US2290785A - Proportioning burner - Google Patents

Description

Patented Jul 21, 1942 UNITED STATE'S, PATENT OFF-ICE PROPORTIONING BURNER Alexander J. Turpin, Stewart Manor, N. Y., as-

signor to Hauck Manufacturing Company, Brooklyn, 8. Y., a corporation of New York Application December .12, 1941, Serial No. 422,701 g 3 Claims. (Cl. 2991 40) The invention relates to mixer and burner apparatus suitable for the intimate mixture and combustion of .various liquids, particularly as fuels in a gaseous, liquid, or even powdered-solid state, for example, as in the mixing or atomizing of a combustible oil or gas or powdered fuel with air or steam or with a further combustible gas. The invention hasreference more especially to a burner of the typeset forth in U. S. Letters Patent #2,2l9,119, granted October 22, 1940, to Alfred F. Schumann and applicant, assignors to Hauck Manufacturing Company. These burners provide for automatically and accurately proportioning from minimum to maximum capacity all of the primary and secondary atomizing air with reference to thefuel flowing through the burner, and combine a straight-line-flow fuel-control valve with a straight-line-flow air-control mechanism in a single unit.

The present invention has reference to improvements in a burner of this nature; and it has for an object to provide a compact and rugged unit constituted of a minimum number of parts which are readily accessible and removable, as for cleaning or replacement.

A further object of the invention is to insure the maintenance of the difierent elements in their proper coaxial relationship, particularly' in the case of smaller size burners.

In carrying out the invention, the burner body and atomizing fluid nozzle are constituted as a unit; and a member for supplying fuel, including the one half of the fuel-control element, is integral with a back plate designed for sealing the burner body at the end opposite its nozzle outlet.

The nature of the invention, however, will best be understood when described in connection with the accompanying drawing, in which:

Fig. 1 illustrates the novel burner unit in elevation.

Fig. 2 is a longitudinal section therethrough.

Fig. 3 is an end view with the bracket, valve cover, and attached parts removed.

Referring to the drawing, the burner member is shown to comprise a suitable body In with integral cylindrical casing ll aifording a' longitudinally disposed chamber l2, the casing terminating in a conical discharge tip l3 with axial outlet M for an atomizing gaseous medium, as air under requisite pressure. This fluid is to be supplied to the chamber [2 through an inlet iii in the body with which said chamber is in direct communication.

At the end of the body Ill opposite the outlet 55 H said body is provided with an opening l6 sealed by a plate I! which is removably attached thereto asby means of screws l8. Extending axially inwardly into the body It and integral with said plate I1 is a duct member 20 axially bored through as at 2| to afford a passageway for the combustible fluid to be mixed with the atomizing medium, the inner end of said duct member extending into the chamber l2.- At this end, the duct member is provided with a suitable nozzle 22 which projects beyond said end and has suitable discharge outlets 23.

At the outer end of member 20, the plate li provides a seat 25 for a suitable valve piece 26 which operates over a port 21 through the seat,

said port communicating with the bore 2| to supply the fluid fuel to the burner. This is introduced into a chamber 28 over port 21 through a supply pipe 29, said chamber being formed between the seat 25 and a cover member 30. The latter is removably attached to the plate H as by means of screws 3|, and there extends through said cover the operating spindle 32 for the valve piece 26 which is movable thereby over the port 21 to control the supply of fuelto member 20 and its nozzle 22.

The said valve piece is operated similarly to the manner disclosed in the aforesaid patent, as through an angularly movable arm 33 and bracket 34, thevarm controlling also the flow of atomizing medium so that both are varied simultaneously as the arm 33 is rocked.

Operation of the atomizing medium control is effected as follows and from an extension of the arm 33 into the body Ill to provide an adjusting member 35 which is mounted for oscillatory movement between said plate l1 and the juxtaposed end of the body Ill. The adjusting member 35 to this end has an inwardly extending sleeve portion 36 which isslotted longitudinally from its inner edge to provide the slot 31. Between this sleeve portion 36 and the duct member 20 is a further sleeve 38 which is movable on said duct member and extends at one end over the nozzle 22 and into the outlet [4, said sleeve having circularly disposed openings 39 to afford communication between the chamber l2 and the interior of the outer end of said sleeve which is located about the nozzle end 22. Said outer end of the sleeve is of conical shape cooperating with the tip l3 tocontrol therewith the are of opening of the outlet l4.

the adjusting member 35. This may be effected by means of a pin or screw 40 secured to the sleeve 38 and extending radially therefrom into the longitudinal slot 31 so that when the member 35 is oscillated, corresponding rotational movement will be imparted to sleeve 38 This rotary movement is further caused to reciprocate the sleeve 38 through a pin or screw 4! fixed to the rigid duct member 20 and extending radially therefrom into a helical slot 4101' the said sleeve 38, said slot having a longitudinal extension 43 to the outer edge of the sleeve 38 to admit of separation of the said sleeve from the said duct member 20.

The apparatus hereinbefore described affords a very compact and rugged burner construction and one wherein the positions of the control sleeve and the fuel supply member are maintained accurately in their relation to the outlet opening of the discharge tip of the burner body. To separate a part for repair or replacement, the screws I8 are removed and the cover member 30 with plate I! and duct member 20 with sleeve 38,

as well as the adiusting member 35, may be withdrawn from the burner body as a unit. By then removing the other screws 3|, cover 30 and attached elements as well as the adjusting member 35 and the sleeve 38 may be separated from the duct member 20, if necessary, as for cleaning the fuel valve and nozzle.

I claim:

1. Burner apparatus of the nature set forth, comprising a body with integral cylindrical casing portion at one end terminating in a conical discharge tip with axial outlet ior fluid, said casing having connection with a source or fluid medium; means to seal the body at the opposite end including a plate removably attached to the body thereat, said plate affording a valve seat with port and an integral duct member extending from the plate into the body axially of its cylindrical casing, axially bored through to the said port and having a nozzle element at its inner end, together with a cover: member for the seat secured to the said plate, and a control member for varying the portarea operable externally of the cover member; a sleeve movably supported on the duct member extending at one end over its nozzle and having openings to afiord communication with the said cylindrical casing portion,'the sleeve being juxtaposed to the discharge tip thereof to provide a controllable outlet therewith; and means cooperating with the end oi said sleeve opposite its tip to rotate the sleeve on and to move it longitudinally of the said duct member.

2. Burner apparatus of the nature set forth, comprising a body with integral cylindrical casing portion at one end terminating in a conical discharge tip with axial outlet for fluid, said casing having connection with a source of fluid medium; means to seal the body at the opposite" end including a plate removably attached to the body thereat, said plate affording a valve seat with port and an integral duct member extending from the plate into the body axially of its cylindrical casing, axially bored through to the said port and having a nozzle element at its inner end, together with a cover member for the seat secured to the said plate, anda control member for varying the port area operable externally oi the cover member; a sleeve movably supported on the duct member extending at one end over its nozzle and having openings to afford communication with the said cylindrical casing portion,

the sleeve being juxtaposed to the discharge tip thereof to provide a controllable outlet therewith; and means to rotate the said sleeve on the duct member and to move the same longitudinally thereof including an adjusting member extending into the body and mounted between the said plate and the juxtaposed end of said body for oscillatory movement therein, said adjusting member having an inwardly extending sleeve portion slotted longitudinally from its inner edge,

a pin carried by the movably supported sleeve

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