Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
  • F23D—BURNERS
  • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
  • F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
  • F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
  • F23D14/24—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other at least one of the fluids being submitted to a swirling motion
• • 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 
  • F23C7/00—Combustion apparatus characterised by arrangements for air supply
  • F23C7/002—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion
  • F23C7/004—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion using vanes
  • F23C7/006—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion using vanes adjustable
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
  • F23D—BURNERS
  • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
  • F23D14/46—Details, e.g. noise reduction means
  • F23D14/48—Nozzles
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
  • F23D—BURNERS
  • F23D2203/00—Gaseous fuel burners
  • F23D2203/10—Flame diffusing means
  • F23D2203/101—Flame diffusing means characterised by surface shape
  • F23D2203/1017—Flame diffusing means characterised by surface shape curved
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
  • F23D—BURNERS
  • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
  • F23D2900/11402—Airflow diaphragms at burner nozzle
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
  • F23D—BURNERS
  • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
  • F23D2900/14—Special features of gas burners
  • F23D2900/14481—Burner nozzles incorporating flow adjusting means

Definitions

• the present invention relates to a burner usable in both the industrial and civil field.
• Burners are used e.g. in the ceramic industry, inside the equipment for the heat treatment of ceramic products, such as kilns and dryers.
• the burners of known type are generally made of a supporting body, defining an air supply duct and a combustion gas supply duct, and of a combustion head through which the above-mentioned ducts are placed in coimnunication with a combustion area.
• the combustion head in turn comprises an air diffuser, which has a plurality of openings communicating with the air supply duct to direct same towards the combustion area, and gas dispensing means, which have a plurality of transit gaps communicating with the gas supply duct to convey same towards the combustion area.
• the diffuser of the combustion head generally consists of a plate-shaped element having a circular conformation, which is fitted around the gas supply duct and the entire thickness of which is crossed by the above openings.
• the diffuser generally has a plurality of circular through holes, arranged along at least a circumference and having respective axes inclined so as to converge towards the extension of the longitudinal axis of the gas supply duct along the combustion area.
• the diffuser also envisages a plurality of cuts obtained on its periphery according to planes inclined with respect to the longitudinal axis so as to give the air passing through it a helical movement.
• the dispensing means of the burners of known type in turn have a plurality of gaps, radially directed and distributed along a circumference, to allow the combustion fluid to come out.
• the only way of intervening on the flow rate of combustion fluid in the burners of known type is to operate an adjusting valve located upstream of the burners themselves. It follows, therefore, that the adjustment limits are those set by the valve itself inasmuch as the burner plays no role whatsoever in such a phase.
• burners of known type ensure flame stability with gas flow rates close to the minimum or maximum values.
• burners are unable to adapt in a flexible way to the specific requirements of the case, meaning they do not permit an effective and prompt adjustment of flame intensity according to load conditions. This means that, e.g., in the event of the flame produced by the burner being unable to satisfy the necessary heat requirements, the burner has to be replaced with another of different size. In the same way, to heat environments of different conformation or size, burners of different type must be used. All this inevitably translates into an increase in investment costs, and into more complex stock management and maintenance jobs.
• the main aim of the present invention is to provide a burner which permits adjusting the flow rate of the combustion fluid, and therefore the dispensed output, irrespective of the operating conditions of the adjustment means outside the burner and positioned upstream of same.
• one object of the present invention is to provide a burner that is flexible to use and which allows making a broad range of combustion fluid flow rate adjustments. More in particular, with respect to burners of known type, the present invention proposes to improve operation both during maximum peaks and during production gaps.
• Another object of the present invention consists in obtaining an effective mix of air and combustion gas, while at the same time ensuring high flame stability at both low and high gas flow rates.
• the present invention also proposes to provide a burner which allows easily adjusting the geometry of the flame according to the specific requirements of the case.
• Yet another object is to provide a burner which permits optimizing consumption with respect to burners of known type.
• Not the last object of the present invention is to reduce, with respect to burners of known type, the maintenance jobs required to restore the correct operation of the diffuser and therefore substantially maintain the performance of the burner itself unaltered over time.
• Another object of the present invention is to provide a burner that allows to overcome the mentioned drawbacks of the background art in the ambit of a simple, rational, easy, effective to use and low cost solution.
• the present burner comprising:
• a combustion head associated with said supporting body and comprising diffusing means, communicating with said first duct and having a plurality of through openings for the transit of the combustive fluid towards a combustion area, and dispensing means of the combustion fluid, communicating with said second duct and having a plurality of gaps for the transit of the combustion fluid itself towards said combustion area; characterized by the fact that said dispensing means comprise at least a fixed portion and a mobile portion, where one of said fixed portion and said mobile portion defines said transit gaps that are communicating with at least one dispensing channel delimited by at least two opposite surfaces defined by said fixed portion and by said mobile portion respectively, the position of said mobile portion with respect to said fixed portion being adjustable to change the section of said dispensing channel.
• figure 1 is an axonometric view of a burner according to the invention
• figure 2 is an enlargement of the combustion head of the burner in figure 1 ;
• figure 3 is a simplified view of the combustion head shown in figure 2;
• figure 4 is a longitudinal section view of the burner in figure 1 ;
• figure 5 is an enlargement of a detail of the cross-section in figure 4.
• figure 6 is an axonometric view of the dispensing means of the combustion fluid in a first embodiment
• figure 7 is a cross-section of the dispensing means in figure 6;
• figure 8 is an axonometric view of the dispensing means of the combustion fluid in a second embodiment
• figure 9 is a cross-section of the dispensing means in figure 8.
• figure 10 is an axonometric view of the dispensing means of the combustion fluid in a third embodiment
• figure 1 1 is a cross-section of the dispensing means in figure 10;
• figure 12 is a front view of the internal diffusing element
• figure 13 is a front view of the intermediate diffusing element
• figure 14 is a front view of the external diffusing element.
• the burner 1 comprises a supporting body 2 which defines at least a first duct 3 for the supply of a combustive fluid and at least a second duct 4 for the supply of a combustion fluid.
• the supporting body 2 comprises a first tubular element 2a defining the first duct 3 and a second tubular element 2b defining the second duct 4.
• tubular used here is meant any internally hollow element, irrespective of the shape of its cross-section, which can be any.
• the second tubular element 2b is positioned inside the first tubular element 2a. More in particular, the first duct 3 is therefore laterally delimited by the first and by the second tubular elements 2a and 2b, while the second duct 4 is laterally delimited only by the second tubular element 2b. In the embodiment shown in the illustrations, the first duct 3 therefore extends around the second duct 4.
• tubular elements 2a and 2b are substantially concentric the one with the other.
• the longitudinal axis of the first and of the second tubular elements 2a and 2b is identified in the illustrations by the reference letter A.
• the first and the second ducts 3 and 4 have a first mouth 5 for the entry of the combustive fluid and a second mouth 6 for the entry of the combustion fluid respectively.
• the supporting body 2 also defines an inlet chamber 7 communicating with the first duct 3 by means of the first mouth 5 and having an inlet mouth 8 for the combustion fluid cormectable to a ventilation system for blowing the combustive fluid, generally consisting of air.
• the inlet chamber 7 is also arranged around the second tubular element 2b.
• the inlet chamber 7 has a plurality of conveying channels 40 for conveying the combustion fluid towards the first duct 3. More in detail, such conveying channels 40 are delimited by a plurality of ribs and are suitable for directing the combustion fluid present in the inlet chamber 7 along a direction substantially parallel to the axis A of the first duct 3.
• the first tubular element 2a and the portion of the supporting body 2 delimiting the inlet chamber 7 can be made in a single piece or can be made separately, as in the embodiment shown in the illustrations.
• the first tubular element 2a has a first extremity delimiting the first mouth 5 and a second extremity, opposite the first, connected to diffusing means 9 of the combustive fluid.
• the first tubular element 2a also defines the external overall dimensions of the supporting body 2, although alternative embodiments cannot be ruled out wherein the supporting body 2 also comprises a covering element of the first tubular element 2a open at one extremity and inside which the combustion head 15 is housed.
• the second tubular element 2b also has a first extremity connected with the second mouth 6 and a second extremity, opposite the first, connected to dispensing means 1 1 of the combustion fluid.
• the second tubular element 2b comprises a union element 12 defining a section of extremity of the second duct 4.
• the second tubular element 2b comprises a main section 13 with which the union element 12 is associated integral.
• the main section 13 and the union element 12 can be made in a single body piece or separately as shown in the illustrations.
• the combustion fluid is preferably in gaseous state such as natural gas.
• a flange 14 suitable for enabling this to be fastened to a supporting structure.
• the burner 1 then also comprises a combustion head 15 associated with the supporting body 2.
• the diffusing means 9 are communicating with the first duct 3 and have at least an opening 16 for the transit of the combustive fluid towards a combustion area 17 arranged downstream of the diffusing means themselves with respect to the air forward movement direction.
• the diffusing means 9 have a plurality of openings 16 for the transit of the combustive fluid.
• the dispensing means 1 1 of the combustion fluid are communicating with the second duct 4 and have at least a gap 18 for the transit of the combustion fluid itself towards the combustion area 17.
• the dispensing means 1 1 are associated with the section of extremity of the second duct 4 defined in the illustrations by the union element 12.
• the dispensing means 1 1 have a plurality of gaps 18 for the transit of the combustion fluid.
• the diffusing means 9 comprise a plurality of diffusing elements 9a,9b,9c having relative openings 16 reciprocally mobile with respect to one another to change the relative position of the openings defined on them. More in detail, at least one of the diffusing elements 9a,9b,9c can be moved with respect to the others to change the reciprocal position of the relative openings 16.
• Each diffusing element 9a,9b,9c therefore has a plurality of openings 16 and by changing the reciprocal position of the diffusing elements 9a,9b,9c, the transit section of the combustive fluid is therefore changed.
• the flow of combustive fluid receives the minimum and the maximum deviation in the condition wherein the openings 16 define the maximum and minimum transit section respectively, following the reciprocal movement of the diffusing elements 9a,9b,9c.
• the deviation of the combustive fluid flow can be adjusted, a lesser deviation corresponding to a greater extension of the flame and vice versa.
• the greater the combustion fluid transit section defined by the openings 16 the greater the maximum conductible flow rate, i.e., the output dispensable by the burner 1.
• the maximum flow rate of air conductible through the diffusing elements 9a,9b,9c the maximum flow rate of gas that can be burned is also increased as is, therefore, the output of the burner 1.
• the openings 16 are defined by respective cuts 19 that extend along a portion of the relative diffusing element 9a,9b,9c starting from its perimeter edge.
• the cuts 19 are defined according to an inclined plane with respect to the plane on which the relevant diffusing element 9a,9b,9c lies.
• the openings 16 have a substantially curvilinear extension and a growing section proceeding towards the peripheral edge of the relevant diffusing element.
• the openings 16 thus shaped are suitable for directing the flow of combustive fluid passing through them with a helical pattern, optimizing the mix with the combustion fluid in the combustion area 17.
• the diffusing elements 9a,9b,9c have a substantially circular shape and the openings 16 are arranged radially on them.
• the diffusing elements 9a,9b,9c are of the plate-shaped type and lie substantially orthogonal to the longitudinal axis of the tubular elements 2a and 2b.
• the diffusing elements 9a,9b,9c have a central through hole 20 by means of which they are fitted around the second tubular element 2b.
• the diffusing elements 9a,9b,9c are fitted around the union element 12.
• the diffusing elements 9a,9b,9c are superimposed on one another and are reciprocally mobile around a relative rotation axis.
• the rotation axis of the diffusing elements 9a,9b,9c substantially coincides with the longitudinal axis A of the tubular elements 2a and 2b.
• At least one of the diffusing elements 9a,9b,9c is fixed.
• the innermost diffusing element 9a i.e., that closest to the first extremity of the first tubular element 2a, is fixed with respect to the supporting body 2.
• the through hole 20 of the fixed diffusing element 9a is not circular but shaped so as to cooperate with the union element 12 to prevent reciprocal rotation.
• the through hole 20 and the union element 12 have a complementary profile, i.e., they both define a pair of opposite rectilinear walls 20a which cooperate with one another to stop the diffusing element 9a in rotation with respect to the second tubular element 2b.
• the diffusing means 9 comprise three diffusing elements 9a,9b,9c superimposed on one another.
• This configuration permits making the reciprocal adjustment of the diffusing elements easier, because the operator must restrict itself to regulating the position of only one of these; alternative embodiments cannot however be ruled out wherein two or more of the diffusing elements 9a,9b,9c are mobile.
• the wall of the second tubular element 2b laterally delimiting the second duct 4 defines at least a locator surface 21 against which one of the diffusing elements 9a,9b,9c rests, in particular the innermost diffusing element 9a. More in detail, the locator surface 21 is defined by the union element 12 around which the diffusing elements 9a,9b,9c are fitted.
• means are provided for locking the reciprocal position of the diffusing elements 9a,9b,9c.
• the locking means correspond to the dispensing means 1 1 , which define a locking surface 22 intended to be rested against one of the diffusing elements 9a,9b,9c on the opposite side with respect to the locator surface 21.
• the locking surface 22 is suitable for cooperating with the outermost diffusing element 9c.
• the position of the dispensing means 1 1 with respect to the extremity section of the second duct 4 with which they are associated and defined in the illustrations by the union element 12, is adjustable so as to press the diffusing elements 9a,9b,9c in between the surfaces 21 and 22 the one against the other in order to prevent their reciprocal movement during use.
• the dispensing means 1 1 are therefore mobile between an adjustment position, wherein they allow the reciprocal movement of the diffusing elements 9a, 9b, 9c, and a locked position, wherein they prevent the reciprocal movement of same.
• the locking surface 22 is moved away from the outermost diffusing element 9c to allow the reciprocal movement of the diffusing elements 9a,9b,9c, while in the locked position, the locking surface 22 cooperates with the outermost diffusing element 9c so as to pack up the diffusing elements themselves thereby reciprocally making them integral.
• the dispensing means 1 1 can be screwed onto the second tubular element 2b in correspondence to its second extremity defined by the union element 12.
• the dispensing means 1 1 are therefore unscrewed to allow the adjustment of the reciprocal position of the diffusing elements 9a,9b,9c, while they are screwed up to make them reciprocally integral during the operation of the burner 1.
• the dispensing means 1 1 comprise at least a fixed portion 1 1 a and a mobile portion 1 1 b, where the position of the latter with respect to the fixed portion 1 la is adjustable.
• the fixed portion 1 1 a and the mobile portion l ib are integral with one another and stopped; in other words, during use, there is no relative movement between the portions 1 1 a and 1 lb, the position of the mobile portion 1 lb being changeable during the phases when the burner 1 is not used.
• the fixed portion 1 la is associated with the second extremity of the second tubular element 2b, defined in the particular embodiment shown in the illustrations by the union element 12.
• the fixed portion 1 la is e.g. screwed onto the union element 12.
• One of the fixed portion 1 1a and the mobile portion l ib defines the gaps 18 communicating with a dispensing channel 23 delimited by at least two opposite surfaces 24a and 24b defined by the fixed portion 1 la and by the mobile portion 1 lb, respectively.
• the opposite surfaces 24a and 24b, and therefore also the dispensing channel 23 defined by them, are arranged transversally to the longitudinal axis A.
• the gaps 18 for the transit of the combustion fluid can be defined indifferently on the fixed portion 1 1 a or on the mobile portion 1 lb.
• the mobile portion 1 lb can be moved between at least a lowered configuration, wherein the opposite surfaces 24a and 24b are moved closer together, and a raised configuration, wherein the opposite surfaces 24a and 24b are moved away from one another with respect to the lowered configuration.
• the transit section, and therefore the flow rate of the combustion fluid is at minimum in the lowered configuration and at maximum in the raised configuration.
• one or more intermediate configurations are provided. It is also easy for the technician in the sector to appreciate how the reciprocal distance of the opposite surfaces 24a and 24b in the extremal configurations can vary according to the chosen embodiment. For example, in the lowered configuration, the opposite surfaces 24a and 24b can be in contact with one another or, alternatively, at a minimum predefined distance.
• the burner 1 comprises means for adjusting the position of the mobile portion 1 lb with respect to the fixed portion 1 la.
• the adjustment of the position of the mobile portion 1 lb can be of the discrete or continuous type.
• the fixed portion 1 la has a seat 25 inside which is inserted the mobile portion l ib.
• the mobile portion l ib is inserted in a removable way inside the seat 25.
• the mobile portion l ib is, e.g., screwed up inside the seat 25 defined on the fixed portion 1 la.
• the adjustment means comprise at least a locator element 28, having a predefined thickness, placed between the fixed portion 1 1a and the mobile portion l ib.
• the seat 25 defines an abutment surface 26 whereby it is suitable for cooperating with a respective counter-abutment surface 27 defined on the mobile portion l ib and between which the locator element 28 is placed.
• the locator element 28 is of the rigid type and its thickness defines the distance between the opposite surfaces 24a and 24b. More in detail, the mobile portion 1 lb is fitted inside the seat 25 until its counter-abutment surface 27 rests on the locator element 28 in turn arranged resting on the abutment surface 26.
• the adjustment of the position of the mobile portion l ib is of the continuous type.
• the mobile portion 1 lb is screwed up inside the seat 25 and safety means 29 are provided suitable for cooperating with the mobile portion itself to prevent its movement away from the fixed portion 1 1 a.
• the safety means 29 comprise, in the embodiment shown in the illustrations, a threaded element 29 which fits through a central threaded through hole, defined on the fixed portion 1 1 a. The bottom extremity of the threaded element 29 is therefore arranged inside the seat 25.
• the mobile portion l ib By turning the mobile portion l ib with respect to the fixed portion 1 1a, the former also moves with respect to the threaded element 29. It therefore follows that the mobile portion l ib can be screwed/unscrewed with respect to the fixed portion 1 la until it reaches the extremities of the thread of the threaded element 29.
• the fixed portion 1 1 a comprises a plurality of channels 30 for the transit of the combustion fluid communicating with the second duct 4 and each defining a respective transit gap 18.
• the channels 30 extend along a direction substantially parallel to the second duct 4, while the gaps 18 are arranged (i.e., lie on a plane) substantially orthogonal to such parallel direction.
• the gaps 18 face onto the surface 24a delimiting the dispensing channel 23.
• the mobile portion l ib has a central channel 31 communicating, through the seat 25, with the second duct 4 and along the peripheral edge of which the gaps 18 are defined.
• the central channel 31 is therefore substantially coaxial with the second duct 4 and the gaps 18 are arranged (i.e., lie on a plane) substantially parallel to the longitudinal axis A.
• the fixed portion 1 1a has a circular surface 32 surrounding the section of the mobile portion l ib on which are defined the gaps 18 and which extends substantially parallel to the longitudinal axis A. More in particular, the circular surface 32 is substantially coaxial with the ducts 3 and 4.
• the fixed portion 1 1a has a plurality of recesses 33, e.g., with a semi-circular shape, angularly distanced the one from the other and arranged substantially parallel to the gaps 18.
• These recesses 33 define the minimum flow rate of the combustion fluid in the configuration corresponding to the smaller transit section of the dispensing channel 23, i.e., wherein the surfaces 24a and 24b are in contact with each other.
• the section of the mobile portion 1 1 b decreases proceeding from the second duct 4 towards the combustion area 17, as shown in the embodiment in the figures from 6 to 9.
• combustion fluid exiting with whirling movement from the diffusing elements 9a, 9b and 9c and the combustion fluid exiting through the dispensing channel 23 transversally to the longitudinal axis A are sucked up towards the combustion area 17 by effect of the variation in section of the mobile portion l ib.
• the burner 1 is also equipped with an ignition electrode 34 and a combustion control sensor 35, both of traditional type and, therefore, not described in detail.
• the ignition electrode 34 and the control sensor 35 are arranged aligned with the longitudinal axis A and are fitted passing through the diffusing elements 9a,9b,9c within respective seats 36, ending up in correspondence to the combustion area 17.
• the operation of the present invention is the following.
• the operator Before igniting the burner 1 , according to the specific requirements of the case, the operator consequently regulates the reciprocal position of the diffusing elements 9a, 9b and 9c and of the mobile portion 1 lb with respect to the fixed portion 1 1a.
• the operator therefore makes the above adjustments according to a series of parameters, including the Kcal/h which the burner 1 has to produce, the size of the environment to be heated and the ideal stoichiometric ratio between air and gas.
• the operator unscrews the fixed portion 1 1a from the union element 12 so as to loosen the compression force acting on the diffusing elements 9a, 9b and 9c and thus allow the adjustment of the angular position of the outennost diffusing element 9c with respect to the fixed diffusing elements 9a and 9b.
• the operator again screws the fixed portion 1 1a up to the union element 12 thus again packing up the diffusing elements 9a, 9b and 9c so as to make them reciprocally integral.
• the operator then also proceeds in the same way as regards the dispensing means 1 1 , i.e., he/she changes the transit section of the dispensing channel 23 by altering the reciprocal position of the fixed portion 1 1 a and of the mobile portion l ib.
• the adjustment procedure of the position of the mobile portion l ib with respect to the fixed portion 1 1 a can be of the discrete or continuous type.
• the operator removes the mobile portion 1 lb from the fixed portion 1 1 a and replaces the intermediate element 28 and fits one of different thickness.
• the operator intervenes on the threaded element 29 and on the mobile portion 1 1 b to change the position of the latter according to what has been described above.
• the burner forming the subject of the present invention thanks to the particular structure of the combustion fluid dispensing means, allows easily and precisely changing the flow rate of such fluid towards the combustion area.
• the burner forming the subject of the present invention also allows easily and practically adjusting the geometry, and therefore the extension, of the flame of the burner itself. This adjustment, which is made simply by altering the reciprocal position of the diffusing elements equipping the combustion head, pemiits adapting, in an extremely flexible way, the operation of the burner itself to the specific requirements of the case. More in particular, the burner forming the subject of the present invention can also be used for different conformations and sizes of the environment to be heated. This is extremely advantageous, e.g., in the ceramic industry, where the same burner can adapt itself to different widths and manage to effectively also heat the tiles in the central area of the kiln itself, thus avoiding the formation of unburnt materials.
• the burner according to the invention thus makes it possible to optimize the heat phases which distinguish the ceramic process, thereby permitting a reduction in the number of firing cycles and, consequently, an increase in production per unit of time.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Combustion Of Fluid Fuel (AREA)

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• 2014
  • 2014-01-09 WO PCT/IB2014/058154 patent/WO2015104584A1/en active Application Filing
  • 2014-01-09 EP EP14705418.3A patent/EP3092442A1/de not_active Withdrawn
  • 2014-01-09 BR BR112016015858A patent/BR112016015858A2/pt not_active Application Discontinuation

Patent Citations (1)

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