US1510423A - Combustible-mixture-forming device - Google Patents

Description

Sept

HpA. TEDMAN COLJBUSTIBLE MIXTURE FORMING DEVICE Original Filed July 50. 1.920

Patented Sept. 30, 11924.

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HUDsou A. 'rnnmauf-or .GAIESBURG, ILLINOIS, ASSIGNOR T0 WINSLOW BOILER & ENGINEERING COMPANY, or" CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

CoMBUsTIBLn- IxTURE-Fomame DEVICE.

Application filed July 30, 1920, Serial No. 400,280. Rencwed lvlarch 10, 1924.

T 0 all whom it may concern:

Be it known-that I, HUDSON A. TEDMAN, a citizen of the United States, residing at Galesburg, in the county of Knox and State of Illinois,.have invented certain new and useful Improvements in Combustible-Mixture-Forming Devices, of which the following is a specification, reference being had therein to the accompanying drawing.

The invention relates to mixture forming devices for liquid fuel burners, and consists in the matters hereinafter described and then pointed out in the claims.

In the drawings F 'ig, 1 is a longitudinal sectionaLview through the casing showing the combined fan and beater in side elevation;

N Fig. 2 is a sectional view on the line 2-2 of Fig. l; p

' Fig. 3 is a detail sectional View of one of the blades-on the line.33 of Fig; 2;

Fig. 4 is a detail perspective view of part of the combined fan and heater, and

Fig. 5 is a detail sectional View of one (if the beater blades.

The casing which. is substantially circular in contour is formed of a pair of opposite side plates 10 and the peripheral curved plate 11 these parts being of metallic construction and suitably connected in any desired manner to form a mixing chamber for the combustible elements. One of the side plates has a central opening 12 formingthe inlet or passage for air drawn into the chamber by the fan-beater, and the plate 11 has a tangential mixture outlet 13 at one side of its lower portion. A shaftis suitably journaled' in hearings in the axial line of the casing being-driven from a suitable motor (not shown), and carries the combined fan and heater which is composed ofla body '15 attached tothe shaft by a suitable collar 16, and a plurality of radial blades 17 being formed by a; curved body 18 and pro-f.

which carry. beater-heads at their ends. In the construction shown the faces or surfaces of the blades are disposed transversely-of the chamber andthe heads are spoon-shaped vided with angular side wings 19 and an oblique "end wingQOrso that as the-spoon rotates the air in leavingit is concentrated at its tipand moves at avry high velocity.

The beater-heads the rotation of the shaft their inner'concave portions and their wings-face theout.

are disposed so that in.

let 13 after they have passed the oil sup ply pipe. The casing is provided with an oil supply pipe 21 which enters its lowest portion and terminates a short distance above the inner surface thereof; the oil is fed to the supply pipe by any suitable means which will cause itto pass in a stream from the discharge end of the supply pipe when the device is in operation, and shut it off when the device is not operating.

When the shaft is rotated the blades move in the direction of the arrow in Fig. 1 and the suction createdby them aids todraw the oil stream more or less in the form of a spray into the chamber, and the beaterheads hit the stream of oil and break it up into fine particles so that it is atomized into a fine mist or vapor. The oil is thoroughly broken up and atomized into practically a gaseous state by the beateraction of the blades, and is mixed with the air which is drawn into thechamber by the fan-actionof the blades in sufficient quantity-to form a highly combustible mixture. The spoon-shaped end of the beater with its concave face leading causes the air in leaving it to be concentrated at the tip and move at a high velocity so that it is formed into a'powerful compact blast impinging directly on the oil inlet to produce an aspirating or suction action to spray the oil into the chamber and to intensify its vaporizing action in breaking the oil into fine particles. The combined eii'ect of the atomizingof the oil by itscontact with the spoons and of the high velocity of the air at the tip of the spoons produces a highly combustible mixture; the-spoons are shaped and proportioned so that the amount of air drawn in by their suction and mixed with the oil will give}: fuel mixture that is instantaneair which supports its combustion, their intermingling being completed in the outletpassage 13, and the mixture is then blown "by the fan-action of the bladesinto a suitable combustion chamber (not shown). The blades thus. form combined fan and heater elements that draw the air necessary for com- .bustion into the chamber, spray the oil stream into the chamber and beat itinto a 'fine mist-or gas, mix'the air and atomized oil into a highly combustible mixture, and

blow this mixture into the combustion chamber.

I claim:

1. In a device of the class described, a chamber having an air-inlet and an outlet passage, an oil supply pipe, a rotatable shaft, a plurality of fan blades on the sh alt in the chamber having forwardly-fileing spoon-shaped beater-heads formed at their ends.

2. In a device ofthe class described. a cylindrical casing having an air-inlet in one side and a tangential outlet in its lower portion, an oil supply pipe adjacent said outlet. a rotatable shaft, a plurality of fan blades on the shaft having forwardly-facing spoonshaped beater-heads formed at their ends and provided with Wings on the sides of their concave portions.

In a device of the class described, a cylindrical casing having an air-inlet in one side and a tangential outlet in its loxver portion, an oil supply pipe entering the lower portion of the chamber adjacent said outlet, a rotatableshaft, a plurality of fan 25 blades on the shaft having spoon-shaped beatei' lieads' formed at their ends and provided with angular side Wings and, oblique end Wings facing in the direction of their rotation.

H. A. TEDMAN. Witnesses: i R. J. HOWARD, W. P. SMITH.

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