US2024510A - Gas burner - Google Patents

Description

B. CRISENBERRY 2,024,510

GAS BURNER Filed Nov. 8, 1935 INVENTOR. Barr/0&7; crz'seryierr y BYE,E)E

ATTORNEYS.

Patented Dec. 17, 1935 PATENT OFFICE GAS BURNER Beniohn Crisenberry, Detroit, Mich; Ruth Crisenberry admlnistratrix of said Benjohn Crisenberry, deceased Application November 8, 1933, Serial No. 697,119

'2 Claims.

My invention relates to a gas burner, and more particularly to a burner adapted for use in gas ranges and the like, a burner embodying my invention being particularly adapted to increase the efliciency of the burner by decreasing the amount of gas consumed and assuring a perfect combustion of the gas passing into the burner.

Prior to my invention the burning of gas in burners, gas ranges and the like, has been accomplished by the use of a primary air supply mingling with the gas passing through the jets in the burner, and a secondary air supply which passes around the jets in the burner and supports the combustion of the gas and the intermingling primary air. Normal air pressure being approximately fifteen pounds per square inch, the velocity of the secondary air is much higher than is required to support a perfect combustion of the gas and the intermingled primary air. The use of the secondary air at normal atmospheric pressure results in an incomplete combustion of the gas employed, the scattering of the heat generated in the burner before its heat value has been absorbed or expended on the object to be heated, and a cooling of the tips of the jets of the burner so as to cause a liberation of the carbon monoxide gas.

It is therefore an object of my present invention to provide a gas burner in which the primary air is introduced under substantially atmospheric pressure, but in which the secondary air is baflied in such a manner as to be admitted to the burner only in regulated amounts and at regulated pressures. It is a further object of my present invention to provide a gas burner in which the direction of flow of secondary air is definitely controlled to direct the heat generated by the burner to the object which is to be heated.

It is a further object of my present invention to provide a gas burner which may be adjusted to provide varying amounts of secondary air to meet the varying demands of the burner.

45 These and various other objects, features of arrangement, construction and operation, are

plainly shown and described and will be best understood by reference to the accompanying drawing, in which: 50 Fig. 1 is a top plan view with parts broken away; 7

Fig. 2 is a staggered sectional view taken on the line 2-2 of Fig. 1;

Fig. 3 is an enlarged fragmentary side elevational view taken on the line 3--3 of Fig. 1;

Fig. 4 is a fragmentary sectional view taken on the line H of Fig. 1.

Similar reference numerals refer to similar parts throughout the several views.

Referring to Fig. 1, a gas burner embodying 5 my invention is formed of a cast iron body portion It, in which is screw-threaded a pipe H to admit gas and primary air to the interior chamber l2 (Fig. 2), from which it passes through a plurality of high jets i3 and a plurality of lower 10 jets It for combustion purposes. The-circular portion of the body ill is formed with a closed well 15 in which a small opening it is provided.

A plurality of lugs H are provided on suitable portions of the body l0 andserve as supports 15 for the baffle ring i8. The baflie ring i8 as shown in Fig. 3 is provided with a plurality of notches IQ of varying depths at points adjacent its point of contact with the supports H. The ring I8 as shown, extends completely around the outer cir- 20 cumference of the burner embodying my invention and is flanged inwardly at its top portion to provide a ring 20, the inner circumference of which is directly above the opening in the outer ring ofgas jets i3 and i4. 25

The high jets 13 are formed on flanges 2i which extend from the circular well E5 to the outer circumference of the burner on a spirally extending line. The jets formed integrally with the ridges 2| also are placed on spiral lines ex- 30 tending from the center of the well i5 to the outer circumference of the burner. The low jets It also extend on spiral lines extending from the center of the well IE to the outer circumference of the burner, but as shown in Fig. 2 are not as 35 high as the jets I3.

The operation of a burner embodying my invention is as follows:

Thesupply of gas and intermixed primary air passes through the pipe H to the interior cham- 40 ber l2 within the body Ill of the burner. This intermixed air and gas passes through the jets l3 and I4 and is ignited at the ends of each of the jets. There are thus provided two types of flames in this burner. Both flames are short intensely hot flames, but due to the varying heights of the jets I3 and M, the flames from the high jets I3 are relatively nearer the object to be heated than are the flames from the low jets M.

The supply of secondary air passes through the opening between the body In of the burner and the lower edge of the baffie ring l8. The face of the opening between the body III of the burner and the baifie' ring I8 is regulated by the plurality of slots l9 provided in the lower edge of the ring ll. As shown in Fig. 3, the depths of the slots I! are such that the ring I! is raised or loweredrelative to the body ID of the burner by contacting the various slots ll with the supports II. For burning the burner with an intense flame, it is essential that the maximum amount of secondary air be admitted between the ring I. and thebody ll of the burner. This is accomplished by placing the ring I. on the burner in such a position that the slot ll of least depth contacts with the top' of the supports ii. If a low flame is desired. a lesser supply of secondary air is required and so the deepest slot II is selected to contact 'with the support ll, thus restricting the opening between the ring it and the body ill of the burner.

As the secondary air is admitted through the opening between the ring it and the body I ll of the burner, a swirling motion is impartedto it by reason of the arrangement of the ridges II and the placement of the jets i3 and I4 on lines extending spirally from the center of the well II to the outer circumference of the burner. I have found that by so placing these ridges 2i and the jets II and I, this swirling motion imparted to the secondary air results in a creation of a diminished pressure area adjacent the well I5, and so tends to suck the flames from the jets ii and it toward the central portion of theburner in such a manner that the heat is centralized at a point adjacent the center portion of the burner instead of being dissipated and scattered as in conventional types of burners.

An opening I is provided in the bottom of the I well I! in order to permit a drainage of the well In this specification I have employed certain language for the purpose of describing my invention. It is not my intention to limit my invention by the language so employed otherwise than in accordance with the following claims.

I claim:

1. A gas burner including a continuous circular body portion, a gas chamber formed therein, aplurality of, gas jets communicating with said chamber and having varying heights relative to the face of said burner and placed on lines extending spirally from a point adjacent the center of the burner to its outer edge, and a baille plate extending around the outer circumference of the body portion of said burner ing a gas chamber formed therein, a face portion, a plurality of spiral ridges extending on the face thereof, a plurality of jets'communicating with the gas chamber formed in said ridges, a plurality of jets formed in the space 5 between said ridges, all of said jets being placed on lines extending spirally from a point adjacent the center of the burner to the outer edge thereof, and a baiile plate extending around the outer circumference of the body portion of'said 1o burner and-controlling the amount of secondary air admitted to the burner.

4. A gas burner including a body portion hav-' ing a gas chamber formed therein, a face portion, a plurality of spiral ridges extending on is the face thereof, a plurality of jets communicating with the gas chamber formed in said ridges, a plurality of jets .formed in the space between said ridges, all of said iets being placed on lines extending-spirally from a point Mia-.20 cent to the center of the burner to the outer edge thereof, and a movable baille plate extending around the outer circumference of the body portion of said burner and adjustable relative to said burner to control the amount of secondary air admitted to the burner.

5. A gas burner including a body portion having a gas chamber formed therein, a central well, a face portion, a plurality of gas jets of varying heights relative to said face portion and communicating with said gas chamber, and means for controlling the amount and direction of secondary air admitted around said Jets, and including a plurality of ribs extending on spiral lines running from a point adjacent the well of 36 said burner to its outer circumference.

6. A gas burner including a body portion having a gas chamber formed therein, a central well, a face portion, a plurality of gas jets of varying heights relative to said face portion and 40 communicating with said gas chamber, and means for controlling the amountand direction of secondary air admitted around said jets, and including a ring extending around the outer circumference of said burner and a plurality of ribs raised from the face portion thereof and extending on spiral lines running from the well to a point adjacent the outercircumference of said burner.

'7. A gas burner including a body portion hav-' ing a gas chamber formed therein, a face portion, a plurality of spiral ridges extending on the face thereof, a plurality of Jets communicating with the gas chamber formed in said ridges, a plurality of jets formed in the space between said ridges, all of said jets being placed on lines extending spirally from a point adjacent the center of the burner to the outer edge thereof, and an adjustable bailie plate extending around the outer circumference of the body portion of said burner and controlling the amount of secondary air admitted to the burner.

BENJOHN CRISENBERRY.

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