US2156533A - Gas burner - Google Patents

Description

P. S. HARPER May 2, 1939.

GAS BURNER Filed May l, 1937 unumnnuu lllIllllIlIlI/lllll Patented May 2, 1939 .UNITED STATES PATENT OFFICE GAS BURNER Philip S. Harper,

Ill assisnor, by direct chicago. and menne assignments, of one-fourth to Caroand one-fourth to Philip S.

mais my 1, 1931, semi No. 140,110

sclaims.

This invention relates to gas burners ot the type used in top burner assemblies ol kitchen ranges and particularly to so-called double burners which embody in their construction, a main I burner and a simmer burnerr The improvement provided by this invention has particular application to` double burners of the above mentioned type which employ an automatic lighting means in the form of a flash tube i0 which extends from a pilot light located at one side of the burner and serves to convey gasto a point adjacent the simmer burner so that in operation the simmer burner may become automatically lighted and after becoming so lighted 15 may serve to light the main burner when the main burner is supplied with-a combustible gas mixture through suitable valve means. Burners of the type here referred to are usually provided withseparate supply pipes for conveying $0 the combustible mixture to the simmer and main burners, respectively. ,and in addition, each pipe is preferably provided with suitable valve means which may be of any suitable construction and 4 if desired, may be formed in accordance with the 25 disclosure of the copending application of the y applicant and George rll". Turner, Serial No.

119,982, filed January 11, 1937.

In the applicant's Patent No. 2,032,877, of March 3, 1936, there is disclosed a double burner 80 comprising an annular main burner and a central simmer burner in connection with which an automatic flash tube is provided which passes through the annular burner and terminates at a point adfjacent the simmer burner. i This tubeV is adapted BB to receive gas from a lighter port or iet provided in the side of the simmer burner and when the valve is operated to feed the combustible mixture to the simmer burner it passes the desired amount of gas into the ash tube where it ignites upon 4o reaching the pilot light and then burns or flashes back in the tube'so as to light the simmer burner. The burner construction disclosed in this patent provides an annular space between the simmer burner and the surrounding main burner through et which secondary air of combustion passes in an upward direction to sustain combustion of the burners.

Whereas the burner disclosed in said patent constitutes a desirable improvement in the art 50 and works satisfactorily, with most gases, it has been found that the annular opening deilned by the main burner and the centrally disposed simmer burner, under certain conditions creates` an upward draft of air of such intensity that it interferes to some extent with the feeding of a combustible mixture into the ilash tube as intended ior its automatic operation as described in said patent. It will be apparent that the upward draft of air passes at right angles to the opening in the lighter port or iet and that if the l draft is suillciently great in comparison to the feeding pressure of the combustible mixture, that some difiiculty may be experienced in assuring the passage of the combustible mixture across the annular space into the ash tube in sumcient l0 quantity to permit the igniting and back burning from the pilot light to the simmer burner within the limited period of time which is required for good commercial operation. 'Ihis is particularly true ln cases where the burner has 15 been used and is still hot as the heat ot the burner serves to increase the upward draft of air through the annular space referred to. This condition is aggravated in those installations where the gas pressure is low. i0

Accordingly, the main object of this invention is to provide a double burner of the type referred to which embodies all oi the advantages of the burner set forth in applicant's Vsaid Patent No. 2,032,8'77 and yet is capable of being lighted under 25 all conditions of temperature and gas pressure and in the minimum period of time and well within the time allowed for good commercial practice. 1

The invention in its broadest aspect embodies 9 in its construction means located between the main burner and the central simmer burner which serves to control the upward draft at the location where the gas is fed irom the lighter port or jez into the man tube and yet, Ywhich will at the same time, permit the upward e of a suiilcient supply oi secondary air to sup port combustion at the location of the main and simmer burner openings.

A further object of this invention is to provide 0 a novel construction for accomplishing the results referred to which may be so made as to provide the main and simmer burners as one structural element, either formed integrally or as separate parts secured together to form a unitary structure. This invention is applicable to burners having the main burner 1openings extending inwardly or outwardly or in any other convenient manner. In eases where the main burner openings 50 are centrally` disposed they are naturally presented in such relationship to the simmer higher that upon supplying the combustible miiture thereto, they will immediately become lightdirom the simmer burner. In those cases f however, where the main burner openings are so remote from the location oi' the simmer burner openings as to preclude the automatic lighting of the main burner from the simmer burner, then, some suitable means must be provided for causing the lighting of the xnain burner lfrom the previously lighted simmer burner. In this connection attention is directed to the applicants copending application Serial No. 96.938, led August 20, 1936, which shows a construction somewhat similar to the construction here described and claimed but dierentV therefrom particularly in that the main burner openings are located on the exterior of the main burner rather than on the interior thereof. A comparison of this case and the applicants copending case. Serial No. 96,938, above referred to will reveal that some of the structural features embodied in the present invention are disclosed in said copending application and to the extent of such common subject matter, this application is based upon and carved out of the disclosure of said copending application, and thus may be considered as a division in part, thereof.

The invention is illustrated here as applied to a burner having the main burner openings extending inwardly and it will be apparent that this placement of the main burner openings which is desirable in some instances for centrally concentrating the heat, necessitates the supplying of the secondary air of combustion upwardly through the central annular space and that this makes the problem solved by this invention all the more diiiicult.

The means employed in this invention for controlling the upward draft of air adiacent the lighter port comprises a horizontally disposed plate or partition which extends between the main burner and the simmer burner preferably in a plane above the lighter port but below the plane of the simmer burner openings. I'his partition is positioned between the lighter port and the simmer burner openings so as to effectively interrupt the upward e of such large amounts of air at the location of the lighter port as would create undesirable drafts.

This partition must however. be so as to provide for the upward passage of a sufficient quantity of secondary air to sustain combustion at the burners. In those instances where the main burner openings are placed interiorly and rely upon secondary air coming up through the center of the burner there is required a greater capacity for the passage of air in the annular space. In addition. a suitable opening must be provided in the partition adiacent the lighter port to enable the e of the igniting llame from the lighter port to the openings in the simmer burner.

One embodiment of the present invention is hereinafter described in detail and consideration of the following description of this illustrative embodiment in connection with the accompanying drawing will provide a better understanding of this invention, it being understood that the invention may take other forms and is not to be limited other than as hereinafter set forth in the appended claims.

In the drawing, Figure 1 represents a plan view of a portion of a burner assembly showing two burners constructed in accordance with'this invention together with an associated pilot light, and

Figure2isacrosectionalviewineievation takenonthelineI-Iof'lgureiandlooking in the direction of the arrows and showing one of the burners and the associated pilot light.

The embodiment of the invention illustrated in the drawing comprises a main annular burner III which has the enclosed interior gas space II and the inside burner openings I2. The annular burner III is interrupted at one point in its circumference by the radially disposed tube member I3 which may be formed as an integral part of the annular burner as shown in Figure 2. At the location of the tube I3, which constitutes the inner end of the 'flash tube and on each side thereof, the bottom of the annular gas space II is out away to form communicating openings for connection with a suitable conduit for supplying the combustible mixture of gas and air to the main burner.

Within the center of the main burner a parti- .tion I4 is provided which has a plurality of openings IB therethrough, preferably of substantially the size and shape represented in Figure l. These openings are disposed adjacent the outside edge of the partition I4 so as to provide a centrally disposed disk-like portion IB surrounding the head I1 of the simmer burner.

As shown in Figure 2, the head of the simmer burner, the main burner, the partition, and the portion I3 of the flash tube may all be formed as an integral casting or if desired, they may of course be formed oi separate parts suitably attached one to the other. The construction so formed, however, is adapted to be attached by suitable bolts I8 and lugs I9 to an underneath portion 20. which serves as a double conduit for supplying the air and gas mixture to the main and simmer burners, respectively.

From the drawing it will be noted that the main burner is supplied by means oi a relatively large duct 2i whereas the simmer burner is supplied with a smaller duct 22. both of which are preferably formed as anl integral conduit. These ducts are supplied by a suitable valve which is not here illustrated because it does not constitute a part of this invention.

The gas duct 22 for supplying the simmer burner has an upwardly extending neck 23 at its inner end which connects with the lower edge of the simmer burner head II and in effect, forms a continuation thereof. Similarly, the conduit 2i has upwardly extending terminal portions 2l which communicate with the previously mentioned openings in the bottom of the main burner so as to supply the required amount of gas mixture to the main burner.

The simmer burner is provided with burner openings 25 and also with a lighter port 26, which of course, if desired, may be in the form of a Jet as shown in the applicant's Patent No. 2,032,877. The under conduit construction is preferably provided with an extension bracket 2l having an eyelet 28 which receives the holding screw I8. Similar eyelets 28 and holding screws Il may be provided at other points in the circumference of the main burner such as those shown.

Burners of this type usually constitute an assembly of four burners' which are grouped around a pilot light in the manner represented in Figure 1, by the two rear burners of such an assembly. The pilot light in thisinstance, is shown as consisting of a gas pipe III and a housing II mounted by a suitable bracket 32 on the side of' the gas conduit pipes of the burner on the left hand side of Figure 1. It will be observed that the burner is so positioned in the assembly that lll iiashtube Il extendsradiallytromtheoenol-the burner in the direction o! the pilot tube it which forms acontinuationoftheiiashtube ilmaybeinsertedthereln 2.1 "lubejtl may be secured tube Il by any suitablemeans and may also be supported in a suitable cradle ll to prevent accidental displacement or breakage thereol. A

'.ihe inner end oi theash tube l! extends to a location adiacent the pilot light Ii so that when Ithe 'tubebecoms nlled with' gas from the lighter port 2l, the gas is ignitedtrom the pilot light and burns or ilashes back through the tube tothe lighter port It.

l'br the purpose of lighting the simmer burner iroin the back iiash referred to, an'opening Il is provided in the partition il at vthe location illustrated in Figure 2, that is to say, at the juncture of the partition Il with the side of the simmer burner directhr above the lighter port 2B. It will be observed that this opening by virtuey oi its placementis also adjacent certain of the simmer ports 2l in the simmer burden v In operation, a multiplel valve is provided to supply a mixture otgas and air to the conduits.

' 2| vand 22 and thus to the main and the simmer burner respectively. The valves may be ofany construction provided only that they permit the simmer burner toV be operated 'independently of the main burner. 'When the simmer burner is operated. the gas mixture passing in through i conduit I! passes upwardly through neck 13 and out through the simmer burner openings l5. The burner port 2l being'iocated directly opposite the inner end of the ilash tube i3 passes a vquantity o! thegas mixture into the iiash tube lI--JQy in amount suiiicient to cause the same to become .ignited by the pilot light 3i and to ash back to the location of the burner port 2t in the limited time required for good-performance in use. This dashing action causes a portion oi' the llame to pass upwardly through theopening III in the partition il and to immediately ignite the gas passing tronroutlet openings 25 oi the simmer burner. In this way, the simmer burner willi always become automatically and quickly ignited under all conditions of burner temperature and gas pressure such as will be encounteredin practical operation. In the burner here disclosed the main burner openings I! extendinwardiy and when the main burner is turned on` they are pre sented in such relationship to the simmer burner that the main burner will immediately become Time'important feature-oi.' this construction is the partition il, which is' provided with the openings il around the outer periphery thereof sewing to supply`an adequate quantity of secondary air to support combustion at the openings of the main and simmer burners. At the same time, the partition il provides a central disk por.

tion Il adjacent the simmer burner disposed in a horizontal plane-between the lighter port il and the simmer burner ports Il. The partition so disposed islound to, eii'ectively prevent the creation oi the unwanted drafts 'of air at a point adjacent the lighter port 2B. As a result, the gas passing out o! the lighter port 20 always across the space and into the mouth of the n'ash tube Ila-Ilm sumcient quantity to produce the au tic lighting oi' the simmer burner within the relatively short period o! time required i'or goed performance in operation.

1st, 42n u :sono that the-prevention er tu undesirable drafts -is particularly eiiectivewhen the partition is placed in ahoriaontal piane between the lighter port and the openings of the simmer burn-i er and that the same good results cannot be realised by placing'the partition below the lighter port 2l. Accordingly, the eiiective control ofthe upward drafts is not merely a matter of providing a barrier in the annular openingbut one of locating the partition between the lighter port and the simmer b er openings. x

Further, the o g Il must be provided oi sumcient. sise to permit the ilashing action to quickly ignite the simmer burner and at the same time be sumciently small to preventanyserious disturbance to the control of the drafts provided by the partition. L' Y From 4aninspecti n of Figure 2.itwillbe observed that this type oi burner admits or a conburner and carried thereby either as one piece or by' forming the burner in several pieces and mounting them to form a unitary structure of Athe type illustrated.

I claim:

i. A gas burner comprising a simmer burner and a main burner. separate means for supplying air and gasto each of said burners respectively. and an' air space between said simmer and main burners through which secondary air oi combustion ls supplied to at least one of said'burners. means for automatically igniting said simmer burner comprising a hash tube extending from a point adjacent a pilot light to a point in said air space and adjacent the simmer burner, a lighterfport in said simmer burner lor feeding gas to said iiash tube and a partition extending across said air space at a location adjacent said lighter port. 1

2. A gas burner comprising a simmer burner and a main burner, separate means for supplying air and gas to each of said burners respectively,

and an air space between said simmer and main burnercomprising a 'flash tube extending from s point unissent a puoi nent to s point i said space and adjacent the simmer burner.' a lighter port in said simmer burner for feeding gas to said flash tube and a partition extending across said air space and having means therein remote from the location of said lighter port for passing secondary air o! combustion.

v3. A gas burner comprising a simmer burner and a surrounding main burner,separate means for air and gas to each oi' said burners. respectively, and an air space between said simmer and main burners through'which secondary air of combustion is supplied to at least one oi said burners, said simmer burner having burner openings adjacent the top thereof. means ior automatically igniting said simmer burner from a pilot light comprising a iiash tube extending from a point exteriorly oi' the main burner-to a point opening ary air oi combustion disposed at a location rer moved from said lighter port.

LA gas burner comprising a simmer burner and a surrounding main burner. separate means for conveying air and gas to each oi' said'burners, respectively, and an air space between said simmer B and main burners through which secondary air of combustion is supplied to at least one ci said burners, said simmer burner having burner openings adjacent the top thereof, means for automatically igniting said simmer burner from a pilot ,l0 light comprising a iiash tube extending from a point exteriorly oi the main burner to a point in 5. A gas burner comprising a simmer burner' 2B and a surrounding main burner. separate means for conveying air and gas to each oi' said burners,

respectively. and an air space between said simmer and main burners through which secondary air oi combustion is supplied to said burners, said simmer burner having burner openings adjacent the top thereof, means for automatically igniting said simmer burner from a pilot light comprising a ash tube extending from a point exteriorly of the main burner to a point in said air space and 35 adjacent the simmer burner, a lighter port in said simmer burner below said burner openings for feeding gas to said flash tube and a partition extending across said air space in a horizontal plane above said lighter port and below said n simmer burner openings, a iiash opening in said partition between said lighter port and at least one of the openings o! said simmer burner, said main burner having burner4 openings extending inwardly adapted to be automatically lighted from s said simmer burner.

V6. A burner oi' the character described having a simmer burner and a main burner, means i'or CERTIFICATE Oli' CORRECTION.

supplying air and gas to said. simmer and main burners, and an air space between said burners for supplying secondary air of combustion to said simmer burner, means for automatically iighting said simmer burner comprising a flash tube having its inner end disposed in said air space and spaced from said simmer burner and a lighter port in said simmer burner for supplying gas to said tube, and means disposed between said lighter port and said burner openings for eliminating strong drafts of air in said air space between said lighter port and the inner end of said ash tube.

'1. A burner of the character described having a simmer burner and a main burner, means for supplying air and gas to said simmerand main burners, and an air space between said burners for supplying secondary air of combustion to said simmer burner, means for automatically lighting said simmer burnerl comprising a ilash tube having its inner end disposed in said air space and spaced from said simmer burner and a lighter port in said simmer burner for supplying gas to said tube, and means disposed between said lighter port and said burner openings for eliminating strong drafts ot air in said air space between. said lighter port and the inner end oi said flash tube. said means comprising a partition between said lighter port and said burner openings and having a flash openv ing therethrough.

8. A burner comprising a main annular burner, a central simmer burner Iand an annular air space between said burners, separate means for supplying air and gas to each of said burners respectively, a horizontal partition extending across the said annular air space, said simmer burner having burner openings above said partition, means for automatically lighting said simmer burner comprising a flash tube below said partition having its inner end adjacent but spaced from the side of said simmer burner and a lighter port below said partition adapted to feed gas into said iiash tube, an opening in said partition between said lighter port and at least one of said burner openings, and a further opening'in said partition removed from said iirst opening for passing secondary air of combustion. l

PHILIP S. HARPER.

may A2,' 1959.

PHILIP s. Baaren. r

It is hereby certifiedthat the above numbered `patent was erroneously issued tol'Philip lS. Harper, vof Chicago, Illinois, assigner, by direct and :scene assignnenlfs,l of one-fourth` to Carolyn LL Harperand one-fourthto ennp s. 4Harper.,tecn or chicago, Illinois, and ene-nur terhilip s. serper and Carolyn l., Harper as Trustees" whereas said patent should have `been f issud'to --lhilip Harper, of chicago Illinois, assigner, by direct and. meerde assigmnents, of one-fourth to Carolyn Lliarper and one-fourth to Philip Srliarper, kboth oi Chicago,V Illinois, and one-fourth to Philip S.` Harper and Carolyn I.- Harper; as Trustees, undone-fourth to Carolyn L.

" 'harper `sind Philip S'. Harper-,3ans Trustees, as shown'byA the record of ae-4 signnents in' this' office; and that the yseid Lettera Patent should'beread with this correction therein the seme may conform to the recprd \of the case inlthe Patent-Office.

sigma mi selles this 9th day or December,A A. D. 19in.

(Seal) Henry van Arsdale, Acting Commissioner of Patents.

LA gas burner comprising a simmer burner and a surrounding main burner. separate means for conveying air and gas to each oi' said'burners, respectively, and an air space between said simmer B and main burners through which secondary air of combustion is supplied to at least one ci said burners, said simmer burner having burner openings adjacent the top thereof, means for automatically igniting said simmer burner from a pilot ,l0 light comprising a iiash tube extending from a point exteriorly oi the main burner to a point in 5. A gas burner comprising a simmer burner' 2B and a surrounding main burner. separate means for conveying air and gas to each oi' said burners,

respectively. and an air space between said simmer and main burners through which secondary air oi combustion is supplied to said burners, said simmer burner having burner openings adjacent the top thereof, means for automatically igniting said simmer burner from a pilot light comprising a ash tube extending from a point exteriorly of the main burner to a point in said air space and 35 adjacent the simmer burner, a lighter port in said simmer burner below said burner openings for feeding gas to said flash tube and a partition extending across said air space in a horizontal plane above said lighter port and below said n simmer burner openings, a iiash opening in said partition between said lighter port and at least one of the openings o! said simmer burner, said main burner having burner4 openings extending inwardly adapted to be automatically lighted from s said simmer burner.

V6. A burner oi' the character described having a simmer burner and a main burner, means i'or CERTIFICATE Oli' CORRECTION.

supplying air and gas to said. simmer and main burners, and an air space between said burners for supplying secondary air of combustion to said simmer burner, means for automatically iighting said simmer burner comprising a flash tube having its inner end disposed in said air space and spaced from said simmer burner and a lighter port in said simmer burner for supplying gas to said tube, and means disposed between said lighter port and said burner openings for eliminating strong drafts of air in said air space between said lighter port and the inner end of said ash tube.

'1. A burner of the character described having a simmer burner and a main burner, means for supplying air and gas to said simmerand main burners, and an air space between said burners for supplying secondary air of combustion to said simmer burner, means for automatically lighting said simmer burnerl comprising a ilash tube having its inner end disposed in said air space and spaced from said simmer burner and a lighter port in said simmer burner for supplying gas to said tube, and means disposed between said lighter port and said burner openings for eliminating strong drafts ot air in said air space between. said lighter port and the inner end oi said flash tube. said means comprising a partition between said lighter port and said burner openings and having a flash openv ing therethrough.

8. A burner comprising a main annular burner, a central simmer burner Iand an annular air space between said burners, separate means for supplying air and gas to each of said burners respectively, a horizontal partition extending across the said annular air space, said simmer burner having burner openings above said partition, means for automatically lighting said simmer burner comprising a flash tube below said partition having its inner end adjacent but spaced from the side of said simmer burner and a lighter port below said partition adapted to feed gas into said iiash tube, an opening in said partition between said lighter port and at least one of said burner openings, and a further opening'in said partition removed from said iirst opening for passing secondary air of combustion. l

PHILIP S. HARPER.

may A2,' 1959.

PHILIP s. Baaren. r

It is hereby certifiedthat the above numbered `patent was erroneously issued tol'Philip lS. Harper, vof Chicago, Illinois, assigner, by direct and :scene assignnenlfs,l of one-fourth` to Carolyn LL Harperand one-fourthto ennp s. 4Harper.,tecn or chicago, Illinois, and ene-nur terhilip s. serper and Carolyn l., Harper as Trustees" whereas said patent should have `been f issud'to --lhilip Harper, of chicago Illinois, assigner, by direct and. meerde assigmnents, of one-fourth to Carolyn Lliarper and one-fourth to Philip Srliarper, kboth oi Chicago,V Illinois, and one-fourth to Philip S.` Harper and Carolyn I.- Harper; as Trustees, undone-fourth to Carolyn L.

" 'harper `sind Philip S'. Harper-,3ans Trustees, as shown'byA the record of ae-4 signnents in' this' office; and that the yseid Lettera Patent should'beread with this correction therein the seme may conform to the recprd \of the case inlthe Patent-Office.

sigma mi selles this 9th day or December,A A. D. 19in.

(Seal) Henry van Arsdale, Acting Commissioner of Patents.

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