US1877942A - Combination gas and oil burner - Google Patents

Description

Sept. 20, A. w MORSE COMBINATION GAS AND OIL BURNER Filed ma 16 A/berf W Morse J N VEN TOR.

BY fl m i. MM

ATTORNEY casing opposite its shorter branch 11 and makes a gas tight joint with the face of the Patented Sept. 20, 1932 I UNI TEDfSTA T s PATENTOFFICEL ALBERT w. Monsnor .ronns'r HILLS, NEW YORK comina'rron eAs Annoln BURNER- Application filed May 16, 1930. Serial No. 452,883.

This invention relates to improvements in is threaded interiorly for connection with fuel burners and more especially to burners an air or steam supply pipe 17. Y which, while primarily intended for use Casing 1 0 is bored out adjacent to branch with gas, have attached to them certain in- 11 to receive what is commonly termed an strumentalitiesto enable them to burn oil "oil spindle 18. This'oil spindle is of hol- 55 atomized by air or steam equally as well. low construction, being provided with a cen- This invention is a continuation in part of oral duct 19, and extends through the tubua co-pending application filed by me on lnr chamber 15in central alignment there- March 18, 1930, serial No. 136,707. with. is an enlarged upper end of spin-.-

It is the particular object of the invention dle 18 threaded interiorly to receive an to provide a burner of this kind which can atomizer plug 21 of the usual design, now be operated with gas at low pressure in comknown in the art as Anthony Nebulyte bination with atmospheric air and without plug. The outlet face of plug 21 is slightly air under pressure. Another object is to conically', shaped at 22, its sides having 5 equip a burner of this type with means to polygonal wrench surfaces 23. j enable the same to be changed over from gas 2 1is a deflector cap having an inner thread fuel to oil fuel, whenever the gas supply 38 screwed onto a correspondingly threaded should fail. Still another object is to so exterior 39 of the cylindrical chamber 15 locate adjustably within a gas burner, an oil formed by wall 16, a lock nut 10, also screwed 0 burning unit, so that operation with oil can onto threaded part 38 making a steam or air be obtained without the necessity of relocattight joint with the end face of the cap 2 1 ing the burner or varying its relation to the at the same time locking the same in such furnace to which it is applied. Further obrelation to the plug 21 as is found to be most jects will become apparent in the following advisable. 26 is a circular central opening 15 specification in which a preferred embodiwhich is smaller than the outside diameter of ment of the burner is described. I plug 21. Cap 2 1 is also provided with a The invention is illustrated by the aid tubular extension 27 ,slidingly engaging the of the accompanying drawing in which edges of the polygonal sides 23 of plug 21 Fig. 1 is a vertical longitudinal sectional providing passages. along the polygonal 30 view of the burner and a fragmentary part sides, the bottom of the extension 27 being so of the furnace to which the burner is apin spaced relation to and preferably parallel plied; with the conical shapedtop 22 of plug21.

Fig. 2 is a transverse cross-sectional view 30 is a gas cap adapted to be screwed onto taken along the plane of line 2-2 in Fig. 1; the threaded end 14 of branch 13" of casing 35 and 10. This capis' closedby a wall 31 which Fig. 3 is an end view of the gas cap of the has a central circular opening 31@ through burner. I which the deflector cap 24 projects externally Like characters of reference denote simiof the burner and thus of the gas cap 30. The Y lar parts throughout the several views and closure wall 31 has a number of perforations 40 the following specification. 32 drilled, preferably, radially, i. e. their 10 is a cylindrical casing of substantially axes converge toa common center within the T shape, having a short branch 11 threaded burner and are, in other.- words, diverging interiorly to receive a gas supply pipe 12. outwardly from theaxis of the burner out- The terminal of the longer branch 13 of caslet, and they are further, preferably, aring 10 is threaded exteriorly at 14. A tuburanged in two or more circular rows and in 9 lar chamber 15, formed by a wall 16 extends staggeredrelation to each other. 33 are lugs through the casing 10 in axial alignment on the outside of cap 30 to facilitate screwwith its longer branch 13. Wall 16a coning the same onto the threaded part 14. 34 nects the chamber 15 with the outer wall of is a shoulder inside of the gas cap which the combustion row one,

burner casing at the end of threaded part 14. 35 is a reduced portion of oil spindle 18, projecting outside of the casing 10 and is threaded exteriorly to receive a needle valve 36 of standard construction, controlling the flow of oil to the burner from a ipe 37.

41 is a fragmentary section 0 a shell of a furnace, having a refractory lining 4:2, and a combustion block 43 set into an opening of the furnace in axial alignment with the longi tudinal axis of the burner and in certain spaced relation to the end of the burner.

The operation of the device is as follows:

When the burner is normally used as a gas burner, the gas supply valve (not shown) is opened. Gas then passes through the pipe 12 into the casing 10, around walls 16 of chamber 15, and out of the burner through perforations 32 in the gas cap 30. Gas at any available pressure down to of water has been found sufficient.

Should it be desired to change the fuel from gas to oil on account of failure of gas supply or too great a drop in pressure, the gas supply valve is simply closed. Oil is then admitted through supply pipe 37 and needle valve 86, whence it passes through plug 21 out at the front end of the cap 24,

where it mixes with air or steam forced into the casing 10 through pipe 17. This air or steam is deflected by means of cap 24 and more particularly by the. passage between the outer. face 22 of the plug 21 and the bottom of extension 27 of the cap toward the atomized spray of oil issuing from the plug 21, and out of the burner through opening 26. Attention is particularly called to the fact that the burner is so located in front of the furnace that ignition of the gas occurs in the center of the combustion block in accordance with well established practice. But combustion characteristics of gas and oil vary considerably, and the spray of oil must be adjusted so that ignition also occurs in the center of block. This can be achieved by simply varying the position of the deflector cap with respect to the atomizer plug, which changes the oil flame to a wide or naroil burning unit to be so adjusted that ignition occurs at the desired point.

change over from gas to oil quickly and conveniently.

As an atomizing medium for oil when use instead of gas either steam or air unde: pressure may be employed, and reference t one of these media in the appended claims i: to include as an alternative the other.

Various changes in the form, proportior and minor details of construction may be recan be made ver sorted to without departing from the prin' clple or' sacrificin-g-any of the advantages of said deflector cap being slidingly extended through a central opening of the said gas cap, and means to admit gas into the burner around the said chamber to be discharged through it e perforations in the said gas cap.

2. In a burner as defined in claim 1, the 1 deflector cap being adjustable.

3. In a burner as defined in claim 1,- the gas cap having. a number of perforations having. their axes inclined wit-h respect to the longitudinal axis of the burner adapted to discharge diverging jets of gas.

4. I11 a burner as'defined in claim 1, the deflector cap and the atomizer plug being adjustable, independently of each other, with respect to the combustion block of a furnace, while the gas cap is in a fixed relation to the said block.

In testimony whereof I have hereunto set my hand.

ALBERT 7W. MORSE.

long or short one, and permits the 1 While I have shown and above described 7 one certain form of oil burner, operable by either air or steam, in connection with the gas burner, still other styles may be employed so long as the characteristics of the gas burner are not changed and the oil burning unit is located concentric with the gas burner and means are provided to adjust the point of ignition of the oil burning unit. While in the copending application, Serial N 0. 136,707 it was necessary to remove the gas cap ,to operate the oil burner, in the instant disclosure, this i is not necessary and the

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