US1337498A - Starting device for burners - Google Patents

Description

J. ALSBERG. STARTING DEVJCE FOR BURNEBS. APPLICATION FILED JAN. 2a, 1918.

Apr. 2% MZQL lNVENTOR BY @waab Q 4; ATTORNEY JULIUS ALSBERG, OF CHICAGO, ILLINOIS.

STARTING DEVICE FOR BURNERS.

Specification of Letters Patent.

Patented Apr. 20, 1920.

Application filed January 28, 1918. Serial No. 214,109.

To all whom it may concern Be it known that I, JULIUS ALSBERG, a citizen of the United States, residing at Chicago, Cook county, in the State of Illinois, have invented certain new and useful Improvements in Starting Devices for Burners, of which the following is a full,

clear, and exact specification.

This invention relates to improvements in starting devices for burners utilizing hydrocarbon fuel, and has forits object to provide a starting device which is simple in its construction and operation.

Further, the invention has for its object to provide a device of this character which may be started without it being necessary to initially heat the same by extraneous means.

Further, the invention has for its object to provide a device of this character which may be started quickly and which will heat rapidly the fuel within the vaporizer of the burner. Further, the invention has for its object to provide a device of this character which will serve to heat the water within the boiler during the time that it is vaporizing the fuel in the vaporizer of the burner, whereby the desired steam pressure within the boiler will be attained within a short time after the burner is started.

Further, the invention has for its object to provide a device of this character adapted to produce a blue flame at all times.

Further, the invention has for its object to provide a device of this character comprising an atomizer nozzle and means to supply air and fuel thereto :in the proper proportions to insure that at .all times the combustible mixture will burn with a blue flame.

Other objects will in part be obvious and in part be pointed out hereinafter;

To the attainment of the aforesaid objects and ends my invention consists in the novel details of construction, and in the combination, connection and arrangement of parts hereinafter more fully described and then pointed out in the claim.

In the accompanying drawing there is shown in a schematic view a burner and its cooperating parts having operatively associated therewith one form of starting device constructed according to and embodying the invention.

Referring to the drawings, 10 indicates a boiler of any suitable construction, beneath which are positioned a main burner 11 and a pilot burner 12, each of which may be of any approved type. Positioned above the main burner 11 and the pilot burner 12 is a vaporizing tube 13, having one of its ends connected to the nozzle of the main burnerll and having its other end connected by a pipe 14 with an auxiliary fuel tank 15 containing fuel under pressure. A vaporizing tube 16, located above the pilot burner 12, has one of its ends connected to the nozzle of the pilot burner 12 and its other end connected by a pipe 17 with the fuel tank 15. A main fuel tank 18, containing fuel. under atmospheric pressure, is connected to the auxiliary fuel tank 15 by a pipe 19 in which a pump 20, of any approved type, is interposed, by means of which fuel may be pumped from the main tank 18 to the auxiliary tank 15. The pump 20 -may be driven directly by the engine, or from the rear axle of the automobile, by suitable gearing. The parts thus far described are old and we1l-known in the art.

The starting device comprises an atomizer nozzle 23 having a fuel duct 24 and an air duct 25, which,in the embodiment of 'the invention shown, is of annular form and surrounds the fuel duct '24. A needle valve 26 is provided for opening or closing the outlet opening of the fuel duct 24 in order to control and regulate the amount of fuel flowing therethrough. The fuel duct 24 of the atomizer nozzle 23 is connected to the main fuel tank 18 by a pipe 27 through which fuel from the main tank 18 is fed by gravity to the atomizer nozzle 23.

A constant level fuel chamber 28 is preferably interposed between the ends of the pipe 27 in order to insure a more constant flow of fuel to the fuel duct 24 of the atomizer nozzle 28. The fuel chamber 28 contains a float-actuated valve 29 which controls the flow of fuel from the main tank 18 to the chamber 28 in a manner similar to that in which the float-operated valve of a carbureter controls the flow of fuel thereto.

The air duct 25 of the atomizer nozzle 23 is connected by a pipe 30 with a tank 31, containing compressed air, and, in turn, connected by a pipe 32 with an air compressor 33, adapted to be driven from the engine or from the rear axle ofthe automobile in any suitable manner.

Valves 34 and 35 are positioned within the pipes 27 and 30, respectively, in order to control the flow of fuel and air to the atomizer-nozzle 23.

As the air under pressure issues from the I air duct of the atomizer-nozzle 23 it creates a sucln'ng or aspirating action as a result of. which fuel is drawn through the fuel duct 24. As the fuel in the tank 18 is not under pressure other than the pressure of the atmosphere, which is constant, the amount of fuel drawn through the fuel duct 24 is always proportional to the amount of air discharged from the air duct 25, and, consequently, if the needlevalve 26 is once adjusted to insure the proper flow of fuel to producea blue flame, no further adjustment constant, a reducing valve 36, of any approved type, is interposed in the pipe 30 between the compressed air tank 31and the atomizer-nozzle 23. The valve 36 may be readily adjusted to cause the air to be delivered into the air duct 25 at any desired pressure, which pressure will remain constant and uniform for such adjustment of the valve 36.

The atomizer-nozzle 23 communicates with the inlet end of an air induction tube 31located between the main burner 11 and the boiler 10 and so positioned that the flame issuing from the outlet end thereof will serve to heat the vaporizing tubes 13 and .16 and also the-water within the boiler 10.

The atomized mixture of fuel and air issuing from the air induction tube 37 is ignited by means of a spark plug 38 electrically connected to any suitable source of supply of electricity. As shown, the spark plug 38 is connected by conductors 39 and 40 to the secondary winding of an induction coil 40' the primary winding of which is connected to a storage battery 41. The storage battery 41 may becharged from a dynamo 42, driven by the engine or the rear axle of the automobile, connected to the storage battery 41 by conductors 43 and 44. The electric circuit for the spark plug 38 is controlled by a suitable switch 45, the opening and closing of which may be automatically controlled by the movement of the valves 34 and 35, which are connected to move simultaneously.

In operation, to get up steam in order to operate the automobile, the valves 34 and 35 are opened thereby permitting fuel and air to flow from the tanks 18 and 31, re-

spectively, to the atomizer-nozzle 23, it being understood that the needle valve 26 has been adjusted to insure the producing of a blue flame, as above described. The opening movement of the combined valve 34, 35 will actuate the switch 45 to close the circuit of the spark plug 38, as a result of which the atomized mixture of fuel and air issuing from the air induction tube 37 will be instantly ignited. At this point attention is called to the fact that pre-heating of the fuel, supplied to the atomizer-nozzle 23 of the starting device, by means of an acetylene torch or other extraneous means, is unnecessary, whereby a saving of time and labor is effected. The flame, caused by the combustion of the atomized mixture of air and fuel, gives a very intense heat, as a result of which the fuel in the vaporizing tubes 13 and 16 is vaporized very quickly thus permitting the main burner 11, or the pilot burner 12 to be employed within a very short time after the starting device has been put in operation. Owing. to the intense heat of the flame from the atomizer-nozzle 23, it will during the time that the fuel within the vaporizing tubes 13 and 16 is being vaporized thereby, heat the water within the boiler 10 to an extent such that the desired steam pressure within the boiler will be attained very quickly after the main burner 11 is started. By reason of this feature a great saving of time in getting up steam is effected in comparison with the present systems in which the heating of the water within the boiler to produce steam is effected entirely by means of the main burnen As soon as one or the other of the burners 11 or 12 has been started, 13S hereinbefore described, the valves 34 and 35 are closed, thus shutting off the flow of fuel and air to the atomizer-nozzle 23, whereupon the switch 45 is returned to its normally open position to break the circuit of the spark plug 38.

Having thus described my said invention what I claim anddesire to secure by Letters Patent is v In an apparatus of the character described, the combination with a boiler of a bu ner, a vaporizer positioned intermediate said boiler and said burner and communicating with the latter, means for supplying fuel under pressure to said vaporizer, an atomizer operatively associated with said vaporizer comprising an air duct and a fuel duct, means for supplying air under pressure to said air duct, and means for supplying fuel under atmospheric pressure to said fuel duct, substantially as specified.

Signed at the city of Chicago, Cook county, in the State of Illinois, this 27th day of December, one thousand nine hundred and seventeen.

JULIUS ALSBERG. Witnesses:

EDWARD KEAND, FLORENCE WEssELL.

Images