US1628470A - Burner support - Google Patents

Description

Patented May 10, 1927.

UNITED STATES- ALBERT W. MORSE, OF LONG ISLAND CITY, NEW YORK.

BURNER SUPPORT.

Application filed. December 11, 1923. Serial No. 679,942.

This invention relates to improvements in burner supports, and more specifically to supports for oil or gas burners used in conjunction with metallurgicalv furnaces.

It is the object of the invention to rigidly and correctly apply to furnaces burners, particularly of the kind, in which the point at which the air and oil or gas mix externally of the oil nozzle is constant, regardless of the regulation of .the air and oil origas pressures. The invention is therefore, especially applicable to burners or mixers of the type described in applicants Patent #1,4l74,603, issued November 20, 1923.

This and other objects are attained by means of the device illustrated in the accompanying drawings, in which Fig. l is a Vertical longitudinal sectional view of the burner support with part of the burner indicated to illustrate the application and showing a fragmentary section through part of the furnace wall;

Fig. 2 is a cross-sectional View along the plane of line 22 in Fig. 1, showing the open position of the shutter in dotted lines; and

Fig. 3 is a fragmentary plan view of the burner and its support.

Like characters of reference denote similar parts throughout the several views and the following specification:

is a burner of the externally mixing class, having an oil supply pipe 11 at one end, and an air supply pipe 12 at, preferably, right angles thereto. 13 is an oil conduit extending loi'igitudinally through the center of the burner. Screwed into oil conduit 13 is a nebulizer nozzle 1 f, having an inner centrifugal chamber 15, and an outlet 15 inlets 16 and 17 tangential to the walls of the chamber, and ducts 18 and 19 in communication with the oil conduit 13. In spaced relation to the nebulizer nozzle 14 and, preferably, but not necessarily, integrally connected therewith by vanes 20 is a deflector cap 21, interiorly threaded at 22 to screw onto a'correspondingly' threaded end of the burner.

All the parts, so far described, are common to the externally mixing, free acting, mechanically atomizing kind of burner, known in the art as Anthony burner, as more. particularly shown in applicants Patent #1,474r-,603, above mentioned.

At both sides of cap 21 are arms 23 and 24: which are spread out to connect with a circular plate 25 which is fastened to a furnace shell 26 inclosing the fire bricks of the furnace forming the'furnace walls proper of which 27 is a fragmentary section. Plate 25 is fastened to the furnace shell 26 by means of cap screws 28 and 29. 30 is a circular opening through plate 25.

31 is a circular shutter slightly overlapping opening 30 of plate 25 for the purposeof closing the same. thickened extension of shutter 31, provided with a bore 33, adapted to fit over a tubular distance piece 34, interposed between a collar 35 of cap screw 28 and plate 25, to allow the shutter to pivot freely about set screw 28. 36 is a flat lug serving as a handle for operating the shutter 31. 37 is a stop projecting from the face of plate 25, a side 38 of which limits the rotary movement of the shutter 31 when it closes the opening 30, and

32 is a somewhat of which stop a side 39 arrests the travel of the shutter in such a expose opening 30.

40 is a circular opening, smaller in diameter than opening 30, through furnace wall 27, forming a combustio chamber. The outer end of opening 40 is rounded at 41, while the inner end is of diverging shape position as to entirely at 4:2, gradually increasing in diameter toward the center of the furnace. Opening 40 is in axial alignment with the burner and also with opening 30, cap 21 and nozzle 1 1.

The operation of the device is as follows:

Oil is admitted, under pressure, into the burner through pipe 11 and passes through conduit 13 into nebulizer nozzle 14, where it is atomized by being admitted through ducts 18 and 19 and inlets 16 and 17 tangentially into the centrifugal chamber 15 where it is atomized and discharged in form of a vapor or mist through outlet 15 Air is admitted by means of pipe 12 and directed against the vapor of oil by vanes 20 within deflector cap 21. This breaks up the oil into very small particles outside of the burner and combines with that vapor a sufiicient amount of air to form a combus tible mixture which ignites and is projected by its own pressure into the furnace through combustion chamber 40.

In burners of this type, it is of utmost importance that the alignment of the coinbustion chamber and the burner be accurate, that is that their center lines coincide. as otherwise the flame is not well distributed within the combustion chamber. lVith my ICU si'ipport, which integrally COlllltititttl with the detleetiiir cap which is in fixed relation to the nebulizer nozzle, the burner and the combustion chamber are always aligned when in operative position.

As soon as the burner is turned off, the shutter 31 is closed to retain all possible heat within the furnace.

Itis understood that while I have above described my invention as applied to one kind of burner of the mechanically atomizing kind, its use and appli-ation may be varied and serve any other kinds of burners well in which the point of contact letween the air and oil, outside of the burner, is fixed.

Various changes in the forin, proportion and minor details of construction may be resorted to without departingfrom the principle or sacrificing any part of the invention as defined in the appended claim.

What I claim as new, is:

In combination with a furnace, a burner of the externally mixing type, having a deflector cap with a central outlet and a nebulizer nozzle in fixed relation thereto, the said deflector cap having means to fasten the burner to the furnace comprising;- arins extending from the sides of the said cap, a plate having a circular opening in alignment with the outlet in the said cap and being in spaced relation thereto, screws fastening the said plate to the furnace, the said arms of the cap being integrally connected to the said platewhereby the relation of the outlet in the said cap and the opening in the plate is kept constant, and a single shutter for the opening in the plattn pivotal! connected to one of the said screws and interposed between the deflector cap and the plate, substantially as set forth.

In testimony whereof I have hereunto set my hand.

ALBERT MORSE.

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