US1322249A - Gas-burner - Google Patents

Description

E. D. LELAND.

GASBURNER.

APPLICATION FILED APR.18. 1918.

'1 $22,249. Patented Nov. 18, 1919.

INVENTOR UNITED STATES PATENT OFFICE.

EDWARD D. LELAND, 0F PITTSBURGH, PENNSYLVANIA. ASSIGNOR 0F ONE-HALF T0 FRITZ UHLENHAUT, J 3., OF PITTSBURGH, PENNSYLVANIA.

GAS-BURNER.

Specification of ltetters Patent.

Patented Nov. 18, 1919.

Application filed April 18, 1918. Serial No. 229,276.

To all 'wliom it may concern:

Be it known that I, EDWARD D. LELAND, a citizen of the United States, and resident of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Gas-Burners; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to an improvement in gas burners for use under boilers, heating furnaces, etc.

' The object of my invention is to provide a burner which makes. it feasible to burn gas efliciently under various conditions of draft, and also where the gas is delivered to the burner under either a high pressure as, for example, forty pounds per square inch-or under a very'low pressure-as, for example, one inch of water pressure. The

difficulty with most gas burners now in use is that when the gas pressure is low and the draft is poor, there is danger of the gas igniting near the mixer, and injuring the burner. If, in order to prevent this trouble, excess or secondary air is used to protect the burner, 10 of efliciency is the result. By my invention no excess air is needed to protect the burner, as there is no danger of the igniting gas injuring the burner.

To these ends my invention comprises the novel features hereinafter set forth and claimed.

In the accompanying drawing, Figure 1 is a sectional view of a portion of a boiler v furnace showing my improved burner applied thereto; Fig. 2 is an enlarged face view of a portion of the furnace front showing the shutter removed; Fig. 3 is an enlarged sectional view of the front end of the furnace showing my improved burner in position; Fig. 4 is a section on the line 4=.4:, Fig. 3; and Fig. 5 is a detail of the shutter-plates.

In the drawing, the numeral 2 indicates a common form of boiler furnace with the or perforations 7 may be of any suita 1e gas pressures they are preferably provided With curved or spiral vanes or blades 8, said vanes or blades being likewise formed of some refractory material. The purpose of these plates or vanes is to give the inflowing a1r a swirling motion, which hastens its mixing with the gas delivered to said passages. I

Located in front of the furnace is the box or casing 9, which is formed of cast or wrought iron, connected up to the supplypipe 10, a valve 11 being provided to control the supply of gas to the burner.

Projecting from the box 9 are the pipes- 12, which pipes deliver gas to the passages 7.

In order to regulate or control the supply of air to the burner, Iprovide shutter- plates 13 and 14. The shutter-plate 13 has 'the openings 15 which register with the passages 7 and through which the pipes 12 extend into said passages. The outer. shutter-plate 14 is movable and is provided with the openings 16, which register with the openings 15 ofth movable plate 13.

The bolts 17 extending into the furnacewall serve to hold the shutter-plates in position and slots 17 are provided to allow for the movement of said plates.

The outer movable shutter-plate 14 has the slot '18 through which the stud 19 on the inner plate projects. The outer plate has the stud 19*. A lever 19 is pivoted on the bolt 17" and said lever is connected to the that when one plate is moved over the other,

the air inlet may be cut down to the shape indicated in Fig. 5. By the use of these shutter-plates, the amount of air admitted is readily controlled, but even without said shutter, highly efiicient results are obtained with my improved burner. Any other suitable method of controlling the admission of air may be employed.

When my improved burner is in use, the gas admitted. by the pipes 12 enters the passages 7, and the air entering the openings is given a whirling motion, which tends to expedite its mixture with the gas in the mixing plate so that when the gas reaches the point of ignition within the furnace, better combustion is obtained, and the supply of air may be so regulated as to give efiicient results under various conditions of draft, as

Well as incases where the gas is delivered either under a high or low pressure.

What I claim is 1. In a gas burner, the combination with a furnace Wall, of a refractory mixing-plate the combustion takes place at the discharge ends of said passages.

2. In agas burner, the combination with a furnace wall, of a refractory mixing-plate set therein having mixing passages extending through it with open outer ends communicating directly with the atmosphere whereby all the air for mixing and combustion enters said open ended passages, individual gas pipes extending into said passages, and a shutter arranged so as to control simultaneously the supply of air directed from the atmosphere to each individual mixing passage whereby the combustion takes place.

at the discharge ends of said passage.

3. In a gas burner, the combination with a furnace wall, of a refractory mixing-plate set therein having a'plurality of mixing passages extending through, it with open outer ends communicating directly with the atmosphere, individual gas pipes extending into said passages, movable shutter-plates having openings through which said pipes extend, and means for moving said plates in opposite directions for controlling the supply of air to said mixing passages.

In testimony whereof, I, the said EDWARD D. LELAND, have hereunto set my hand.

EDWARD D. LELAND.

Witnesses:

Rom. D. TO'ITEN, Joan F. WILL.

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