US2464333A - Radiant incandescent gas burner - Google Patents

Description

F. G. M GLAUGHLIN 2,464,333

7 RADIANT INCANDESGENT GAS BURNER March 15, 1949.

I 3 Sheets-Sheet '1 Filed Jan. 10, 1947 I March 1949- F. G. MCGLAUGHLIN RADIANT II ICANDESCENT GAS BURNER Filed Jan. 10, 1947 5 Sheets-Sheet 2 M 9 F. G. MCGLAUGHLIN 4,333

RADIANT INCANDESCENT GAS BURNER Filed Jan. 10. 1947 5 Sheets-Sheet 3 Patented Mar. 15, 1949 UNITED STATES PATENT OFFICE FrederickG. McGlaughlin,"Hastings Hudson, N. Y

Application January 10, 1947, Serial No. 721,172

im'ysprovides meansfor radiating the infra-red rays. The-term infra-red ray means radiant vi ;br ations-'near the red end of the lightspectrum at a frequency invisible to the eye These electromagnetic infra-red rays in themselves contain .ng heat and develop heat only when they are absgrbed by some object. 'Ifhus heat transferred by infra-red rays from-,thesource to the object to be heated is absorbed substantially 100% ,c T he purpose of this invention is therefore, to

efiiciently combine a refractory with a burner,

,wh erein mes es provided at the point of igniion or combustion for'radiatingthe infra-red rays of burning vol'atile'gases'. ZCFTO further increase the efiiciency of burners using a refractory'it has been found desirable to T iovide means for holding the gases of combustionin combination with an incandescent radiating body, and to accomplish this'end the invention includes flutes in the surface of the refractory and with the surface thereof shaped'to increase the area of radiant incandescent surface. To further facilitate burning gases in combination with refractory elements it has been found necessary, not only' to groove or flutethecontacting surface," butalso' slope the surface of the refractory downward from. the .central chamber from which"thegases are being ejected thereby providing a hollow in which the gases are retained until complete absorbtion and combustion takes :AJwQn-J :I. 2"...) F:.' I Because of the intense heat of burners of this type it has also been found necessary'to replace the usual sheet metal or structural framework around-the refractory which-forms the supporting;elemen ts, with substantially heavy cast iron 1);; steel -elen 1ents, --and-forextremely high temperatures "siliconcarbide supporting plates are In 'order to obtain the maximum of efiiciency of burning gases in combination with refractory 2 claims. (01. 158 99) ill material it is essential to provide equalized distribution in the burner tube so that precisely the same amounts of the gases are being ejected at all points along the burner elements.

With these and other ends in view the invention contemplates a burner comprising a plural.- ity of comparatively'sh'ort gas ejecting units with each unit fed through an individual supply tube, with constricted or venturi sections in the units, and with the supply tubes communicating with a relatively large header.

The object of this invention is, therefore, to improve the construction and arrangement of the parts of burners used for high temperatures and particularly in combination with refractory elements wherein burning is evenly distributed along the burner and the life of the burner is extended.

Another object of the invention is to form the surface of refractory elements used'in combination with burners so that the gases are held in contact with the refractory and do not just rush over the surface thereof. I

Another object of the invention is to provide a mounting for refractory elements 'of burners wherein the high heat of combustion does not burn the supporting elements of the burner.

Another object of the invention is to provide means for evenly distributing the burning gases of elongated burners. A further'object of the invention is to provide means for increasing the area of incandescent surface of refractory elements used in combina tion with burners wherein the maximum quantity of radiant heat is emitted.

A still further object of the invention is to provide a comparatively short burner unit which in itself is complete wherein a plurality of units may be used end to end to form a continuous burner with even distribution throughout the length thereof. b

With'these' and other objects in view the invention embodies a burner unit having a cast iron base, with ca'stiron supporting side plates, a' centrally disposed longitudinally extending gas supply chamber, refractory elements with fluted concave exposed surfaces between the supply chamber and side plates, and a continuous header with'individual supply connections to the units.

T Otherfeatures and advantages of the invention will appear from the following description taken in connection with the drawings, wherein: Figure 1 is a view showing a section throu h one of the burner units and header, the section being taken adjacent one end of a continuous burner.

Figure 2 is a View illustratin an end elevation of one of the burner units with parts broken away and parts in section.

Figure 3 is a section through one of the refractory elements on line 33 of Figure 2.

Figure 4 is a plan view of a base element with part of a burner head shown thereon in which the burner head is broken away and shown in section.

Figure 5 is a view showing a side elevation of a burner head with a base in combination therewith with parts shown in section.

Figure 6 is a view showing a front elevation of a burner end unit with a side plate shown in section at one side.

Figure 7 is a top plan view of the burner end assembly shown in Figure 6.

Figure 8 is an end view of the burner end assembly shown in Figure 6 with the side plate omitted.

Figure 9 is a cross section through the burner end on line 9-4? of Figure 6.

Referring now to the drawings wherein like reference characters indicate corresponding parts the radiant infra-ray gas burner of this invention includes a base I0, side plates II and [2, end plates l3, refractory elements l4 and a header l5.

The base It is formed with an upper plate 16 having recesses IT at the sides and diagonally extending lugs l8 at the corners. In the center of the base is an opening 19 having a surrounding flange 20 and a hub 2! of the burner header I5 extends downward through the opening to provide means for connecting the header to a supply manifold 22 through a connection 23 as shown in Figure 1.

A header 24 of a modified design is shown in Figure 2 wherein inwardly extending webs 25 and 26 are provided on the inner surfaces of the sides so that a constricted venturi area 2'! is formed intermediate of the height of the header to insure even distribution of the gases throughout the header. In this design a connection 28 is threaded into the base 29 of the header as shown and the connections 28 connect the burner units to a manifold similar to the manifold 22 shown in Figure 1.

The upper surface of the header is provided with rows of orifices 36 adjacent the edges thereof and baffle plates 3| are positioned above the headers and spaced therefrom by spacers 32, as shown in Figures 1 and 2. The bafiles 3! and spacers 32 are held to the headers by screws 33, and the ends of the spacers are provided with wings 34 as shown in Figure 4 to close the areas at the ends of the headers.

The associated surfaces of the refractory elements are formed with substantially V-shaped flutes 35 which extend backward into the refractory material having arcuate formations increasing the area of the contacting incandescent surfaces of the elements to obtain maximum radiating surface areas.

The refractory elements are held with clamping action to the base by side plates II and I2 and the side plates are held by screws 36 which extend into the sides of the base.

The burners may be formed of one, or any number of units, and the ends may be closed by sections l3 as shown in Figures 1, 6, and 9. The end sections I3 are provided with pockets 3! with overhanging flanges 38 at the upper ends and base elements 39 adjacent the lower ends. Refractory elements 4|] are provided in the pockets, and for high temperature burners the ends and special side plates 4| may be made of silicon carbide. The ends l3 are attached to the base elements 10 by screws 42 as shown in Figure 9, holding the refractory elements therein by clamping action.

The improved gas burner of this invention, therefore, includes a continuous burner formed of comparatively short burner units with each unit fed through a burner header from a supply manifold, and the individual units include refractory elements the exposed surfaces of which are shaped to provide the greatest possible incandescent radiating areas, and the refractory elements are supported in relatively heavy cast elements. The burner units are also provided with constricted internal areas to further facilitate equalized distribution of the gases for burnmg.

The radiant incandescent burner and the associated parts of this invention are illustrated in the preferred forms, however it will be understood that modifications may be made in the parts without departing from the spirit of the invention.

What is claimed is:

1. In a radiant gas'burner, the combination, which comprises, a longitudinally'extending centrally disposed gas ejecting header with a hollow chamberon the interior thereof and having rows of orifices in the upper surface, adjacent the edges thereof, and communicating with the chamber, a baffle plate spaced above the upper surface of the header, mounted thereon and extending over said orifices, the edges of said baffle plate forming, with the header, laterally directed slots communicating with said orifices, elongated refractory elements with concave surfaces positioned on opposite sides of the header and spaced from said baflle plate, the lower edges of said concave surfaces being immediately below said slots whereby the flame from said slots is directed against said surfaces and provides incandescent radiating bodies for accelerating combustion of the gases, a cast iron base on which the said refractory elements and header are positioned, cast side plates attached to the base holding the said refractory elements, and a supply manifold positioned below the burner with connections through the base to the header.

2. A gas burner as described in claim 1, wherein the header is rectangular-shaped in cross section having side walls, a base, and an upper surface, and wherein the inner surfaces of the side walls extend inwardly providing a centrally disposed longitudinally extended constricted area midway of the height of the header.

FREDERICK G. MCGLAUGHLIN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Howe Nov. 24, 1942

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