US2600160A - Ribbon-type gas burner - Google Patents

Description

June 10, 1952 H. FLYNN RIBBON-TYPE GAS BURNER 2 SHEETSSHEET 1 Filed Jan. 5, 1949 June 10, 1952 FLYNN 2,600,160

RIBBON'TYPE GAS BURNER Filed Jan. 5, 1949 2 SHEETS-SHEET 2 a I I 74% for ya Patented June 10, 1952 ED srAT EES PATENT oreics RIBBON 'BYPE GAS BURN-ER;

JohmH; Flynn, New ltochcllaNrY. Application Janu-ary 5, 1949; Serial-No.'-69;275

6 Claims. (Cl. 158--11ii) Thepresent invention relates toaimprovements in: gas burnersv and: relates zmorea'particularly to gasburners of 'the'a'type commonly referred: to: as ribbon type andi usually including; a hollow casing or body having a. slot (either straighter curved) together with; a. pluralityof: corrugated metallic ribbons located in the slot ofithe said casing to provide a plurality oi-gas passages for the escape of gasfrom: therinteriorof the'said casing;

The gasabovereierred tosisrusuallya combustible mixture ofia hydrocarbon'gas and airnsual- 1y under an appreciable.amountotpressureto meet. the exigencies of both industriahanddomestic uses. The. combustible mixtures referred to vary widely with: respect. to both calorific values and their flame-propagation rates.

Theribbon-type gas burner of theipresent invention; in common; with similar. types 1 of? gas burners (if-117118 prior: art; provides :at least two typeszof gas .passagese-one type: to: provideiaalong flame extending to a-point. remote from theburner; and. another. type" of. gaslpassageproviding relatively 1 short pilot. flames. immediately; adj cent :the: burner; These relatively: short pilot flames. serve to. maintain the longer fiamesig nited; since thelatter flames are' usuallyproduced by gas movingat such; high velocity asto'exceed the 'fi'ameepropagation rate of the: mixture.

Asawill be apparent fromrthe:followingscon'rof? the-said corrugations :shaped to each. provide an :inner gas restriction: portion communicating with an outer gas-expansion portion:

Gne ofathemain: objects of: the present invention, .thereforais to provide arsimplie andefiioient corrugated ribbonr designed and adapted to: re-- strict: the :fiQW of: gas: andizto subsequentlyr'permit the saidgas .to' expand and ,providefor'aireliable piloting-'gasafiame;

I Anotherandmore: p cificnobi t-of therpresent invention is to provide, a superior transversely corrugated; ribbonsuitable. for assembly 'withother corrugated; ribbons in a: gas burnerato. reli-- ably provide both. high. velocity andr relatively low-velocity gas passages andlwhich willf not set; up appreciable distortion stresses: in. a.- burner structure when suchribbon expands-or contracts in use.

A further object of?v the. present invention. is-to: provide a. simple reliableand: efiicient construction: and. arrangement of corrugated. ribbons to. provide pluralities of high main flames: together withrrelatively low piloting flames;

With: the above: and. other objects in: view Lasv will appear to those. skilledrin: the. art fromithe present disclosure, this invention includes allifea tures in the said disclosure which. arenovel 1 over: the; priorart and: which; are not claimed by me in: my; tic-pending; application. Serial; No-.- 7 92,41 6,. filed December 18,1947, (now PatentNo. 2,499,482.

In. the .acoompanyingzdrawings, in which certain modes of; carrying out thepresent invention. are? shown for: illustrative purposes Fi-g; I is azbrolren toproryplan. view of. oneform of, a: ribbon-typevgas burnerr constructed in accordance with the presentinvention;

Fig. 2 is a transverse sectionalview-taken on th6'1il1e-2.2'0f Fig;1;

Fig. Kis a fragmentala plan view on an enlarged scale-ofiavportion' ofa theashowingof Fig. 1'; Fig; 4- is-xanr elevationalview. of a: fragment; of one of thecorrugatedtribbons and looking toward the face: thereof having the gas-restriction portions and gas; expansion portions;

Fig.5: is-an inner edge-view of the showing of Fig. 4;

Fig. 6-is a:brokenzperspectiveview of the ribbon shown. in Figs..: 4: and; 5.;

Fig.1? is a similarviewof. the diagonally 'corrugated. otherri-bbon shown in- Figs. 12 to 3 inclu- Fig. &- isaview simil'ar toFig; 3-butshowing another arrangement oft corrugated ribbons;

Fig; 9.-is abroken: view. similar to; Figs: 3.and 8 butshowing stil-l another arrangement of corrugated ribbons; in accordance with the? present invention; and

Figs 10 18:3,; perspective view of: a modified formof. the 3*1ibb011: shown in Figs-t. 4,,5 -an.d 61

The particular gas burner illustrated in Figs.

1 1 to 7. inclusive for purposessof making clear a preferred formof: =thepresent invention; includes arelatively long? hollow casing or body; generally designated: bythe-reference character l0. and having a longitudinal rib I I upstanding. from its upperisnrrace; The-casing. is provided: at; its respective opposite ends :with integral: end; walls l2 and I3 with the latter being aperturediand provided: with: internal. threads M; The said threads are adapted to receive: the threaded;- end of a supply pipe of: any suitable: nature (not shown) by means of which a suitable-gaseous combustible mixture maybe: supplied to. the: inter-ioron the casingginta manner well understoodin; the-art.

The: upstanding: rib it of: the :casing; I0: is formed with: arlongitudmal; slot: l5.- extending from=theinteriorito the exterior of the-said casing; and-terminatingrat its: ends short ot? the respective oppositeends of: the casing. as "is in dicated: in Fig.1.;

Mounted. in= th881017i5i ofi-thezcasing I0: is agroup'of. transversely corrugated.ribbons-Yformed of stainless steel: or other: suitable material and including .four substantially. identical ribbons 16a, lfib; i Brand: lfidjand'a single ribbon I'l -having its corrugations of a different character from those of the other ribbons just described.

The ribbons (6a, IGb, 16c, Hid and I! may be retained in place in the slot in any suitable manner such, for instance, as by transverse pins I8 indicated in Figs. 1 and 2.

The ribbons 16a, I61), I60 and Hid as above indicated are substantially identical with each other and their corrugations are so formed as to provide on one face of each ribbon a plurality of gas passages each of which includes a gasrestriction portion l9 located at the inner edge of the given ribbon and a gas-expansion portion 20. Each gas-restriction portion is of relatively small cross-sectional area as compared to its communicating gas-expansion portion 20 which is of relatively large cross-sectional area. Thus, each gas-restriction portion 19 communicates with and is complemented by one of the gas-expansion portions 20. The face of each ribbon 5a, [6b, "5c and Hid opposite the face in which the portions 19 and 20 are located, is provided with gas channels 2| which alternate in a longitudinal direction with the portions l9 and 20 just previously referred to and have substantially the same crosssectional area as the portion 20.

The ribbon I1 is, as shown, preferably corrugated so as to provide gas channels 22 in its respective opposite faces and which gas channels are inclined as is especially well shown in Fig. 7.

The ribbon lfia is shown in Figs. 1 and 3 as being in contact with the adjacent side wall of the slot IS in such manner that its gas channels 2| have one side closed by the said side wall. The ribbon IBb is reversed with respect to the ribbon its and is in contact therewith so that any given one of its gas passages constituted by a given communicating gas-restriction portion l9 and gas-expansion portion 20 are in registry with and complement the similar features of the ribbon lBa, as is especially well shown in Figs. 1 and 3.

The ribbon l! is interposed between the ribbon I51) and the ribbon IGc, and the latter ribbon cooperates with the ribbon 16d in the same manner as the two ribbons 16a and I6?) cooperate.

A combustible gas or gaseous mixture from the interior of the casing or body HI will pass out through the inner gas-restriction portions I9 of the various ribbons and be restricted in amount thereby and will pass then into the outer gasexpansion portions 20 where the velocity will be slowed down so as to provide the burner with suitable low pilot flames closely adjacent the upper surface of the ribbons. These pilot flames will maintain the taller flames provided by the combustion of the gases emerging from the larger passages.

The structure of Fig. 8 employs the same five ribbons illustrated in the preceding figures save that the ribbons are arranged differently.

In Fig. 8 the ribbon l6a is in contact with the adjacent side wall of the slot [5 as is the case in Figs. 1 and 3 but it is reversed so that the gas-restriction portions 19 and their respective complemental gas-expansion portions 20, face toward the said side wall. The ribbon l6d is likewise reversed from the showing of Figs. 1 and 3 so that its portions 19 and 20 face toward the adjacent side wall of the slot 15.

Furthermore, in Fig. 8 the ribbons l6!) and its are also reversed so that their respective gasrestriction portions l9 and gas-expansion portions 20 face toward the ribbon IT.

In the arrangement of ribbons shown in Fig. 8, a combustible gas or gaseous mixture will in its 4 outward flow, be restricted by the gas-restriction portions [9 and will thereafter be permitted to expand and slow down in the respective gas-expansion portions 20 which respectively communicate with the gas-restriction portions l9.

Thus, piloting flames are provided in a simple and effective manner to sustain the burning of taller flames resulting from gas emerging through the larger and relatively unrestricted gas passages at relatively high velocities.

In Fig. 9 there is shown as mounted in the slot 15 of the casing or body [0, three pairs of transversely corrugated ribbons respectively designated as 23t-23b, 23c-23d and 23e-'23f similar to the ribbons 16a, I61), I60 and 16d previously described in that they are each provided in one face with gas passages each including an inner gas-restriction portion 24 in communication with an outer gas-expansion portion 25 respectively having the same general characteristics as have been described previously in connection with the portions l9 and 20.

The face of each ribbon opposite the face in which the portions 24 and 25 are formed, is provided with gas channels 26 which alternate in a longitudinal direction with the portions l9 and 20 and have a slightly larger cross-sectional area than the said portions 20.

The pair of ribbons 2300-231) have their corrugations arranged in registration and in opposition to each other, as do also the respective pairs of ribbons 23c-23d and 23e23f. The arrangement is such, however, that the intermediate pair of ribbons 230-2311 is displaced longitudinally so that their respective similar corrugations are located intermediate the similar corrugations of the ribbons 23a23b and 23e23f.

By means of the arrangement of ribbons shown in Fig. 9, the relatively large passages provided by the mating gas channels 26 of the various ribbons will provide for relatively tall flames, each of which will have adjacent its base, pilot flames provided by gas burning close to the surface of the said ribbons and flowing outwardly, first rapidly and in small volume through the gas-restriction portions 24 and thence slowly out of the gas-expansion portions 25.

The ribbons lGab-cd and 23a.bcd 9- all have their respective gas-restriction portions located at the inner edges of the ribbons. In the ribbon 21 illustrated in Fig. 10, there is provided a plurality of corrugations each including a lead-in portion 28 leading outwardly from the inner edge of the ribbon and at its outer end communicating with a gas-restriction portion 29. At its outer end, the gas-restriction portion 29 communicates with a gas-expansion portion 30.

The lead-in portions 28 and the gas-expansion portions 30 above described have relatively large cross-sectional areas as compared to the crosssectional area of the gas-restriction portion 29, and preferably the portions 28 and 30 will be substantially identical so that the ribbon may be reversed as desired.

The face of the ribbon 21 opposite to that in which the portions 28, 29 and 30 are formed is. in turn, formed with gas channels 31 similar to the gas channels 22 and 26 before described.

Ribbons like 21 may be used in various assemblies to replace or supplement the ribbons previously described.

The invention may be carried out in other specific ways than those herein set forth without departing from the spirit and essential characteristics of the invention, and the present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, and all changes coming within the meaning and equivalency range of the appended claims are intended to be embraced therein.

I claim:

1. A ribbon-type gas burner, including in combination: a casing having a slot therein which leads from its interior to its exterior; and. a group of transversely corrugated ribbons located in the slot of the said casing; said group of ribbons including at least one ribbon having a plurality of transverse corrugations each shaped to provide an inner gas-restriction portion of relatively small cross-sectional area and a coaxial outer gas-expansion portion having a relatively large crosssectional area as compared to the said gas-restriction portion and communicating directly with the latter by a sharply converging throat portion; whereby gas escaping from the interior of the said casing will be limited in volume by the said gas-restriction portions and later permitted to expand and slow down in the said gas-expansion portions before emerging through such corrugations.

2. A ribbon-type gas burner, including in combination: a casing having a slot therein which leads from its interior to its exterior; and a group of transversely corrugated ribbons located in the slot of the said casing; said group of ribbons including at least one ribbon having a plurality of transverse corrugations alternate ones of which are shaped to each provide an inner gas-restriction portion of relatively small cross-sectional area and a coaxial outer gas-expansion portion having a relatively large cross-sectional area as compared to the said gas-restriction portion and communicating directly with the latter by a sharply converging throat portion; whereby gas escaping'from the interior of the said casing will be limited in volume by the said gas-restriction portions and later permitted to expand and slow down in the said gas-expansion portions before emerging through such corrugations.

3. A ribbon-type gas burner, including in combination: a casing having a slot therein which leads from its interior to its exterior; and a group of transversely corruguated ribbons located in the -slot of the said casing; said group of ribbons including at least a pair of mutually engaging ribbons each having a plurality of transverse corrugations registering with the similar corrugations of the other of the said pair and each of which corrugations is shaped to provide, in conjunction with a registering similar corrugation of the other ribbon of the other of said pair of ribbons, an inner gas-restriction portion of relatively small cross-sectional area and a communicating outer gas-expansion portion having a relatively large cross-sectional area as compared to the said gas-restriction portion; whereby gas escaping from the interior of the said casing will be limited in volume by the said gas-restriction portions and later permitted to expand and slow down in the said gas-expansion portions before emerging through such corrugations.

4. A ribbon-type gas burner, including in combination: a casing having a slot therein which leads from its interior to its exterior," and a group of transversely corrugated ribbons located in the slot of the said casing; said group of ribbons including at least a pair of mutually engaging ribbons each having a plurality of transverse corrugations registering with similar corrugations of the other ribbon of the said pair and each alternate ones of which registering corrugations being shaped to provide, in conjunction with a similar registering corrugation of the other of said pair of ribbons, an inner gas-restriction portion of relatively small cross-sectional area and a communicating outer gas-expansion portion having a relatively large cross sectional area as compared to the said gas-restriction portion; whereby gas escaping from the interior of the said casing will be limited in volume by the said gas-restriction portions and later permitted to expand and slow down in the said gas-expansionportions before emerging through such corrugations.

5. A ribbon-type gas burner, including in com-' bination: a casing having a slot therein which leads from its interior to its exterior; and a group of transversely corrugated ribbons located in the slot of the said casing; the said group of ribbons including a pair of substantially identically corrugated ribbons and a third ribbon interposed between the said pair, each of the said pair of ribbons having a plurality of transverse corrugations each shaped to provide an inner gas-restriction portion of relatively small cross-sectional area and a coaxial outer gas-expansion portion having a relatively large cross-sectional area as compared to the said gas-restriction portion and communicating directly with the latter by a sharply converging throat portion; whereby gas escaping from the interior of the said casing will be limited in volume by the said gas-restriction portions and later permitted to expand and slow down in the said gas-expansion portions before emerging through such corrugations.

6. A ribbon-type gas burner, including in combination: a casing having a slot therein which leads from its interior to its exterior; and a group of transversely corrugated ribbons located in the slot of the said casing; the said group of ribbons including a pair of substantially identically corrugated ribbons and a third ribbon interposed between the said pair, each of the said pair of ribbons having a plurality of transverse corrugations, each alternate one of which corrugations in a given ribbon of said pair being shaped to provide an inner gas-restriction portion of relatively small cross-sectional area and a coxial outer gasexpansion portion having a relatively large crosssectional area as compared to the said gas-restriction portion and communicating directly with the latter by a sharply converging throat portion; whereby gas escaping from the interior of the said casing will be limited in volume by the said gas-restriction portions and later permitted to expand and slow down in the said gas-expansion portions before emerging through such corrugations.

JOHN H. FLYNN.

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

UNITED STATES PATENTS Germany May 11, 1918

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