US1288450A - Gas-burner for furnaces. - Google Patents

Description

H. C. SMART.

GAS BURNER FOR FURNACES.

APPLICATION FILED APR. 11. 1918.

Patented Dec. 17, 1918.

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HENRY 0'. SMART, or BROOKLYN, NEW YORK, Assrenon 'ro s'rAivnAnn OIL ooMrAn on NEW YORK, or NEW man, it. Y., A CORPORATION or NEW YORK.

GAS-BURNER FOR FURNACES.

Lasagna.

Specification of Letterslatent,

Patented Dec. it, 1918.

original application filed September 11, 1917, Serial No. 190,739. Divided and this application filed April 11, 1918. Serial No. 227,853.

To all whom it may concern:

Be it known that I, HENRY C. SMART, a citizen of the United States, and a resident in the borough of Brooklyn, county of Kings, city and State of New York, have invented certain new and useful Improvements in Gas Burners for Furnaces, of which the following is a specification, reference being had to the accompanying drawings.

This application is a division of myiormer application Serial No. 190,739, filed September 11, 1917, for gas burners for use under stills, boilers, kettles and the like.

Generally stated, the purpose of this invention is to so construct the gas and air supplying and burning devices and to so correlate them with the setting of the boiler, still, or like Structure in connection with which they are used, that certain defects in former constructions may bev obviated and increased eiliciency secured; that is to say, by inclosing the air and gas supply pipes and their res ective .burner tubes and jets within the bIlCk work of the setting, they are sustained in their positions and proteoted against excessive heat, so that buckling and burning out of the gas and air pipes are largely revented, and consequently their durability greatly enhanced. Also more perfect admixture of the gas and air and more perfect distribution and control thereof are secured than heretofore.

In the drawings hereof 1 illustrate and I shall herein describe the invention as applied to a still adapted to oil distillation I wish it to be understood, however, that my'invention is adapted to gas burners used in furnaces generally under boilers, stills, kettles, evaporators and the like.

In the drawings, Figure 1 is a horizontal sectional view of the brick setting of a still, showing the air and gas supply pipes and cod crating parts embedded therein, the still itself, however, being omitted; Fig. 2 is a vertical sectional view on the line 22 of Fig. 1, showing diagrammatically the still or boiler in position; Fig. 3 is an enlarged plan view, partly in section, of certain details of the gas and air pipes and thelr jets and burners; Fig. 4 is a sectional view of that which is shown in Fig. 3, taken on the line 44 of Fig. 3.

In the drawings 1 represents the brick work setting of the still, 2 the grate bars, 3 the bridge wall, 4 the filling plate, 5 the door, 6 the stack, 7 the combustion chamber. All these parts are, or may be of any preferred construction. The combustion chamber should, however, be on about the same level as the grate bars, so that the heat generated by the burning gas may properly 1mp 1nge on the boiler or still.

8, 8, are metallic air supply pipes closed at one end by suitable caps 9, and provided with laterally disposed burner tubes 10.-

There are in the present instance seven such tubes connected with each of the pipes 8. There may be more Or less, as preferred. In order that this part of the apparatus may be more plainly understood, it represent at the upper part of Fig. 1 these devices as inclosed within the brickwork and at the lower part of the same figure I represent them as shown in full lines as though they were exposed. It will be understood, however, that both the pipes 8 and preferably also the burner tubes 10 are embedded within the brickwork setting, so that they may be sustained and protected thereby and relatively cool therein. L

11, 11, are two gas supply pipes located within the pipes 8. lhey are centered therein by centering screws 12, as shown best in Figs. 3 and 4. There may "be as many of these screws as desired and. they may be spaced along the pipes as may be necessary to properly support and center the gas pipe and its jets relative to the airy pipes and its burners. The gas supply pipes 11 are provided with burner jets 13, which are so spaced upon the gas pipes that they register with the centers of the burner tubes 10. The jets are preferably not so long as the burner tubes, thus securing better admixture of the gas and air. 14: is an air supply pipe which connects at each end with air supply pipes 8, 8, and a branch 15 from it may conn ect with a suitable blower or fan 16, which may be operated by a belt pulley 17, or in any other preferred manner.

The operation is as follows:

Coal, or its equivalent, is burned upon the grate bars in the ordinary way and the heat from that fire exerts its influence upon the forward part of the boiler or still, but a portion of the combustible material, solid and gaseous, thrown old by the burning coal, is carried over the bridge wall 3 and into the combustion chamber 7, and were it not for the presence of the gas burners therein this material, or a part of it at least, would be apt to be carried through the combustion chambgr without complete combustion and p'ass bfii through the stack and thus a part of the heating properties of the fuel be lost.

Under my improved construction and arrangement of the parts the gas enters from its source of supply through the pipes'll and passes out through the jets 13 into the burner tubes 10, and at the same time air enters through the air supply pipes 8 and mingles with the gas in the burner tubes 10; and in order that the, proper admixture of air and gas may be secured, I prefer to regulate the supply of air by the employment of a suitable fan or blower 16, so that the right proportion to coincide with the character and quality of the gas may be assured. Sometimes if the gas in its container is under requisite pressure, it will blow through the burner jets 13 into the burner tubes 10 in such manner as to cause them to operate on the principle of a Bunsen burner, since the jets will by their own suction draw in the requisiteamount of air. It will be understood, therefore, that the proper mixture of gas and air may be secured either by regulating the air supply, as by a blower, or

by regulating the gas supply and its pressure.

The gas burned in the combustion chamber 7 as above stated, generates intense heat therein, through which, the combustible material thrown 0E by the coal must necessarily pass on its way to the stack, so that not only is the gas itself completely consumed but also all unconsumed products of combustion, solid and gaseous, which come over the bridge wall from the coal,

I have furthermore found that there is a preferred location for the gas burners within the combustion chamber; that is to say, they should'occupy a position substantially equidistant from the bridge walland the stack, because the products of combustion coming from the coal are usually deflected upwardly by the bridge wall and coming in contact to a greater or less degree with the bottom of the boiler or still, will by it be deflected downwardly, and during the time that these unconsumed products of combusnasaaeo tion are, so to speak in midair on their way through the combustion chamber is when the burning gas can best attack them because then the flame can surround them completely, since they receive no protection either from the still bottom above'or from the bottom of the combustion chamber below. In this way practically all the heat producing elements of the coal and of the gas are beneficially employed and little if any, of it is lost up the stack.

Aside from the foregoing, oertainadditional and important advantages are secured by my invention, that is to say,sin gas burners of the class here referred to, the gas and the air supply pipes'and the jets and burner tubes therefor have usually been partially and in some instances entirely exposed in the bottom or at the sides of the combustion chamber, and consequently are subjected to great heat, so that after a time the heat causes the pipes to buckle andburns them out, necessitating frequent renewdl'. Under my invention these relatively perishable parts are wholly embedded within and sustained and protected by the solid brickwork of the setting and consequentl are maintained in a condition of relative coolness, are not distorted and lasta long time.

It will be obvious to those who are familiar with such matters that modifications may be made in the details of construction without departing from the essentials of the invention. ll therefore do not limit myself to the details shown and described.

I wish it to be understood that although required to divide my said former applica' tion, Ido not disclaimer abandon any patentable subject matter which may be disclosed but not claimed herein, because such subject matter will, so far as may be permissible, be claimed in said former application.

I claim:

1. A gas burner for stills and the like embodying a continuous air supply pipe, which extends as-an unbroken pipe to the exterior of. the still setting, burner tubes connected therewith, a gas supply pipe substantially co-extensive in length with the air supply.

pipe, jets shorter than the burner tubes conits nected with the gas supply pipe and located respectively within the respective burner tubes, and adjustable centering devices located between the ends of the air supply pipe and supported by it and which support and center the gas supply pipe within" the air supply pipe.

2. A gas burner for stills and the like embodying an air supply pipe, which extends as an unbroken pipe to the exterior of the still setting, burner tu'bes connected there with, a gas supply pipe substantially co-extensive in length'with the air supply pipe and located within it, jets shorter than the the gas supply pipe and the jets connected burner tubes connected with the gas supply therewith, and means to regulate the supply pipe and located respectively Within the reof gas.

spective burner tubes, adjustable centering In testimony whereof I have signed my 10 5 devices located between the ends of the air name to this specification.

supply pipe and Which support and center HENRY C. i: T.

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