US2083602A

US2083602A - Gas burner assembly

Info

Publication number: US2083602A
Application number: US96938A
Authority: US
Inventors: Philip S Harper
Original assignee: Individual
Current assignee: Individual
Priority date: 1936-08-20
Filing date: 1936-08-20
Publication date: 1937-06-15
Anticipated expiration: 1954-06-15

Description

June 15, 1937. A P, s, HARPER 2,083,602

GAS BURNER ASSEMBLY Filed Aug. 20, 1956 2 Sheets-Sheet 1 @if f@ y June l5, 1937. P. s. HARPER v 2,083,602

' GAS BURNER ASSEMBLY Filed Aug. 2o. 19:56 '2 Asham-sheet 2 l si n "unulmlmu im djd/P2K' Patented June l5, 1937 UNITED STATES PATENT OFFICE aosasoa GAS BURNER ASSEMBLY Philip S. Harper, Chicago, Ill. Application August 20, 1936, Serial No. 96,938

and particularly to a top burner assembly of thetype, used in kitchen ranges in which a central simmer burner is `placed within the area of a centrai hole through a large main burner.

The invention consists of a new and improved double burner construction which enables quick and positive ignition of an outer annular main burner from a centrally located simmer burner without sacrificing desirable operating characteristics and design features of either burner.

The-type of burner shown has a central section forming a simmer burner and an outer main burner section enclosing an annular burner chamber and surrounding thev simmer burner. The simmer section is spaced from the annular main burner section to allow free access of Isecondary air to the simmer burner. This general type of burner has been developed to the point where the industry has accepted its value and the double burner principle is coming increasingly into popular use. My co-pending application Serial No. 709,449, shows this general double burner construction. It has come to be well recognized in the art that the simmer burner should be centrally located beneath the cooking vessel and hence centrally located within the area ofthe main burner. Also the simmer burner must be directly ignited from the pilot light because this burner attirnes functions independently of the main burner. 'I'he main burner may light from the pilot light but also may light from the simmer section because the simmer burner is always burning when the main burner is in operation. Preferably the main burner should light from the simmer burner because of its proximity thereto and because ignition of an additional burner section from the common pilot light would cause ignition difficulties. There ls a limit to the 40 number of burners which can be ignited from the common pilot. y Y

Thus, from the standpoint of sound design, it is practically determined that the main burner should be ignited from the centrally located.

simmer burner. 'I'his result has 4heen eiectively accomplished byv constructing the burners as shown in my copending application Serial No. 709,449. However, the burner shown therein is not sufficiently flexible in design. Theports have to be arranged substantially as shown and have to be located very close to certain definite levels and the central portion must be cone-shaped in order that proper results are secured.

In the former construction in order to obtain positive lighting, the main burnerports were ypleasing in appearance.

slotted with the top wall of the slot extending upward at a 45 angle. This particular form oi burner port facilitates lighting by imparting a curling action to the gas issuing from the ports. The gas iiows upward and curls inward over the 5 top of the burner to a point where it readily ignites from the simmer burner. In order to have positive lighting of the main burner the ports were formed in the manner described and also it was found'that the outer main burner ports had to be 10 located at a high level relative to the simmer burner ports.- While this arrangement is very conducive to rapid ignition, eiiiciency and capacity of the burner have been sacriiiced and also the manufacture is expensive. l5

The burner disclosed herein is an improvement over the construction shown in application Serial .No. 709,449 in that certain desirable features can be and are incorporated in this burner which are not obtainable in the former construction. For 20 instance, in the development of single burners it has been found that in ring shaped burners it is advantageous to have the ports drilled horizontally not only because of appearance and nonclogging properties, but also because of the in- 25 creased emciency of the burner at both high and low rates of iuelconsumption.

Heretofore, no one has eiectively designed a double burner employing the valuable principle of having horizontally discharging ports in the 30 outer .main burner for the reason that a main burner so constructed will not ignite from a centrally located simmer burner. My invention makes possible the manufacture of such a burner and also makes possible further leeway in the 35 design of double burners, and provides means whereby the outer main burner is automatically ignited from the simmer burner.

An object of this invention is the manufacture of a double burner in which greater eiiiciency in 4o the consumption of fuel is attained.

A second object oi' this invention is the manufacture of a double burner in which economy of operation is accomplished and which is also 45 A further object of this invention is the manufacture of a double burner having a high eiiiciency and a large capacity while at the same time holding the diameter of the burner within practical w dimensional limits. k

An object of this invention -is to construct a double burner in which the main burner is directly and positively ignited from the simmer burner without the necessity of a particular location and 55 direction of the main burner ports relative to the simmer burner ports.

A further object of this invention is an economical double burner construction.

These and other objects will be more apparent from the drawings, in whichi Figure 1 is a plan view showing a four-burner assembly;

Figure 2 is a side elevation of the four-burner assembly; l l

Figure 3 is a partial section on line 3-3 of Figure 1;

Figure 4 is a partial section on line 4-4 of Figure l; and

Figures 5 and 6 show a modified form ci the burner shown in Figures 1 to 4.

Referring now to the drawings, Figures l to 4 show the preferred form of my invention. Gas valves numbered I I are mounted in a gas supply manifold I2 and each valve has two orifice caps I3 and I4 disposed one above the other and providing for discharge of gas.

The burners are made of individual burner heads I5 bolted or otherwise secured to castings I6 and I1 which contain mixing Itubes therein for the purpose of properly mixing air and gas before ignition at the burner ports. Castings I6 and I1 are supported at one end by means of a strap I8 and are located in a stove by means of pins I9, I9 which drop into holes in the strap I6. The other end of castings I6 and I1 rest on the orifice caps I3 and I4 of the'individual valves II.

Referring to the individual burners, the burner head I5 forms the-upper closure for both the simmer burner chamber 2-I and the annular main burner chamber 22. 'head enclosing the simmer burner chamber is substantially cylindrical as shown, with the top closed and burner ports 23 extend through the top closing wall. A single lighter port 24 is drilled through the side cylindrical Wall of the simmer burner. The vportion of the burner head enclosing the main burner is annular and channel-shaped in cross section and is spaced from the simmer. burner portion, being connected thereto by means of the horizontally disposed flatY portion 25. The flat portion 25 is located above the lighter port 24 of the simmer burner and forms a baiile restricting the upward draft of air. A small hole 26 is cast in the iiat portion to allow iiashing from the lighter port 24 to the simmer burner ports 23 in ignition of the simmer burner.

Considering the burner head, the main burner portion has a series of horizontally directed ports 20 drilled through the outer cylindrical walls. A i'lash tube 21 is pressed through both inside and outside cylindrical w'alls. The inner opening of the ash'tube is located opposite the lighter pilot in the simmer section so that gas issuing from' the lighter port will enter the flash tube and travel down the tube toward the pilot light head 28' located at the other end thereof. A second tube 29 disposed above the flat portion 25 and op'en at both ends passes through both cylindrical walls of the-annular main burner portion. A port 30 is drilled through the wall of this tube allowing flow of gas from the main burner chamber 22 into the tube 29. y

The cast-iron portion forms the lower closure for both the Simmer burner chamber and the main burn'er chamber and has therein a mixing tube 3| o'f proper design for discharging the correct combustible air-gas mixture into the The portion of the burner simmer burner is turned on gas from the-lighter port 24 travels down the flash tube 21 to a flame burning at the pilot head where the gas is ignited. Then the flame travels back to the port and upward through the opening 26 to the simmer burner ports. When gas is directed to the main burner, gas discharges from the port 30 into the tube 29. The gas lls the tube 29 and ignites at the end adjacent the simmer burner and.

thence the flame travels outward through the tube, flashing up to the main burnerports and igniting the main burner. The gas issuing from port 30 continues to burn after ignition and as long as the main burner is in operation.

Figures 5 and 6 show a modified form of the invention operating on the same principle and fully within the scope of this invention. In this modied form the burner head differs slightly in shapeand the port 35 is drilled in a small fitting 36 which is screwed into the extension 31 of the main burner portion of the burner head. The port 35 is placed adjacent the opening at the outer end of the tube and discharges into the tube 38 toward the simmer burner. After ignition at the end of the tube near the simmer 'burner the llame travels back through the tube to the main burner. Thus it is seen that gas can be discharged into the tube from the main burner either through the wall of the tube as shown in the first type or from one end of the tube as shown in the second type. The principle o! operation is the same in either case. The modified form shown in Figures 5 and 6 requires proper proportioning and design of the port 35 to reduce the velocity of gas flowing down the tube 38.

Thus from the description and the drawings it can be seen that an improved form of double burner has been devised which provides instant and positive inter-ignition between the main burner and the simmer burner, and which allows more leeway in design of both burners and in the arrangement of the burners relative to each other, and which furthermore can be practically and easily manufactured While I have described more or less precisely the details of construction, 1 do not wish to be understood as limiting myself thereto, as I contemplate changes in form and the proportion of parts and thesubstitution of equivalents as circumstances may suggest or render expedient without departing from the spirit or scope of the appended claims.

I claim.:

1. A gas burner having a simmer section with means for supplying fuel and air thereto, means for igniting said simmer section, said burner also having a main burner section surrounding the simmer section, said main burner section having separate means for supplying fuel and air thereto, said simmer section having burner ports therein, and said main burner section having burner ports therein, said main burner section having a tube extending therethreugh with an opening at the inner end adjacent at least one of the ports of the simmer section and an opening at the outer endv adjacent at least one of the ports of the main burner section,'said tube having a port extending through the tube'wall and allowing. for issuance of gas from the main burner section into the tube. i

2. A gas burner having a simmer section with means for supplying fuel and air thereto, means for igniting said simmer section, said burner also having a main burner section surrounding the simmer section, said' main burner section having separate means for supplying fuel and air thereto, said simmer section having burner ports therein, and said main burner section having Aburner ports therein, said main burner section having a tube extending therethrough with an opening at the inner c nd adjacent at least one .of the ports of the simmer section and an opening at the outer end adjacent at least one of the ports of the main burner section, and means 20 whereby gas is causedto enter said tube.

3. A gas burner comprising a main section having an opening therethrough and a simmer section positioned in the opening in the main section having burner ports therein, means whereby 25 fuel and air are supplied to each of said sections, means whereby said simmer section is ignited, the main section having an inner and an outer wall, said outer wall having burner ports there through discharging at least partially outward, a 30 tube extending through the walls of said main burner section, one end of which is adjacent at least one burner port of said simmer section and the other end of which is adjacent at least one burner port of the s'aid vmain section; and means whereby gas is caused to enter the said tube.

4. A gas burner comprising a main section of -annular form and a simmer section within the main section having burner ports therein, means whereby fuelland air are supplied to each of said sections, means'whereby saidl simmer section is ignited, the main section having an inner and an outer wall, said outer Wall having burner ports therethrough discharging at least partially outward, a tube extending through the walls of said main burner-section, one end of which is adjacent at least one burner port of -said simmer section and the other end of which is adjacent at least one burner port of the said main section,

CAA

said tube having a port therein in communication with the main burner chamber.

5. A gas burner comprising a simmer section with means for supplying fuel and-air thereto, anda main burner section surrounding the simmer section, said main burner section having means for supplying fuel and air thereto, means whereby said simmer section is ignited, the main section having an Yinner and an outer wall, said outer wall having burner ports therethrough discharging at least partially outward, a tube extending through the walls of said main burner section, one end of which is adjacent one burner port of said simmer section and the other end of which is adjacent at least one burner port of the said main section, and an extension member having -a port therein adapted to direct gas into said tube.

6. A double burner for domestic gas ranges comprising, in combination, an outer burner section having burner ports therein, an inner burner section having burner ports thereinfthe burner ports in the outer burner and the inner burner being out of lighting proximity to each other, means whereby fuel and air are supplied to each of said burners, and a tube extending through the outer burner, one end'of which is in lighting proximity to at least one burner port of the inner burner and the other end of which is in lighting. proximity to atleast one burner port of said outer burner, and means whereby fuel is supplied to said tube.

7. A double burner for domestic gas ranges K comprising, in combination, an outer burner section having burner ports therein, an linner burner section having burner ports therein, the burner ports in the outer burner and'the inner burner being out of lighting proximity to each other, means whereby fuel and air are supplied to each of said burners, and a tube extending through the outer burner section, the inner end of which is in lighting. proximity to at least one of the ports of the said inner section and the outer end of which is in lighting proximity to at least one of the ports of said outer section, the tube having a port therein in communication with the chamber of the outer burner section.

PHILIP S. HARPER.