US3307611A - Burners - Google Patents

Description

J- R. BROWN March 7, 1967 BURNERS Filed Dec. 7, 1964 INVENTOR.

JAMES R- 6 Ro United States Patent 3,307,611 BURNERS James R. Brown, 3611 N. Main St., Soquel, Calif. 95073; June D. Brown, executrix of the last will of said James R. Brown, deceased Filed Dec. 7, 1964, Ser. No. 416,382 3 Claims. (Cl. 158-88) This invention relates to burners, and especially to a wick-type of burner in which the fuel to be burned is delivered by capillary action.

The object of the present invention is generally to improve the construction and operation of burners of the character described; to provide a burner in which a wick is employed to supply fuel to the burning area by capillary action and without applying pressure on the fuel; to provide a burner to which air under pressure slightly above atmospheric pressure is supplied to the burning area so as to promote combustion; and further, to provide a burner from which no gas discharges or fuel leakage can take place if the flame in the burner is extinguished.

The invention is shown by way of illustration in the accompanying drawings, in which: I

FIGURE 1 is a vertical section of the burner, and a portion of the tank containing the liquid fuel to be burned.

FIGURE 2 is a plan view of an air distributing disk; and

FIGURE 3 is a side view of a frame which supports the fuel tank and two burners.

Referring to the drawings in detail, and particularly FIGURE 3. A indicates a frame supported by four legs 2. Supported by straps 3 in the frame is a fuel tank 4, and supported by the tank are two burner units indicated at B and C. Inasmuch as the burner units are identical in construction, the description of one will suflice.

Referring now to FIGURE 1, 5 indicates a burner body, which is tubular in shape. The burner body is disposed on a heat-insulating washer 6, which is secured to the tank. Formed adjacent to the upper end of the burner body and interior thereof is an annular shoulder 7, on which is disposed an air distributing disk 8. Secured in a suitable manner and extended centrally through the burner body, is a wick tube 9, and extending through the wick tube, and down into the tank is a wick It). Supported by the disk 8, is a chimney tube 11, which has rows of perforations formed therein, as indicated at 12.

In actual operation one or both burners may be lit by extending a match down into the burner tube, so as to ignite the wick. At the same time a circuit is closed through a motor 14, by means of a switch not shown. The motor drives a fan which delivers the air through a manifold 16 to each burner. The air from the fan enters a chamber 17 in the burner body, and then passes upwardly through an annular row of perforations 18 formed in the disk 8. Air is thus delivered and distributed around the burning wick causing it to burn with an intense blue flame, to which further air is delivered through the perforations 12 formed in the chimney. The primary air delivered by the fan 15 is under a very slight pressure, probably not more than Ms of a lb. per square inch. The motor 14 requires so little current that it hardly registers on an amp meter, thus the current may be supplied by dry battery or the usual storage battery used in automobiles, trailers, or motor boats.

If a pot of coffee is placed over the burner C and happens to boil over, the flame in the burner C may become extinguished, but no harm will be done as the fuel is delivered to the wick by capilliary action, nor will any gas be discharged as there is no generating tube employed to make gas, nor is there any danger of the fuel overflowing to create a fire hazard, nor is any carbon monoxide formed where alcohol as a fuel is employed.

At the present time there are several burners known as capstoves, as they are employed or used in camping and they are also used on yachts and motorboats in the cook cabin. Practically all of these stoves require fuel under pressure. The fuel employed will be gasoline, kerosene or alcohol. The pressure applied to the fuel may be supplied by a hand pump; or an elevated tank to produce pressure. Stoves of this character is or are a great hazard, as the flame is easily extinguished, by a coffee pot boiling over, of by draft, etc, and if or when extinguished, will create an explosion. When gas discharges through a generating tube it becomes cool; then liquid fuel begins to flow, producing a great fire hazard. This being particularly true where burners of this character are used on motor boats, yachts, etc.

The burner shown in this invention cannot produce gas, nor can liquid fuel leak or discharge therefrom. Nor can the atmosphere be charged with carbon monoxide, as I prefer the use of alcohol.

Having thus described my invention I desire to cover the invention in the following claims.

1. In a Wick type burner, a fuel tank, a housing supported by the. fuel tank, a wick tube extending through the housing, a wick disposed within the tube filling the entire cross-sectional area of the tube, said wick tube extending in the tank at one end and to a burning area at the upper end of the tube, means for delivering a primary flow of air to the housing, a disk at the upper end of the housing forming a cover therefor, said disk having perforations around the outer edge to uniformly direct the air to the burning area, and a chimney supported by the housing, said chimney having perforations therein to admit a secondary flow of air to the burning area.

2. In a wick type burner, a fuel tank, a housing supported by the fuel tank, a wick tube extending through the housing, a wick disposed within the tube filling the entire cross-sectional area of the tube, said wick tube extending in the tank at one end and to a burning area at the upper end of the tube, means for delivering a primary flow of air to the housing, a disk at the upper end of the housing forming a cover therefor, said disk having perforations around the outer edge to uniformly direct the air to the burning area, and a chimney supported by the housing, said chimney having perforations therein to admit a secondary flow of air to the burning area, and an insulating washer disposed at the lower end of the housing, said washer preventing heat flow from the housing to the fuel tank.

3. In a wick type burner, a fuel tank, a housing supported by the fuel tank, a wick tube extending through the housing, a wick disposed within the tube filling the entire cross-sectional area of the tube, said wick tube extending in the tank at one end and to a burning area at the upper end of the tube, and a blower for delivering a primary air to the housing, said blower being only capable of providing air at a pressure of pound per square inch, and a chimney supported by the housing,

said chimney being perforated to admit a secondary flow 2,344,291 3/1944 De Lancey 15894 of air to the burning area. 2,492,532 12/ 1949 Long et a1. 15894 X 3,185,144 5/1965 Price 126-96 X References Cited by the Examiner FOREIGN PATENTS UNITED STATES PATENTS 5 702,681 1/1954 Great Britain. 273,005 2/1883 Armour 126-45 2,019,646 11/1935 Barhofi 15894 X FREDERICK KETTERER, Primary Examiner.

Claims (1)

1. IN A WICK TYPE BURNER, A FUEL TANK, A HOUSING SUPPORTED BY THE FUEL TANK, A WICK TUBE EXTENDING THROUGH THE HOUSING, A WICK DISPOSED WITHIN THE TUBE FILLING THE ENTIRE CROSS-SECTIONAL AREA OF THE TUBE, SAID WICK TUBE EXTENDING IN THE TANK AT ONE END AND TO A BURNING AREA AT THE UPPER END OF THE TUBE, MEANS FOR DELIVERING A PRIMARY FLOW OF AIR TO THE HOUSING, A DISK AT THE UPPER END OF THE HOUSING FORMING A COVER THEREFOR, SAID DISK HAVING PERFORATIONS AROUND THE OUTER EDGE TO UNIFORMLY DIRECT THE AIR TO THE BURNING AREA, AND A CHIMNEY SUPPORTED BY THE HOUSING, SAID CHIMNEY HAVING PERFORATIONS THEREIN TO ADMIT A SECONDARY FLOW OF AIR TO THE BURNING AREA.

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