US2286489A - Liquid fuel burner - Google Patents

Description

June 16, 1942. D. M. JONES LIQUID FUEL BURNER Filed Jan. 30, 1940 O O O O Patented June 16, 1942 LIQUID FUEL BURNER Daniel M. Jones, Irving, Tex., assignor to Richard S. Moore, Grand Prairie, Tex.

Application January 30, 1940, Serial No, 316,418

1 Claim.

This invention relates to liquid fuel burners, and has for one of its objects the production of a natural draft liquid fuel pot-type burner which is so constructed as to efficiently mix oxygen (or air) with the gas vapors to provide an efficient combustion, when installed in commonly used liquid fuel stoves or furnaces, and the like.

A further object of this invention is the production of a liquid fuel burner which will possess a long range of operation on varied drafts and will produce a wide-pronged flame, Without the use of extra parts or spreaders.

Other objects and advantages of the present invention will appear throughout the following specification and claim.

In the drawing:

Figure 1 is a vertical sectional view of the burner; and I Figure 2 is a top View, a certain portion being shown in section taken on line 22 of Figure 1.

By referring to the drawing, it will be seen that In designates the base of the burner which is provided with a dished bottom II to provide a fuel compartment l2, the fuel being fed to this compartment I2 through the feed pipe I3, which feed pipe may be connected to any source of liquid fuel supply. A lighted door spout I4 is carried by the base Ill preferably upon the opposite side with respect to the feed pipe I3 and is of suflicient size to permit of the insertion of a piece of lighted paper therethrough into the compartment I2 for the purpose of igniting the liquid fuel within the dished bottom H. The burner may also be lighted from the top thereof if desired, but better results may be obtained by inserting the lighting element through the spout I4.

The body I5 of the burner which extends above the base I0 and forms preferably an integral part thereof, is provided upon the side walls witha plurality of inwardly pressed portions I6, and the side walls, including the inwardly pressed portions, are perforated by means of perforations IT. A series of perforations I 8 are formed around the top portion of the base Ill and the perforations I! extend vertically of the wall and depressed portions and also along the top inclined portions I9 of the depressed portions I6. The body of the burner is provided with an enlarged top portion 20 having a series of perforations 2| in sections between the depressed portions. The

depressed portions I6 are preferably concavoconvex in cross section, and are pressed inwardly toward the center of the body I5, as is shown in Figures 1 and 2.

The operation of the burner is as follows:

The fuel is lighted within the compartment I2 and becomes ignited in a few seconds and the metal of the burner has sufficient heat to vaporize the fuel. As the fuel is vaporized, the vapor is lifted upwardly .by the draft of the stove or furnace within which the burner is placed, and as these vapors travel upwardly, they pass over and betweenthe perforations I! along the inner face of the wall of the body I5 and depressed portions I6 and in so doing, the vapor is compressed in volume and is pierced from all angles with small streams of air or oxygen, As these vapors which are then permeated, or thoroughly mixed with the small streams of air reach the upper portion 20 of the burner and pass into the upper compartment of the stove, a complete mixture for combustion is provided, this being very essential in thefficiency of a natural draft burner. The particular construction of the burner makes this complete mixture possible. The burning vapors pass upwardly between and over the perforations formed in the inwardly pressed portions I6 which produce a corrugated body for the burner and these inwardly pressed portions, as stated above, are perforated along the vertical walls thereof and along the top portion. The gases follow the corrugations or inwardly pressed portions upwardly and over the top of the same, automatically spreading the flames.

From the foregoing description and bycarefully noting the drawing it will be obvious that the draft drawn upwardly from the outside of the burner will cause the jets of air to be forced through the perforations I1, and, thereby thoroughly mix with the gas vapors, the air jets piercing the gas vapors through from all angles to provide perfect combustion. Furthermore, the arrangement and construction of the top portion 20 'of the burner by providing the perforations 2| in sections, between corrugations, a wide-pronged flame will be provided without the necessity of extra parts or Spreaders being provided. As

stated above, the lighting spout I4 is optional, and the burner may be lighted from the top under proper conditions, but by providing the lighter spout l4, occasional cleaning will be facilitated and the burner may be ignited more quickly. The burner may be adapted to a wide range of heating units, such as radiant heaters,

circulators, small boilers, furnaces, and the like,

Certain detail changes in the mechanica lcon- .struction may be employed without departing from the spirit of the invention, so long as such changes fall within the scope of the appended claim.

Having described the invention, what is claimed as new is:

A burner of the class described comprising a body having a fuel compartment at its lower end and an open upper end of a diameter equal to the greatest diameter of the body, means for feeding fuel to the fuel compartment, said body having a plurality of spaced inwardly-pressed portions in the side walls thereof terminating in spaced relation with respect to the upper and lower ends of the body, the inwardly-pressed portions having lower ends inclined inwardly and upwardly for directing flame from the fuel compartment toward the center of the body, said inwardly-pressed portions also having outwardly and upwardly inclined upper ends for spreading the flame outwardly throughout the entire circumference of the open upper end of the body, the inwardly-pressed portions providing a restricted central passage flanked by a plurality of straight upwardly-directed draft passages laterally of the inwardly-pressed portions, the body having perforations below the inwardly-pressed portions and near the top of the fuel compartment, the inwardly-pressed portions having perforations and the side walls of the body being perforated, the upper inclined ends of the inwardly-pressed portions also being perforated, and the body having perforations near its upper end just above the inwardly-pressed portions, the perforations facilitating combustion and the formation of the body providing means to concentrate and then spread the flame and accelerate the upward passage of the flame.

DANIEL M. JONES.

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