US1498101A - Generating burner - Google Patents

Description

June 17, 1924. 1,498,101

J. E. KRESKY GENERATING BURNER Filed Nov. 12 1921 2 Sheets-Sheet 1 WITNESS INVENTOR Jesse f. A re /y.

ATTORNEYS June 17, 1924. 1,498,101

J. E. KRESKY GENERATING BURNER Filed Nov. 12 1921 2 Sheets-Sheet 2 ATTORNEYS Patented June 17, 1924.

PATENT OFFICE.

JESSE E. KR-ESKY, OF PETALUMA, CALIFORNIA.

GENERATING BURNER.

Applicationfiled November 12, 1921.

To all who-m Z1 may concern:

Be it known that l. JESSE E. Kuicskv, a citizen of the linited States, and a resident of letaluma, county of Sonoma, State of California. have invented a new and useful Generating llurnemof which the following is a specification.

This invention relates to that type of burners wherein the heat produced is part1) utilized in the change of liquid fuel into vaporous fuel which is consumed at the burner fuel outlets. I

An object of the invention is to provide a combined burner and generator that can be readily installed in cook stoves, heaters, ranges, furnaces and various apparatus. Another object is to provide for the instal lation of the burner without material alteration and without special construction of the parts of the heating apparatus or stove in which the burner is to be installed. It is an object to provide a burner construction that may be readily embodied in various types, as of oblong, square, oval or circular shape in which .the principle of the invention may be readily incorporated.

An object is to provide a vaporous or gaseous fuel burner having provision to reduce and practically eliminate the tendency of the burner to back-fire during service and in this connection it is an object to provide an intermediate means in the gas chamber of the burner to serve as a baffle or retarding medium to check the flow of the fluid fuel and thus tend to maintain a difference of pressure as between the mixing chamber of the burner and the discharge chamber or chambers of the burner, this battle means further having the function of equalizing the distribution of the fuel throughout the discharge chamber from which th fuel issues at vents provided for that purpose, and to insure better mixture.

Another object is to provide a burner with a mixing tube or chamber of such proportions as to admit an excess of air in proportion to the quantity needed and to provide means that is adjustablewvith respect to the air inlet so as to accurately control the proportion of air as to the vapor issuing from a constricted discharge which delivers unmixed vapor. In this respect: it is an object to provide for adjustment so as to admit the smallest amount of air to secure Serial No. 514.463.

perfect combustion, to reduce or eliminate noise during combustion and to reduce fuel consumption.

A further object is to provide a liquid burner with discharge chambers of elongated form and conforming to the plan outline of the tire box of a given cook stove so as to secure the effective distribution of the tlames toward the contiguous oven'wa'll, toward a water back, when the same is present, and also to obtain an etiicient heating of the top of the stove contiguous to the burner. Another object of the invention is to provide the burner with fuel discharge means which entirely eliminate the milling or cutting of discharge slots in the structural elements of the burner.

The invention possesses other obiects and features of advantage, some of which, with the foregoing, will be made manifest inthe following description of the preferred form of the invention, which is illustrated in the drawings accompanying and forming partof thespecil'ication. It is to be understood that it is not intended to limit the invention to the embodiment shown by the said drawings and description, as variations may be adopted within the scope of the invention as set forth in the claims.

Figure 1 is a perspective looking toward the front end of a typ of the burner as adapted to be arranged in an oblong fire box of a stove, which is not shown.

Fig. 2 is a transverse section on a vertical plane as indicated at line 2-2, of Fig. 1.

Fig. 3 is a longitudinal. central. vertical section through the burner.

Fig. is a perspective. of the vent forming element of one of the discharge chambers of the burner.

Fig. 5 is a perspective of a somewhat modified form of fuel discharge element for use when it isdttsired to obtain a substantially vertical discharge and flame from a burner. v

Fig. 6 is a perspective showing a fragment of the pilot burner.

Fig. 7 is a perspective of a fragment of on of the fuel chambers showing the inserted fuel check and distributing plate.

Fig. 8 is a central longitudinal section, showing on a larger scale. the retort or generator device.

For the purpose of facilitating the description and comprehension of operation of the present burner structure, it is desirable at this point to distinguish between certain of the chambers and parts of the apparatus with respect to the material which is consumed in the burner. The apparatus is especially designed for the consumption of a vaporous or gaseous fuel which will here inafter be referred to as the vapor fuel, this being produced from a liquid stock, such as kerosene, distillate, gasoline, alcohol and suitable other grades of liquid fuel. The liquid fuel is derived from a suitable source which is connected to a portion of the burner which fgrms a retort converting the liquid into a vaporous state and this is discharged from the retort into a mixing chamber where the vapor is rendered combustible, and is then conducted from the mixing chamber with the desired quantity of air to the discharge means providing for the effective distribution of the vapor fuel to obtain the maximum benefits of combustion.

In the illustrated embodiment of the invention, the liquid fuel is supplied to a retort tube or suitable element which is subjected to a sufficient degree of heat to vaporize the liquid and this is caused to flow into a discharge nipple or tip disposed in juxtaposition to the inlet end of a mixing chamber of the burner. Means are provided at the inlet of the mixing chamber for carefully regulating and roportioning the ratio of air and vapor discharging from the nipple so as to secure the proper mixture. From the mixing chamber the now combustible vapor fuel is directed into the burner chambers proper and in these are provided means for checking the'flow of the fuel so as to reduce the ordinary tendency of fluid burners to back-fire. The checking means also forms a distributing means to equalize the issue of the fuel from the burner vents.

Preferably, the invention is embodied in a structure, the several parts of which are each of simple design enabling their construction at small cost and providing also for the ready renewal of such parts as may be worn or broken during service and a firing is prevented, a good mixture obtained sim le form of the burner is shown as clu ing a hollow shell structure, illustrated in this case as of substantialy U-shape form in plan, thus providing two parallel and similar elongated chamber limbs 2, the rear ends of which are cross connected by a common head or manifold 3, from which extends horizontally and centrally between the side chambers 22, a mixing tube or chamber 4, which may be of circular or other cross-sectional form as desired, and which opens freely at its rear end into the head or manifold part 3 of the shell.

Across what may be termed the front end of the burner shell is provided a front plate 6, and in front of this is provided a downwardly extending tube or conduit 8 having a head 9 which is formed with a nipple 10, preferably having a constricted port 11, leading through the plate 6 and discharging into the chamber 1. A finger 12 is pivoted or otherwise secured to the plate and removably holds the head in place. The upper and rear end of the generating tube 8 is connected to the rear end of a retort pipe 14: receiving liquid fuel from any suitable source, as a feed pipe 15, to which it is detachably connected by a union 16.

Means are provided below the initial heating tube 8, to receive a suitable preliminary heating fuel, such as alcohol, gasoline or kerosene, which when ignited by a match, will cause flames to play upon the generator tube 8 and this will therefore become heated to a sufficient degree to vaporize the liquid fuel passing into the tube 8 from the supply.

The generator tube heater consists of a horizontally extending, flat trough 17, which is arranged below the horizontal portion of tube 8 through which the fuel passes. The trough may be provided with a wick or absorbent mass, as of asbestos 18.

Generation of fluid fuel having commenced, the pressure created in the pipe 8 causes the vapor to discharge from the nipple 10, laterally into the open end of the mixing chamber 4. and this is provided with a simple and effective means for regulating the ratio of air to fuel. Such means preferably consists of an adjustable sleeve 20 in the open end of the tube 4 and which is arranged concentric with the line of discharge from the nipple; the chamber 4 being of sufficient size to admit more air than is normally required to provide combustible fuel and by the adjustment of the regulating sleex e 20 toward or from the nipple, the volume of air is controlled. The air and fuel pass into the horizontal mixing chamber 4 and from that the mixture enters the manifold or rear end 3 of the shell and is diverted into the open, parallel, side chambers 22.-

I have found by actual practice that backand that a uniform distribution of the vapor fuel is obtained by the arrangement of a bafile or checking means in the elongated chambers 22. Such baffle means may consist of a horizontal partition or plate 21 arranged in each chamber 2 at a suitable distance above the bottomto provide fol-the relatively free horizontal flow of the fuel. These bafile plates are perforated by a series of apertures 22- through which the fluid fuel passes upwardly into the upper portion of each chamber 2. In effect, the bafiies hold back the fuel from the mixing chamber to a suitable degree and, at the same time form subjacent conduits having the outlets 22 at spaced intervals horizontally through which the fuel passes.

A further feature of the invention consists of means providing for the uniform issue of the vapor fuel from the upstanding burner chambers 2-2 throughout their length and provides for the control of the direction of the discharge of the fuel and the flames of combustion and at the same time said means is of such form as to avoid the ordinary operation of cutting grooves or slots to produce vents or apertures for the escape of the fuel. To that end I provide what may be termed gas release bars or elements which are adapted to be placed upon the top open mouths of the lateral chambers 2. as shown in Fig. 7; the release bars being constructed so as to provide uniformly spaced fuel vents or apertures over the edges of the respective chambers 2, which thus form a built-up structure of burner. A form of bar 23,- is shown in Fig. 4, in which its top and bottom faces are each provided with transversely extending and equally spaced, tooth-like lugs 24;, preferably of slight depth. The bar 23 of Fig. .4. is shown as providing for the up-flow of fuel, as by means of a longitudinal slot at 25, and is adapted to be placed upon the top edges of one of the lateral chambers 2 of the burner shell with the bottom faces of the lower lugs 24 resting on said edges and forming therewith, transversely extending vents or passageways for the fuel from the chamber above the baflie plate 21. The longitudinal slot provides for the ascent of a portion of the fuel through the bar which is covered by a top clamping strip 26, of which there is one for each chamber 2 and through which strip passes a suitable number of fastening screws or bolts 27 securing the respective clamping strip down upon the interposed gas release bar 23. Below the bottom surface of each strip 26, there is formed a series of fuel vents along each edge and between the spaced lugs 24 on the top of the bar. From this it will be seen that during combustion, flames will issue laterally for the full length of each side of the burner chambers 2 so that in instances, the flames from one side will play upon the contiguous oven wall, while the flames from the opposite longitudinal side will play upon a water back in a range. At the same time, the desired degree of heat at the top of the stove will be efficiently maintained by reason of the discharge of jets of flame inwardly from the inner parallel sides of the burner chambers 2. as the jets issue from beneath the strips 26. The burner outlets, being arranged high, allow fresh air to sweep in to aid combustion.

The bar-clamping strip 26 may be provided with top and bottom grooves in which is laid asbestos 26, or other material, to reduce the tendencyof the strip to warp. A bot tom covering 26 may be secured over the asbestos in the lower side of the strip.

It is desirable to provide'for the deflection of travel of flames of combustion from the burner vents down toward and to the inlet of the mixing chamber 4, and therefore-the front plate (3 may extend down and thus interrupt the tendency of the flames to travel down toward the intake where fresh air is drawn into the mixing tube 4.

The retort or generator pipe 14 is arranged between' the burner bars 23 and may contain any suitable medium to serve as a check or barrier against the rapid flow of liquid fuel from the supply 15 and a pre ferred barrier includes a roll of gauze 1 1, which is flattened; the roll enclosing suitable material to form a wick, such as of asbestos. I have found the practical form of construction to be one in which the wick containing cleaning by releasing the head 9 from the' finger 12 and by separating the union member 16 from the nut 16.

One of the important features of this construction is that the parallel gas chambers 2 'form, as it were, spaced hollow walls along each side of which the air can ascend freely to the built up gas release top structures upon the hollow walls. This allows the passage of air freely upwardly along the sides of the hollow walls to mix with the flames issuing from the fuel outlets along the built up burner tops.

What is claimed is:

l. A fuel generating burner having a discharge chamber with an open longitudinal mouth at its top and a fuel release bar applicable to the mouth and provided with spaced lugs to form, with the edge of the mouth a series of spaced fuel release vents; said release b'ar having lugs upon its upper and lower surfaces, and a cap member applicable to the top of the release bar, so as to form upper and lower release vents for the fuel.

2. A fuel enerating burnerhaving a discharge cham er with an 0 en longitudinal mouth at its top and a fue release bar applicable to the mouth and provided with spaced lugs to form with the edge of the mouth a series of spaced fuel release vents; said release bar having lugs upon its upper and lower surfaces, and a cap member applicable to the top of the release bar, so as to form upper and lower release vents for the fuel along the opposite sides of said bar.

3. A fuel generating burner having a shell structure with lateral fuel chambers provided with fuel release apertures, a mixing chamber disposed below the plane of said apertures and connected to discharge into the lateral chambers, a generating pipe, and means for conveying the vaporous fuel produced in the generating pipe and discharging it into the mixing chamber.

4. A fuel generating burner having a shell structure with lateral fuel chambers provided with fuel release apertures, a mixing chamber disposed below the plane of said apertures and connected to discharge into the lateral chambers at one end thereof, a generating pipe and means for conveying the vaporous fuel produced in the generating pipe into the mixing chamber at the other end whereby the fuel must pass for the full length of the mixing chamber bcfore entering the lateral chambers and then passes back through the lateral chambers to the release apertures.

5. A fuel generating burner having a shell structure With lateral fuel chambers, a mixing chamber connected to discharge into the lateral chambers, a generating pipe, means for conveying the vaporous fuel produced in the generating pipe and discharging it into the mixing chamber, means for proportioning the fuel vapor and air passing into the mixing chamber, and means arranged in the lateral fuel chambers for retarding the flow of fuel so as to prevent back-firing and for equally distributing the flow of fuel to discharge vents of said chambers.

6. In a gaseous fuel burner, a fuel release chamber provided with an elongated mouth in its top, a toothed bar engaging the top and having a slot therein registering with said mouth, the bar being provided with teeth on its upper and lower surfaces, the teeth on the lower surface engaging the top and forming therewith a plurality of fuel release apertures, and a plate overlying the bar forming a plurality of fuel release apertures with the teeth on the upper surface of the bar.

In testimony whereof, I have hereunto set my hand.

JESSE E. KRESKY.

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