ARRANGEMENT FOR A BURNER

Abstract: Arrangement for a fuel burner (1) containing a component part in which provision is made for pre-heating of the fuel to take place. The arrangement is simple and permits effective pre-heating to take place together with regulation of the fuel supply to the arrangement. A supply channel (13, 7, 8) for the supply of fuel to the burner (1) extends along the under surface (10A) of the bowl (11) or similarly arranged container which is so arranged as to be capable of transmitting heat to said channel (13) for the purpose of achieving pre-heating of the fuel.

Description: Arrangement for a burner. The present invention relates to an arrangement for a fuel burner containing a component part in which provision is made for pre—heating of the fuel to take place, and which contains a connecting channel for the supply of fuel to the burner extending along the under side of a bowl or a similarly arranged container which is so arranged as to be capable of transmi ting heat to said channel for the purpose of achieving pre—heating of the fuel. The principal object of the present invention is primarily to make available an arrangement of the kind indicated bove which, in addition to permitting the effective pre— eating of the intended fuel, is also simple and reliable with regard to its construction and operation- Said object is achieved by means of an arrangement in accordance with the present invention, which is characterized essentially in that a burner nozzle is accommodated by a burner component so arranged as to exhibit an essentially U—shaped side profile, in conjunction with which the supply channel extends ■■ nside each leg in a direction both towards and away from a nozzle spraying in the direction of spraying of the fuel, said nozzle being arranged in a space between said legs, said space forming an air supply space. The invention is described below as a preferred illustrative embodiment, in conjunction with which reference is made to the accompanying drawings, in which: Fig. 1 shows a side view of a burner arrangement executed in accordance with the invention; Fig. 2 shows a section along the line II—II through the burner arrangement; Fig. 3 shows a further side view of the burner arrangement; Fig. 4 shows a section along the line IV—IV through the burner arrangement; and Fig. 5 shows a nozzle cleaning device contained in the arrangement and a regulating component intended for the actuation of the cleaning device. rø ORIGINAL A burner 1, as proposed in accordance with the present invention and illustrated in the drawings, comprises a burner body component 2, which can be manufactured by the hot pressing technique and which can exhibit an essentially U-shaped side profile, as shown in Fig. 3, with a burner nozzle 3 accommodated in a space 4 formed between the two legs 5 and 6 of said component. A connecting channel 7 and 8 arranged for the supply of fuel to the nozzle 3 of said burner extends for this purpose internally within each of said legs 5, 6 from an inlet 9 for combustible liquid fuel, preferably such as paraffin, discharging at said component 2, and up to the under side 10A of a component 10 in a bowl 11 or similar container situated above the burner nozzle 3, and down from the bowl 11 to the burner nozzle 3. Said component 10 may consist either of a separate component or of a component integrated with the bowl 11, and preferably exhibits an arched form in the upward sense. The two connecting channels 7, 8, which are thus preferably arranged diametrically oppposed to one another and are so arranged as to extend both towards and against the direction 12 of spraying of the fuel in the burner in question, said fuel being sprayed from the nozzle 3, are so arranged on the under side 10A of the bowl 11 as to be connected to one another via a fuel vaporization space 13, which is preferably annular in form and suitably exhibits a greater cross—sectional area than that exhibited by said connecting channels 7, 8. The burner 1 also suitably contains a tube—shaped component 14, which can be integrated with the body component 2, and which extends in such a way as to be capable of surrounding with its inner space 15 the main burner flame 12 in question. A grid cover 16 provided with openings, which, as shown in the drawings, may have the form of a tube closed at one end, extends from a level which is higher than the level of the upper end 14A of said tube 14 and down as far as the area of the bottom component 10 of the pre—heating bowl 11, around said fuel vaporization spaced at the upper side 10B of the component 10. The laterally facing generated surface 17A of the cover may exhibit around its circumference a number of openings 19 extending through its walls 17 from the inner cavity 18 of the cover and to the surroundings. Said openings 19 are intended, amongst other things, to be capable of distributing fuel spraying from the nozzle 3 in the form of a number of smaller quantities of fuel acting through the openings 19. The cover 16 exhibits at the top a covering cap 20, which is s i tuated in the area above the outlet 21 from the tube 14, and with which the main fuel flow is so arranged as to make contact and to be deflected towards the burner bowl 11, before the fuel is fed through the main openings 19. Ignition of the burner 1 takes place at the time of starting up by lighting methylated spirits or some other suitable pre—heating medium preferably in the form of a paste contained in a bowl 40 beneath the burner 1. Once the pre— eating medium has burned away completely, the burner 1 will have become sufficiently hot for starting up. It is then appropriate for fuel to begin to be sprayed via the inlet 9 and onwards through the inlet channel 7, 13, 8 for the purpose of supplying it to the burner nozzle 3. As a result of the vaporization of the fuel, which is initiated essentially inside the space 13, partly by the volume of said space 13 and partly by the fact that heat has been transferred from the burning methylated spirit in the bowl 40 to the burner 1, the bottom part 10 of which, like the bowl 11, can be attached by brazing to the tube 14 and to the body 2, it is possible to achieve an even and effective fuel supply. When pre—heated fuel, which is fed via the nozzle 3 together with air mixed inside the space 4 at the correct mixing ratio, reaches the internal space 18 of the cover 16 on the outside of an inner cover 41 equipped at least with the tube 14, said fuel mixture will be ignited after having been fed through the openings 19 in the cover. The continued supply of fuel to the nozzle 3 of the burner will result in the fuel which is fed through the inlet channel 7, 13, 8 being pre—heated effectively there thanks, amongst other things, to the thermal transmission via the material of the burner bowl 11, which forms flames which pass M". O øtN . through the openings 19 as they come into contact with same, to the bowl component 10 and onwards into the space 13. It is thus possible for the vaporization of the fuel which is supplied to the burner 1 to function effectively in a continuous fashion. The inlet is formed with one section in an area in the vicinity of the nozzle 3, with an opening 22 so arranged as to be capable of accommodating a preferably manually actuated egulating component 23, preferably an elongated component of the kind illustrated in Fig. 5 which exhibits along a part 23A a number of splines 24 extending along the component 23 in a direction from an actuating adjuster 25 towards the other end 23B of the component. Other similar, for example undulating elements moving relative to an opening, for example, may be so arranged as to extend along the passageway 22. Pre—heated fuel, preferably in vaporized form, is so arranged as to be fed from the channel 8 between said splines 24, etc., and, for example, an inner generated surface 22A of the opening 22 functioning as a surroundable receiving component, in the direction of the burner nozzle 3. Said splines 24 are so arranged as to be capable of interacting with matching depressions 26 and/or projections 27 so arranged as to extend across the longitudinal sense of a cleaning device 28 executed preferably as a spool—shaped body. The device 28 is able for this purpose to be accommodated inside a space 29 which leads to the nozzle, with an elongated cleaning component 30 in said device 28 being so arranged as to be introduced into a tapering fuel supply passageway 31 in the nozzle 3. A cone—shaped part 32, which is so arranged as to be capable of interacting with a similar part 33 of the nozzle 3, enables the fuel supply through the nozzle 3 to be regulated through its interaction. The operation of the cleaning device 28 for cleaning and/or for regulation of the fuel supply is permitted by the fact that said devices are so arranged as to interact with one another in the manner of a so—called worm gear, whereby actuation of the regulating component 23 by turning will produce movement of the cleaning device 28 in the direction of the arrows 34 and 35 ever the longitudinal extent of the regulating component 23. The burner 1, as shown in the drawings, can

Claims: P a t e n t C l a i m s 1. Arrangement for a fuel burner (1) containing a component part in which provision is made for pre—heating of the fuel to take place, and which contains a connecting channel (13, 7, 8) for the supply of fuel to the burner (1) extending along the under side (10A) of a bowl (11) or similarly arranged container which is so arranged as to be capable of transmitting heat to said channel (13) for the purpose of achieving pre—heating of the fuel, c h a r a c t e r i z e d in that a burner nozzle (3) is accommodated by a burner component (2) so arranged as to exhibit an essentially U—shaped side profile, in conjunction with which the supply channel (7, 8) extends inside each leg (5, 6) in a direction both towards and away from a nozzle (3) spraying in the direction of spraying (12) of the fuel, said nozzle (3) being arranged in a space (4) between said legs, said space (4) forππng an air supply space. 2. Arrangement according to Patent Claim 1, c h a r a c t e r i z e d in that the pre—heating bowl (11) is positioned in the area of a grid cover (16) arranged for the transfer of heat from the burner flame (12) to the bowl (11). 3. Arrangement according to Patent Claim 2, c h a r a c t e r i z e d in that the grid cover (16), which exhibits along its laterally facing generated surface (17A) a number of openings (19) intended to receive the supplied fuel for ignition and which exhibits at the top a covering cap (20) extending down into the area of the bottom (10B) of the bowl (11) around a preferably annular fuel vaporization space (13) serving as a supply channel. 4. Arrangement according to Patent Claim 3, c h a r a c t e r i z e d in that a tube (14) surrounds the fuel supply nozzle (3) of the burner and extends up towards the covering cap (20) of the grid cover. 5. Arrangement according to any of the preceding Patent Claims, c h a r a c t e r i z e d in that one section of the supply channel is formed inside the space between two component parts (22A, 23) which move relative to one another and which are situated next to a passageway (22) leading to the burner nozzle. 6. Arrangement according to Patent Claim 5, c h a r a c t e r i z e d in that one component part (23) is constituted by a regulating component (23) capable of interacting with a nozzle cleaning device (28), and in that the other component part (22A) is constituted by a receiving component (22A) capable of being enclosed by said component part (23). 7. Arrangement according to Patent Claim 6, c h a r a c t e r i z e d in that fuel is so arranged as to be conducted via splines (24) or similar along undulating elements extending along the passage in the direction of the burner nozzle (3). 8. Arrangement according to Patent Claim 7, c h a r a c t e r i z e d in that the splines (24) are so arranged as to interact with matching depressions (26) and/or projections (27) in the cleaning device (28), and in that the regulating component (23) and the cleaning device (28) are so arranged as to be capable of interacting with one another in the manner of a so—called worm gear, whereby actuation of the regulating component (23) will produce movement of the cleaning device (28) over the longitudinal extent of the regulating component (23). 9. Arrangement according to any of the preceding Patent Claims, c h a r a c t e r i z e d in that a throttle tube (42) or some other means of adjusting the air supply to the air space (4) is present.

Inventors: WITIKAINEN MATTI, WITIKAINEN, MATTI
Applicants: OPTIMUS AB, AB OPTIMUS
Application year: 1985
Main classification: F23D5
IPC codes: F23D11