US2517949A - Retort type liquid fuel burner with flame deflector and starting pan - Google Patents

Description

" Aug. 8, 1950 5 w WARGQ 2,517,949

RETORT TYPE LIQUIDFUEL BURNER WITH FLAME DEFLECTOR AND STARTING PAN Filed Feb. 27, 1947 2 Sheets-Sheet l Ill l/l Fig. 2.

Inventor George W Wargo Aug. 8, 1950 Filed Feb. 27, 1947 G. w. WARGO 2,517,949 RETORT TYPE LIQUID FUEL BURNER WITH FLAME DEFLECTOR AND STARTING PAN 2 Sheets-Sheet 2 Fig. 4.

I u g George W Wargo 24 12 Inventor M WW lim Patented Aug. 8, 1950 TENT OFFICE 'RETQRT TYPE LIQUID FUEL BURNER WITH 7 FLAME DEFLECTOR AND STARTING PAN I "George VVargo, Live Oak, Fla. Application February 27, 1947, :Serial No. 731,302

' '2 Claims. (01. 158- 70) My invention relates to improvements in'fuel oil burners for heating tobacco"barnse uiDPQd with heat conducting and radiating lines.

The primary object of the inve'ntionis to provide a simply-constructed, inexpensive and efficient burner adapted *for easy connection. to such lines from outside a tobacco barn'and which is economical to operate, does not require forced draft, and provides a hotter flame with 'a given size of burner a'nd'a lowerrate of fuel consumption than'oth'er'devices designed forsiinilar purposes. V v h Other and subordinate objects, also comprehended by my invention, together with the precise nature of my mprqvements and the manifold advantages thereof, will be readilyunden stood when the succeeding description and claims are read with reference to the drawings accompanying and-forming part of this specifica- Figure 2 is a fragmentary View in vertical Jlfont the nipple2 and communicating with atmosgitudinal section taken on the line 2-2 of -Figure land drawn'to a larger scale; ,1,

Figure 3 is a view in -transverse section taken on the line 33 of Figure 2 and drawn to a still larger scale;

Figure 4 is a view in horizontal section taken on the line 44 of Figure 3.

Referring to the drawings by numerals, my improved burner in the illustrated embodiment thereof comprises, as its basic element, a tubular casing I of any suitable length formed preferably of a section of pipe, and which is designed to be connected at a front end thereof, in any suitable manner, not shown, to the rear end of a branch nipple 2 extended horizontally out of one side of a tobacco barn 3 from a flue system 4 adapted to communicate with a smokestack, not shown. As

will be understood, the casing I opens at its front end directly into the branch nipple 2. The particular type of fluesystem, other than as regards the nipple 2, is not important to the invention and therefore need not be entered into further. A rear end wall 5 closes the lower half of the rear end of the casing I and has hinged thereto, as at 6, a semicircular draft control door 'I vertically swingable into opening and closing positions relative to the upper half of the rear end of said casing. A ratchet-toothed bar 8 hinged, as at 9, on the casing I to swing 2 downwardly into an edge notch ID in said door "1 provides for latchingsaid door I in different open positions. The described casing I forms a combustion chamber .II therein communicating at its front end with the flue system 4 by way of pheric air at its rear end by way of the draft control door 'I. p

A cylindrical, hollow, fuel pre-heating element I2, substantially smaller in diameter than the casing I and having closed ends I3 extends endwise in the casing diametrically thereof and in the rear position of said casing. A single, longitudinal row of discharge ports If} is provided in the rear of said prerheating element I2 in the horizontal diameter thereof and hichmay be of any size suitable for a purpose presently appa nt. .l

Surrounding the fuel pre heatin'g element I2 is a combination baffleand pan element I5, 0f the same length as said element I2, and com prising a hollow shell relatively larger in cross section than said element l2, the major portion I6 of which is cylindricalin cross section with a longitudinally extending, rearwardly, projecting baflle ll of right-angled cross section extending from end to end of said element I5 in the horizontal diameter of the same. The baflle [1, as will be seen, presents aconcave sideto the row of ports I4. End'bottom flanges I8 in said ele ment I5, together with a bottom segment I9 of said element, form a bottom pan 2B in said element. The flanges I8 fit part way around the bottom of the fuel pre-heating element II and space said elements I2, I5 apart at the bottoms thereof. A spacing collar 2| between the tops of said elements [2 and I5 space the same apart at the tops thereof. The major portion I6 of said element I5 is concentric to the fuel pre-I heating element I2. A pair of rear, air- inlet slots 22, 23 in the major portion I6 of said element I5 extend along the top and bottom of the baffle I'I. A substantially wider front slot 24 in said major portion I6 extends longitudinally 25 and is suitably fixed on top of the casing l with a set screw 28 therein turned against said line 25 so that said elements I2, 15 are suspended in the casing I by said line 25.

Referring now to the operation'of the described burner. To start the burner, liquid fuel is fed into the fuel pre-heating element 12, by way of the fuel feed line 25, until the liquid fuel overflows out of the ports l4 into the pan 28. The overflow of liquid fuel in the pan 2B is ignited through either slot 22 or 23 to preheat the fuel pre-heating element 02. When said element l2 has been pre-heated to the proper temperature, the liquid fuel therein is converted into gas which issues in jet form out of the ports [4 against the concave side of the baflie I! to rebound therefrom and spread around the fuel pre-heating element I2, such gas being ignited in a manner which will be clear and forming a hot flame completely surrounding the fuel pre-heating element 12 and issuing out of the front slot 24 into the combustion chamber ll. After the burner has been thus started, the flame will maintain the fuel pre-heating element l2 at a high temperature sufficient to convert liquid fuel continued to be fed therein into gas. Atmospheric air is drawn, by the chimney draft, into the casing I at the rear end thereof and through the combination bafile and pan element I5 which forms a mixing chamber for air and gas as will be clear. The draft may be regulated by means of the draft door 1.

The foregoing will, it is believed, suffice to impart a clear understanding of my invention without further explanation.

Manifestly, the invention, as described, is susceptible of modification, without departing fromv the inventive concept, and right is herein reserved to such modifications as fall within the scope of the appended claims.

What I claim is:

1. A burner for use with a tubular casing forming a combustion chamber, said burner comprising a, cylindrical hollow fuel pro-heating element adapted to extend endwise in said cas ing diametrically thereof and provided with fuel discharger ports therein adapted to discharge toward the one end of said casing, a liquid fuel feed line to feed liquid fuel into said pre-heating element, and a shell surrounding said pre-heating element in spaced relation thereto and embodying a bottom pan for receiving liquid fuel discharged out of said ports for ignition to heat said pre-heating element and thereby convert liquid fuel therein into gas to issue out of said ports for ignition by the ignited fuel in said pan, said shell being provided with air inlet slots for admitting air into the same to mix with such gas, and having an outlet slot for flame, and a baffle embodied in said shell opposite said ports for causing gas to rebound and spread around said pre-heating element.

2. A burner for use with a tubular casing forming a combustion chamber, said burner comprising a cylindrical hollow fuel pre-heating element adapted to extend endwise in said casing diametrically thereof and provided with fuel discharger ports therein adapted to discharge toward one end of said casing, a liquid fuel feed line to feed liquid fuel into said pre-heating element, a shell surrounding said pre-heating element in spaced relation thereto and embodying a bottom pan for receiving liquid fuel discharged out of said ports for ignition to heat said preheating element and thereby convertliquid fuel therein into gas to issue out of said ports for ignition by the ignited fuel in said pan, said shell being provided with air inlet slots for admitting air into the same to mixwith such gas, and having an outlet slot for flame, and a baffie embodied in said shell opposite said ports for causing gas to rebound and spread around said pre-heating element, said shellbeing suspended by said fuel feed line in spaced relation to said pre-heating element. V I

GEORGE W. WARGO.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 410,826 Edgar Sept. 10, 1889 975,244 Howze Nov. 8, 1910 995,088 Pickens June 13, 1911 1,620,932 White Mar. 15, 1927

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