US1923394A - Gas burner - Google Patents

Description

G. E. PICKUP Aug. 22, 1933.:

GAS BURNER Filed Feb. 17, 1932 Pic/(up (Jigs.

Geor

Patented Aug. 22, 1933 GAS BURNER George E. Pickup, Newark, Ohio, assignor to The Wehrle Company, Newark, Ohio, a Corporation of Ohio Application February 17, 1932. Serial No. 593,481 4 Claims. (Cl.158-116)- The invention relates generally to gas burners and more particularly to such burners adapted for use in cooking stoves.

The primary object of the invention is to provide a new and improved burner of comparatively small size, which is eflicient in operation and economical of construction.

Another object is to provide such a burner constructed to avoid clogging of the fuel discharge ports and adapted to be easily cleaned.

Other objects and advantages will become apparent from the following description taken in connection with the accompanying drawing which illustrates a preferred embodiment of the invention and in which:

Figure 1 is a vertical sectional view taken longitudinally through a burner structure embodying the features of the invention.

Fig. 2 is an end elevational view of the burner shown in Fig. 1.

Fig. 3 is a plan view of the structure shown in Fig. 1 with the burner head removed to show the interior construction.

Fig. 4 is a bottom plan view of the removable burner head.

In the preferred form chosen for disclosure the invention is embodied in a burner structure having an elongated mixing tube 10 with an enlarged open outer end 11 into which a mixture of gas and air is discharged in a conventional manner to supply a burner 12 carried on and communicating with the other or inner end of the mixing tube 10.

The burner 12 is arranged to discharge the fuel mixture substantially horizontally, preferably with a slight. upward inclination, from an annularly arranged series of radially directed discharge ports 13 so that the flame beneath a cooking vessel assumes substantially the form o an inverted frusto-conical ring.

The ports 13 are supplied with fuel from a distributing chamber 14 communicating with the mixing tube 10 and formed by an annular wall 15 which constitutes a part of the burner 12 and projects upwardly at the inner end of the mixing tube 10. The upper wall of the chamber 14 is formed by a. burner head 16 engaging the upper edge of the wall 15. To define the ports 13, the head 16 has a flange 17 depending from its outer edge and having spaced radial slots of uniform width cut therein .as shown in Figs. 1 and 4. When the flange 17 rests upon the upper edge of the wall 15, the ports 13 are fully defined. In the form illustrated the mixing tube 10 extends beneath the distributing chamber 14 and has a reverse bend or goose neck formed therein by an upwardly and outwardly curved wall 18 which at its upper extremity extends in a reverse direction toward the end 11 of the tube. and merges with the wall 15 of the chamber 14. Thus the mixing tube 10, which is of gradually increasing cross sectional area toward the inner end. the goose neck, and the chamber 14, provide for gradual expansion of the fuel mixture as it moves toward the ports 13.

With this construction, a web 19 extends transversely across the lower end of the .wall 15 substantially at the level of the upper 'wall of the tube 10 and toward the wall 18. This web 19 is utilized as'a simple and efiective support for the burner head 16, which in the present instance has an axial stem 20 projecting downwardly therefrom with a reduced lower end 21 fitting into a socket 22 formed in the upper side 7 of the web 19 so as to prevent lateral movement of the lower end of the stem 20.

Similar movement of the upper end of the stem and head is prevented by engagement of the flange 17 with the wall 15. The desired engagement is preferably provided by forming the wall 15 with an outwardly extending flange 23 with its upper surface shaped to provide an upper surface 24 which is inclined slightly inwardly and downwardly so as to be adapted for engagement by the flange 17. Thus lateral displacement of the head is prevented. Adjacent to its upper end the stem 20 isv tapered gradually outwardly as at 20 whereby to direct the fuel toward the ports 13.

With this construction it will be seen that the fuel discharge ports 13 have a slight upward inclination so that the fuel burns in a series of outwardly and upwardly extending jets. The supply of secondary air to these jets is controlled to produce efficient combustion by extending the flange 23 beyond the outer ends of the fuel discharge ports 13 so as to form a ledge 25 preventing upward passage of air immediately adjacent to the ports 13.

In the use of a burner of this type liquids are often spilled upon the burner, and the ledge 25 is preferably formed with its upper surface sloping outwardly so as to drain such liquids out wardly away from the ports 13. It should be noted that the upper surfaces formed on the flange 23 meet in a centrally located ridge 26, and that the outer edge of the head 16 extends outwardly beyond the ridge 26 whereby to insure proper drainage of liquids from the rounded upper surface 27 of the head onto the sloping upper surface of the ledge 25.

From the foregoing it will be apparent that the formation of the burner is such that liquids are drained from sides of burner whereby to minimize cleaning and insure satisfactory operation. When cleaning does become necessary, the operation is comparatively easy by reason of the simple form and removable character of the burner head. The head is supported by simple means which does not retard materially the flow of fuel and all of the parts are of such a character that they may be economically manufactured.

I claim as my invention:

1. A burner for gas cooking ranges comprising an elongated mixing tube having an annular wall communicating therewith and projecting upwardly from one end thereof, a web formed thereon projecting from one side of said wall toward and beyond the center thereof adjacent to the lower end of said wall, a burner head adapted to overlie the upper edge of said wall and shaped to cooperate with said wall in defining fuel discharge ports, and a stem extending downwardly from said head and engaging said web to determine the position of said head.

2. A burner for gas stoves comprising a mixing tube having an upstanding annular wall at one end thereof, a web extending transversely of said wall toward the center line thereof and spaced from the upper edge of the wall, said upper edge of said wall being formed to provide an inverted frusto-conical surface, a head having a depending annular flange with a plurality of spaced radial notches therein, said flange being adapted to engage said surface to define fuel discharge ports, and a stem projecting downwardly from said head and adapted to engage said web to prevent lateral movement of said stem.

3. A gas burnerhaving an annular wall defining a fuel distributing chamber, said wall having its upper edge formed to provide inwardly and downwardly and outwardly and downwardly sloping annular surfaces meeting in an annular ridge intermediate the sides of said upper edge, and a burner head bridging the upper end of said wall, and overlying said inwardly sloping surface, said head having radially extending notches in its lower surface cooperating with the upper edge of said wall to define fuel discharge ports, and said head above said ports extending slightly beyond said ridge.

4. A burner for gas cooking ranges comprising an elongated mixing tube adapted to be horizontally positioned and to receive fuel mixture at one end and having an annular wall communicating with and projecting upwardly from the other end thereof, said tube having a web formed thereon to project toward said other end and across the lower end of said wall, and also having a portion extending beyond said web and providing a reversely bent passageway from said tube into the space defined by said wall, said wall having its upper edge formed to provide inwardly and outwardly sloping annular surfaces meeting in an annular ridge intermediate the sides of said upper edge, and a burner head having teeth depending from its outer edge to engage said inwardly sloping surface to define fuel ports, said head overlying a portion of said outwardly sloping surface to protect said ports.

GEORGE E. PICKUP.

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