US1968561A - Igniter for gas burners - Google Patents

Description

July-31, 1934.

o. J. LEINS 1,968,561

IGNITER FOR GAS BURNERS Filed March 12, 1952 2 Sheets-Sheet 1 7 77200260"; Ufa/ .1869026 Jul 31, 1934.

O. J. LEINS IGN ITER FOR GAS BURNERS Filed March 12, 1952 2 Sheets-She't 2 QWXM wm l dflfgi means for separately andindependently adjusting Patented July 31, 1934 s: ims PATENT OFFICE 1,968,561 IGNITERlFOIt GAS nUaN as 7 Oscar J'. Leins, Milwaukee, Wis; assignor to Milwaukee Gas Specialty Company; Milwaukee, I Wis.,a corporation of Wisconsin g j Application March 12, 1932, Serial No. 598,319, 1': Claims. 01; 158-115) My invention relates to igniters for gas burners and contemplates an' improvement for furnishing ignition for both the top burners and the oven burnerof a gas range. l

Heretofore in theart considerable difiiculty has been "encountered in providing ignition for the oven burner of a 'gas range. Attempts'havebeen made to employ gravity type lighters for this purpose, but such devices as "have been provided along this line have not been dependable. Other attempts have encountered difiiculty" in controlling either thesize of the pilot or-the length: of the ignition flashes; f 'My invention provides a lighter devicewh ich will furnish ignition for both the top burners and the oven burner without difficulty in controlling either the'size of the pilot flames or the length of the ignition flashes.

My invention further provides a device which is simple in construction and dependable in operation and in whichthe parts of the device maybe assembled in rare-correlated relation and installed as'a unit assembly.

1 The embodiment'of the invention selected for illustration comprises a valve housing having means for connection with the gas manifold of the range or with anyother suitable or-preferred source of fuel supply. O'ne lighter tube extends from this housing and has-a tip in proximity to the top burners, and a second lighter orignite'r tube extends from this housing and has a tip in proximity to the oven burner. By-pass means i's'provided in this housing for supplying thegas for maintaining a small pilot flame at the tip of each lighter tube, and valve means of the type injwhich the valve elements are operated by manual depression against springs are provided for eiifecting the flow of a considerably increased amount of gas to either lighter tube; forthe purpose of projecting the flame fromthe tip'or torch head at the outer end of one tube to the top burners and. from the tipor torch head at the outer end of the other tube to the oven burner. "The by-passes are preferably provided with the same for the purpose of separately and independently adjusting the small. pilot flame for the top burners and the small pilot name for the ably is provided with means I separating the increased gas supply for the top burner igniter from the increased gas supplyior theoven burneroven burner, and the valve housing also prefer independently arranged to conform with. their respective requirements. e

The igniter device in its entirety and its' combination with the top burners, oven burner and gas manifold or other source of fuelsupply, is an important aspect of my invention; and the valve device and the combination of the lighter tubes, valve members and by-passes therewith are further aspects of the invention.

The igniter of my present invention works satisfactorily with natural gas, but it is to be understood, of course, that the invention is not limited to use with any particular fuel, nor is it limited to use with the particular burner arrangement illustrated and described.

Myinvention is illustrated in the accompany ing drawings, inwhich:

Figure l is a fragmentary top plan view of an ordinary type of gas range, showing one embodi-- ment of my invention; v

Figure 2 is an enlarged view of the pilot means shown in Figure 1;

Figure 3 is a sectional view taken substantially on the line 3--3 of Figure 1;

Figure 4 is a side elevational view showing the general construction of the valve means;

Figure 5 is a sectional view taken substantially on the line 55 of Figure '4;

Figure 6 is a top plan view, partly in section, showing another embodiment ofmy valve control- 35 ling mechanismi V Figure 7 is a fragmentary plan view showing in elevation the valve control mechanism shown in Figure 6; I V

' Figure 8 is a sectional view taken substantially along the line 88 of Figure 7;

' Figure 9 is a sectional view taken substantially on the line 9-9 of Figure 6; and

Figure 10 is a fragmentary vertical section taken on the line 10- 10 of Figure 2 with the adjacent tip and connected tube in elevation;

Referring to Figures 1 to 4, inclusive, which illustrate one embodiment of my device, the-usual fuel supply pipe 11 is shown in connection therewith and has the manifold portion 12 which usually extends along the front of the range and is connected with the opentopburners 13. These top burners 13 areprovided with connected tubes 14 into which the nozzle pipes leading from the manifold 12 discharge, as well understood in the art. Air is admitted to the outer ends of the tubes 14 at 15 and the nozzle pipes are provided with the usual control valves 16. y l J An oven17 is shown imposition to the right of the burners 13 and is separated therefrom by the fold 12 has a cap 23 threaded over and closing its end as shown.

Positioned centrally of the burner 13 is the customary torch head 24 for the open or top burn: ers 13. This torch head comprises a protecting hood 25 positioned over the tip 24a threadedupon the upturned outer end of the lighter tube 26 which is connected at its opposite end to the gas manifold 12 and supplies the pilot maintaining and flashing quantities of gas to the tip 24a.

The tip 24:; may be of the type suitable for use with ordinary water gas, ormay be ,of the relay pilot type with a. special casing and tip for use with a natural gas supply. The tip shown isior natural gas and has eight orifices 24b, one directed. toward each of the four burnerslB .with four additional orifices, one above .each of the first four main orifices to insure ignition of the gas issuing from the main orifices and the return of the flames to the pilot tip so that they will burn in a unopilot;

Positioned below the tube or conduit 26 is a second conduit 27 which is'bent as shown in the drawings and passes beneath the burner conduits 14 and through the oven wall 18 intoappropriate proximity to the oven burner 19. The tube 27 terminates in a tip 28, similar to the tip 24 ex cept that it needs only a single outlet orifice 27a opening from the end of the tip and directed toward the oven burner 19. l The manifold 12 has a tapped opening through its lower side as shown by reference numeral 29, and the threaded'nipple 30 of the valve housing 31 is threaded thereinto. The valve housing 31 has threaded into'it the two lighter tubes 26 and 27 leading to the open burner lighter tip 24 and oven burner lighter tip 28, respectively. -A channel 32 in the valve housing 3,1, is closed at one-end by a plug 33 threaded into the end thereof. The other 5 endof the channel 32 opens into an obliquely cut channel 34 leading from the interior of the gas manifold 12. I

Valve openings 35 and 36- enter at right angles into the channel 32 and open from the outer side of the valve housing 31. An outlet channel .37 is formed as shown in the valve housing 31 and commun'icates by means ofchannels 38 and 39 with the outlets 40 and 41 into which are threaded the tubes 26 and 27. Suitable blocking means, such as the plug 42, is disposed between outlets 38and 39 to prevent communication .therebetween. A plug'43 closes the outer end of the channel 37.

The openings 35 and 36 are tapped and thread-- ed into these openings are a pair of threaded sleeve members 44 and 45; The plunger members 47 extend through the interior 46 of the sleeve members 44 and 45 and terminate in hemispherically-enlarged portions 48 adapted to have seating engagement with the ends o-f-the sleeve members 44' and 36.

Each sleeve member 44 and 45 has an inwardly projecting annular flange 51, which forms a guide for the plunger member 47, and a washer 52 is adapted to fit around the plunger and bear against this annular flange 51, as best shown in Figure 3. A spring member 53 is positioned between-each washer or packing 52 and each button 49 for normally holding the plunger in closed position as shown in Figure 3, and for pressing the washers or packing material at 52 tightly against the flange 51 and around the plunger 47 to seal, against gas leakage, the opening through which the plunger projects.

A by-pass 54 leads from the opening 35 to the channel 37 on one side of the block 42 and a similar by pass leads from the opening 36 to the channel 37 on the opposite side of the block 42 for maintaining the-restricted pilot fiame at the tip 28 of the oven lighter. These by-pass arrangements are identical so that a description of one inconnection with Figure 5 will suflice for both. The by-pass passage has an enlarged portion,55,'which is-adapted to be threaded interiorly to receive an adjusting screw 56. The adjusting screw 56. has a tapered end adapted to limit the effective areaof the by-pass 54. The screw 56 is provided with a slotted head 57 for adjusting thescrew into proper position. It is understood that one by-pass places the manifold 12 in restricted communication with the tube 26 and around one valve 48 and that the other by-pass places the manifold in'restricted communication with the tube 27 around the other valve 48, manipulation of one screw 57 adjusting the size of the pilot flame maintained at the tip 24a and manipulation of the other screw 57 adjusting the sizeof the pilot flame maintained at the tip 28.

With the parts installed as shown the by-pass around the valve 48 for the tube 26 provides a flow of fuel sufiicientto maintain a relatively restricted pilot flame at the tip 24a, and the restricted bypassaroundthe valve 48 for the tube 27 provides a restricted flow of fuel for maintaining a restricted pilot flame at the tip 28 .of the oven lighter. When a top burner 13 is to be ignited, its gas cook 16 is opened and the button 49 for the valve associated with the tube 26 is depressed to admit the flow of a greatly increased quantity of gas through the passage. 34, the interior of the sleeve 44 and out through port. 44a and through passage 37 to the tube 26. This causes the pilot flames at 100 to be projected radially outwardly, through the openings 101 in the hood 25, far enough to ignite the particular burner 13 to which gas has been admitted- 7 Similarly the by-pass around the valve 48 101 the tube 27-permits the flow of a relatively restricted quantity of gas around the closed valve 48and to the tube 27 for the purpose of maintaining the relatively restricted pilot flame at the tip 28 of the oven lighter. When the burner 19 is to be ignited, its gas cock 22 is opened and the button 49 forthe valve for the tube 27 is depressed to admit the fiow of the greatly increased quantity of gas from the passage 32 through the inner end of the sleeve 45 and through the port 45a opening laterally from this sleeve into; the passage 37 and to the tube 27. This causes the pilot flame at the tip 28 to be projected at 102 far enough to ignite the-oven burner 19 to which integral or constituting a unitaryasseinblywith the top burnerignition arrangement,'-.the"re spective parts may be combined in pre-correlated relation and distributed and installed in unitary assembled relation simply, expeditiouslyrand with a minimum of alteration in'existing equipment.

Referring now to the embodiment shown in Figures 6 to 9, inclusivethefmain distinction betweenthis embodiment and that shown: in Figures 1' to 5 isfthe horizontal positioning of the valve housing. The valve housing 31 "of Figurei 2 :is adapted to extend vertically downwardly from the gas manifold 12. 'Intthe embodiment-shown.

in Figures 6 to 9, the valve housing member 60 is adapted to extend horizontallyparallel to the? gas:

manifold 12. This valve can also bei'designated as a twin valve, inasmuchastit' supplies *theftwo lighters previously described. 'JAsshow'n in Fig ure 6, thepilot lighter for the top burners 13.0f the oven is indicated at 24', thispilotlighter being surmountedby a hood 25". 'A gas conduit 26 leads from thefvalve 60 to thetip of the lighter.

24'; The oven pilot lighter 28' has a conduit 27. leading from the valve, body 60 to the tip of the lighter 28' and connected thereto andentering the valve 60. The twoinletopenings-Gl and 62, associated with the. conduitmembers 26- and 2'7, open into two corresponding outletch'annels 63 and 64 disposed longitudinally in the valve body 60. These two channels are preferably closed-at their ends by means of suitable plugs 65 secured therein. 2 I ,.J-

A nipple member 66 is provided for connecting the valve bodyf60 to the gas manifold 12-. As shown in Figure 9, this nipple is threaded into an opening 67 in gas manifold 12 and into a tapped inlet opening 68 in the valve body 60.. vThenipple 66 is provided with a hexagonal flange 69-for permitting it to be tightly threaded into place. i The nipple 66 is provided with a central longitudinal inlet opening '70 extending therethrough and providing communication between the inlet port 68 of the valve body 60 and the interior of the gas manifold 12.

An inlet channel '71, as shown in dotted lines in Figure 6, is formed in the valve body 60 and preferably is sealed at its end by means of a bushing member 72 (Figure 6). Tapped openings 73 communicate between inlet channel '71 and outlet channels 63 and 64. Sleeve members '74, as shown in Figure 6, are threaded into the openings '73, and are provided with cooperating ports '75 for communicating with the outlet channels 63 and 64. The sleeve members '74 are provided with hexagonal heads '76 for tightly threading them into position. A recess '76, as shown in Figure 6, is provided in the sleeve members 74, and terminates in an inwardly projecting annular flange '77, adapted to serve as a guide for a plunger member '78 mounted in the sleeve members '74. Each plunger member '78 is provided at its inner end with an enlarged head '79 adapted to seat on the end of the sleeve member '74 for closing the same against passage of the lighter flashing supply of gas therethrough. The outer ends of the plunger members '78 are threaded for receiving control buttons adapted to be secured thereon.

Mounted within the recess in the sleeve members '74 is a spring 81 adapted to normally hold the enlarged head '79 of the plunger members '78 in closed position against the inner end of the sleeve members '74. A washer or packing 82 is provided for restraining the other end of this spring and forsealing the opening through which the corresponding plunger '78 passes. l l Aby-pass passage 83, as shown in Figure 8,is provided between the inlet channel r71 and each outlet channel 63 and 64. Each of these by-pass passages hasan'enlarged end 84 for receiving a threaded adjusting screw 85. The adjusting screw is tapered at its inner portion for the purpose of limiting the effective area of the byI-pass 83, and is provided with atslotted head 86 for adjustment thereof. By controlling the position ofthe'adjusting screw 85, it is possible to determine the flow.:of gas from the gas manifold 12 through the port '70 in the connecting nipple .66 andrthrough the inlet opening '71 to the outlet openings or channels 63 and64 for the proper operation of the pilots 24 and 28.. The plunger means '78 are adapted tobe depressed when it is desired'to cause'flashing of either of the pilots24 or 28 the enlarged. head '79 of theseplunger members being pushed away from the seat at the inner end of the sleeve member '74 and permitting. gas to pass from the inlet channel '71 to the out.- letchannels 63 and 64 and thence through the conduits 26' and 27 to the torch head to project the lighting flames from the respective torch heads as described in connection with the pre-..

ceding embodiment. It can readily be seen that I have thus provided a rugged and simple valve body construc-. tion which permits separate control of either or any of a plurality of pilot torch heads, and which is adapted to be mounted upon any type of gas, stove. Also, I have illustrated a valve body which can bemounted either horizontally or vertically, depending upon the situation of the gas manifold and'the amount of space that is provided.

I I do not intend to be limited to the exact details shown and described, but only insofar as defined by the spirit and scope of the appended claims. r

1 1. The combination with a. plurality of. top, burners, an oven burner and a gas manifold, of a valve housing having means for connection with said manifold, a first lighter tube extending from said housing and having a tip in proximity to the top burners, a second lighter tube extending from said housing independently of the extension of said first lighter tube from said housing and having a tip in proximity to the oven burner, said housing having inlet passage means communicating with said gas manifold and separate outlet passages for separately connecting the first and second lighter tubes to said inlet passage means, and separately operated fiash valve members mounted in said valve housing for separately placing the outlet passages in communication with said inlet passage means to cause increased supplies of gas to said lighter tubes.

2. The combination with a plurality of top burners, an oven burner and a gas manifold, of a valve housing having means for connection with said manifold, a first lighter tube extending from said housing and having a tip in proximity to the top burners, a second lighter tube extending from said housing independently of the extension of said first lighter tube from said housing and having a tip in proximity to the oven burner, said housing having inlet passage means communicating with said gas manifold and separate outlet passages for separately connecting the first and second lighter tubes to said inlet passage means, separately operated flash valve members mounted in said .valve housing for separately ret placing ':the outlet. "passages: in communication with said inlet passage-means to cause increased supplies of gas tosaid lighter tubessaid housing having means-permitting a, restricted supply of gas around. one of saidvalve members and to oneof said lighter tubes; and separate means for permitting a restricted supply of gas around the other :valve member and to the other lighter tube. 3; The-combination, with a plurality of top burners, an'oven burner and a gas-manifold, of a; valve housing having means for connection with said manifold, a first lighter tube extending from said housing and having a-tip in proximity to thestop burners, a second lighter tube extending from said housing independently of the extenew sion. of said first lighter tube from said housing and having a tip inv proximity to the oven burner, said housing having inlet passage means communicating with said gas manifold and separate outlet passages for separately connecting the first and second lighter tubes to said inlet passage means, separately operated flash valve members mounted in said valve housingfor separately placing the outlet passages in communication with said'inlettpassage means to cause increased supplies of gas to said lighter tubes, said housing having by-pass means permitting a restricted supply of gas around one of said valve members and ,to one of said lighter tubes, separate by-pass m'eans-"forpermitting a restricted supply ofv gas around the other valve member and to the other lighter'tube, and means for independently adjusting said by-pass means.

4'. A valve: housing having an inlet port, a plurality of outlet ports, a plurality of openings in communicationwith said inlet port, each of said openings being adapted for communication with its respective outlet port, plungervalve means positioned in-each of said openings and adapted to control communication between said inlet port and the respective outlet ports, a plurality of by-passes, one around each of said valves and one leading from said inlet port to each of said outlet ports, and adjusting means 'for regulating the efiectiveareas of said by-passes. w i 5, In-combinatiomin a valve, a 'valve'body, an inlet channel-extending therein, anoutlet. channel in said'body, said body having a plurality of outlet openings leading into said outlet chan-' nel,. a plurality of control openings tapped between said inlet and outlet channels, said con'-., trol openings corresponding to and associated with said outlet openings, flow control means positioned in said control openings, "a plurality of by-passes leading from said inlet to said outlet channels corresponding to and associated with said control openings, and adjusting means for limiting the efiec'tive area of said lay-passes, 6; In combination, in a valve, a valve body, an inletchannel extending therein, an outlet channellin said body extending longitudinally thereof, said valve body having an outlet opening tapped into said outlet channel and a control opening tapped between said inlet and out-. let channels, a second outlet opening tapped into said outlet channel, means positioned in said channel forlblocking connection between said outlet openings, an associated control opening for said second outlet opening, flow control means positioned in said control openings for control-. ling the flow of fuel through said openings, and separate restricted by-passes between said inlet channel and said outlet openings.

7; 'In' combination, a gas manifold, a unitary valve housing having an inlet port directly connected-to said manifold, 'a plurality of separate outlet ports for said housing, said housing having separate openings leading from said inlet port to each ofsaid outlet ports, an individually operable valve member disposed in each of said openings for controlling communication between said inlet port and each of said outlet ports, and separate restricted by-passes between said inlet port and each of said outlet ports. 1

OSCAR} J. LEINS.

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