1934-06-14

Abstract of GB411626 411,626. Subaqueous burners. WINCKLER, G., 18, Humboldtstrasse, Dortmund, Germany. March 17, 1933, No. 8108. Convention date, March 18, 1932. [Class 75 (i).] In a subaqueous cutting or welding burner, liquid fuel is vaporized by heat from the flame of the burner transmitted to the fuel by means of a heat return member. The flame is emitted through an opening in the nozzle l, which acts as a baffle so that the copper member o becomes heated and transmits heat to the body a. The fuel enters the burner through a pipe g, and passes through a passage b in the body a, in which vaporization takes place, and through ducts p into the space between the nozzles d, f, where it mixes with heating oxygen admitted through a pipe h and bore h<1>. The passage b is formed by grooves on the body a and closed on the outside by the sleeve c, and may comprise narrow longitudinal slots connected so as to form a zig-zag passage. Alternatively, a number of passages b and bores h<1> may be provided. The mixing chamber may be provided with baffles, e.g. by providing on the nozzle d spirally arranged annular projections or a number of rings with flattened parts. The cutting oxygen, which is supplied through the pipe h and nozzle d, is heated-insulated from the outer wall of the latter by a member e of porcelain, or like material, constructed so as to form a space r between it and the outer wall of the nozzle r. The heating effect of the member o is regulable by altering the internal shape of the nozzle l or adjusting the nozzle l axially. The cover m may carry valves for the supply pipes. Preheated oxygen may be used. In starting the burner, the valves for fuel and heating oxygen only are opened.

0

1934-06-14

F23D21/00 ; F23D21/00

F23D21/00B

GB19330008108 19330317

DEX411626 19320318

1	Improvements in or relating to vaporised fuel burners
	Inventor:	Applicant: GUSTAV WINCKLER
	EC:F23D21/00B	IPC: F23D21/00;F23D21/00
	Publication info: GB411626 A - 1934-06-14

claim is:-

1 A method of gasifying liquid fuel in 100 side an under water cutting or welding burner, characterised in that the heat of the flame of the burner is transmitted to the fuel to be gasified by means of a heat return member 105 2 A method according to claim 1, characterised in that the heat of the flame of the burner is utilised for gasifying the liquid fuel by letting the flame burn into a nozzle-like member forming a hollow 11 i space.

3 A method according to any of claims 1 or 2, characterised in that preheated oxygen is employed.

4 A burner for the method according 115 to any of claims 1 to 3, characterised in that the flame is dammed up or throttled towards the front, thereby heating a heat returning member arranged around a -heating member serving for heating or 120 gasifying the fuel, the said heat returning member delivering the heat to the heating member carrving the fuel.

f 5 A burner according to claim 4 characterised in that a regulation of the in 125 tensity of heating is effected by changing the inner form of the flame damming nozzle or displacing the nozzle axially 6 A burner according to claim 4 characterised in that the outer wall of the cut i 30 411,626 g oxygen nozzle is heat insulated from the cutting oxygen.

7 A burner according to claim 6 characterised in that the cutting oxygen nozzle % is provided with a heat insulating memher forming a passage for the cutting oxygen.

8 The method of gasifying liquid fuel inside a burner substantially as set forth.

9 A burner substantially as described UJ with reference to the accompanying drawing, Dated the 17th day of March, 1933.

A A, THORNTON, Chartered Patent A ent, 7, Essex Street, Strand, Lonu on, W 2, For the Applicant.

Redhill: Printed for His Majesty's Stationery Office, by Love & Malcomson, Ltd -1934.

PATENT SPECIFICATION

1 Convention Date (Gernomny): March 18, 1932 411,626 Application Date (in United Kingdon): March 17, 1933.

Complete Accepted: June 14 d 1934.

No 8108/33.

COMPLETE SP:ECIFICATION.

Imnprovemrents in o T relating to Vaporised Fuel Burners.

I, GUSTAV WINCXLER, a German citizen, of Humboldtstrasse 18, Dortmund, Germany, do hereby declare the nature of this invention and in what manner the same is to be performed, to -be particularly described and ascertained in and by the following statement:-

This invention relates to the gasification of liquid fuel inside under water cuto ting and welding burners.

In under-water cutting burners for liquid fuel, such as benzine, benzol and the like, gasification of the fuel by electric resistance heating is well known, but i S the accommodation of this heating device requires conlsiderable overall length of the burner and thus renders cutting almost -impossible at points that are not readily accessible.

Heating of the gasifying chamber in such burners requires a source of electric current, such as a dyn Chio driven by a motor, or current must be supplied from a neighbouring source of distribution by overhead wires or -cables Both these types of current supply are expensive, even the latter, for it must be taken into consideration that the place of operation may be located in the middle of a river and current can then be supplied from the banks only by means of waterproof or overhead cables the installation of which is expensive and occupies a good deal of time, so that the costs involved, especially in case of small undertakings, is out of proportion to the cost of under-water -cutting itself.

The manufacture of electrically heated under-water tutting burners is highly complicated and expensite, particularly as the heating space of the burlier has to be protected against the entrance of water, which is a difficult task owing to the heating and expansion of the burner The heating space is therefore placed under pressure with nitrbg'en to prevent water from entering, b-ut this arrangement requires an additional pipe line bringing the total up to five supply lines serving, respectively, for current, nitrogen, fuel, heating and cutting oxygen.

All these disadvantages are elimninated in the burner according to the present inl-price 11-1 vention which consists of a method of gasifying liquid fuel inside an under 55 water cutting or welding burner, characterised in that the heat of the flame of the burner is transmitted to the fuel to be gasified -by means of a heat return member The overall length of the burner 60 according to the present invention amounts to only approximately one-half of that of the known burners, so that cutting can be carried out in confined spaces and on objects which are not readily 65 accessible Gasification of the fuel is efiected by the flame of the burner without resorting to auxiliary heating as is necessary for example, in blow lamps the front portion of which must first be 70 heated by an auxiliary flame before the normal oasification of the fuel takes place.

The manufacture of the new burner has been considerably simplified and thus cheapened The supplying means for 75 nitrogen and current have been dispensed with, so that the new burner requires only three pipe lines for supplying fuel, heating oxygen, and cutting oxygen respectively Owing to the reduction in the 80 number of supply lines from five to three, the work of the diver is considerably facilitated, in addition to the saving in pipe lines and supply members.

In order that the invention may be 85 more clearly understood one particular construction of the burner made in accord ance therewith for autogenous cutting inder water will now be described with reference to the accompanying drawing 90 which is a longitudinal section thereof.

Referring to the drawing, a is a heater element which is provided with a fuel duet b, and is covered b a sleeve e_ d is the cutting nozzle with a built-in insu 95 lating member e / is the heating nozzle, g the fuel supply pipe, h I the supply pipe for heating oxygen 5 i the supply pipe for cutting oxygen, k a double-walled insulating housing, 1 a flame damming nozzle 100 or baffle member, ern a closing member or cover, nm a heating chamber, and o a heat returning member.

Liquid fuel, such as benzol, benzine, -Oil, petroleu Lm or the like; supplied under j 05 pressure enters the heater element a S' I rlll_ 1 .-g 2 411,626 through the fuel supply pipe g and the bore g' and is gasified in'the duct b by.

means of heat accumulated in the heating chamber N and returned by the member o from the cutting flame The duct b is formed by grooves or slots cut in the outer circumference of the heating body a and closed on the outside by the sleeve c, said duct b consisting for example, of narrow axially extending slots connected in such a manner as to form a continuous zig-zag shaped passage for the fuel around the circumference of said heating body a In this way the fuel is subjected to the heat i 5 -of the body a for a sufficient length of time to ensure gasification The heated or gasified fuel, after passing through the said duct b, enters the space between the heating nozzle f and the cutting nozzle d through the channel p so as to mix with the oxygen supplied by the pipe h and bore A 1 Thorough mixing of the fuel and oxygen is insured by means of baffles and change of direction of the mixture in the space between the cutting nozzle d and heating nozzle f The change of direction of the mixture in the space between the cutting and heating nozzles d and f may be effected, for example, by providing the cutting nozzle d on its outer circumference with spirally arranged annular projections between which the gasified fuel and the oxygen entering through the bore hi is forced, so as to flow spirally around the nozzle and thereby become intimately mixed The same effect can also be produced by arranging a number of rings on the nozzle d, each ring being flattened at one point to form fi a passage for the mixture The mixing of the fuel and oxygen may be effected also prior to entering the heater member a, or the fuel and heating oxygen may be separately introduced into the heating nozzle j from several ducts b and bores h' respectively.

:First heating of the burner takes place without auxiliary flame, the valves for fuel and heating oxygen being only slightly opened and the atomized fuel mixed with oxygen and ignited After -a short time both valves may be opened farther, as perfect gasification has taken place, and the heating flame may be adjusted The complete and uninterrupted gasification necessary for working is effected by means of the heat of the cuting flame which is transmitted to the return member o by the nozzle or baffle member 1, which may be of any desired shape To prevent cooling of the cutting nozzle d, by the cutting oxygen passing through it said cutting nozzle is provided with a built-in insulating member e forming a passage for the cutting oxygen and consisting for example of, porcelain or a similar non-combustible material Furthermore, the built-in insulating member c may be so constructed as to form a space r between it and the outer wall of the 7 w& nozzle d as shown in the example illustrated It is further possible to use preheated oxygen, which of course renders the operation more expensive.

The double-walled insulating housing k 75 which prevents the surrounding water from cooling the burner also carries the -heat baffle member I which divides Able flame into two parts, the main portion passing through the opening in the baffle 80 member A, while the remainder thereof is dammed up and back and heats the copper heat return member o or the heating chamber N the heating of which can be regulated by the inner construction of the 85 heat baffle member 1, or by axial adjus tment of the said baffle member 1.

The burner is shut off watertight on the side where the supply members are located by a closing member or cover m, which 9 G may also be constructed as a body for carrying closing valves for the supply pipes, whereby short overall length is insured.

Having now particularly described 95 and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I