US1652507A

US1652507A - Burner

Info

Publication number: US1652507A
Application number: US136775A
Authority: US
Inventors: Yost Arthur Addison
Original assignee: Individual
Current assignee: Individual
Priority date: 1926-09-21
Filing date: 1926-09-21
Publication date: 1927-12-13
Anticipated expiration: 1944-12-13

Description

Dec. 13, 1927.

A. A. YOST BURNER Filed Sept. 21. 1926 Patented Dec. 13, 1927.

UNITED sjiATEs PATENT OFFICE.

BURNER.

Application led September 21, 1926. Serial No. 136,775.

The invention to be hereinafter described relates to burners of the type in which liquid fuel, such as oil, and an atoinizing fluid, such as air under pressure, are fed to` a nozzle and on delivery therefrom the air meets the fuel, thereby atoinizing the same and promoting the combustion of the fuel.

The aim and purpose of the present invention is to provide an improved burner which will-atomize the fuel more thoroughly than heretofore, and produce a flame of proper whirl and spread for efficient combustion and heating effect. The fuel is conducted to a rotary cup which has an outward flar- '15 ing inner surface to which the liquid fuel clings under the influence iof centrifugal force. The-atomizing fluid is fed through.

30 `projected in 'crossing paths, and the fuel is` thoroughly atomize'd.l 1 i The cup is rotatedf by an electric motor,

4the speed of .which can be regulated so.Y that the cup maybe rotatedjat the proper speed for most efficient results. `The atomized fluid may be-forced to, and between the varies by afan which isalso rotated fby the motor. The construction is such that the combustion will occur adjacent to the end of the nozzle lmand the flame will have a desirable spread enabling it to reach a4 large area of heating surface. y v

. One good form-of the inventiontisshown in the accompanying drawing, wherein:

Fig. 1 is a View partly in section and partly in side elevation of a burner embodying the invention;

Fig. 2 on an enlarged scale is a side eleva- 5ow thereon; andv Fig. 3 is a fronttend View of the construction shown in Fig. 2.

Referring tothe drawing, the embodiment ofc'the .invention shown therein comprises a nozzle 1' cylindrical in form having an outlstand-ing Hange 3 secured by screw bolts 5 to a -fan casing 7. Mounted inthe nozzle 1 is a rotary cup 9 having an outwardlyflaring interior Surface 11. edon one end of a hollow sliaft 13 journalled in suitable bearings. The fuel is fed through a. pipe 15 from a suitable source of supply, and is4 delivered to a pipe 17 which extends through the hollow shaft 13 and has a tip 19 adapted to deliver the fuel to the inner flaring surface of the cup. The shaft 13 is directly rotated by an electric motor 21.

A fan 23 in the casing 7 referred to, is mounted fast on the hollow shaft 13, and air may be supplied to the fan through an inlet 25 in the casing 7. The air entering the inlet passesto the fan and isforced thereby into the nozzle and through the annular space between the cup and the inner surface of the nozzle.

Mounted on and projecting outward from Ithe rotary cup are a series of varies 27 of substantial length and preferably having their outer edges extending substantially to the` inner surface of' the nozzle. These vanes, in 'the present instance, are oblique with respect to the axis of rotation of the cup and cooperate with the outer surface ofk the cup and the inner surface of the nozzle to form a series of passages 29 through which the streams of atomizing fluid will This cup is niountdirection as indicated by the arrows iii Figs.

2 and 3. The liquid fuel delivered to the inner flaring surface of the cup will tend to cling to said surface under the influence of centrifugal force, and will be delivered with a pronounced whirl in a clockwise direction. The atomizing fluid sforced by the fan to the nozzle and through the passages between the varies will be divided thereby into 'streams which will be given a whirl in a contraclockwise direction due to the angular disposition of the vanes on the cup and due to the fact that the speed of the motor l A-is such that the fluid is forced through thetion of therotary cup having the varies.

higher than the speed of rotation of the cup. The fuel and fluid. meeting and whirling in opposite directions, `thoroughly atoinize and break up the fuel, cause efficient combustion and produce a` flame of desirable lateral sepread which can reach a large heating surlace.

nozzle between the vaines at a speed muchi The vanes on the rotary cup are solely for the purpose ofproducing a Whirl of the fluid in a direction for promoting efeient c0mbuston of the fuel and producing a flame of the desired character. These Yanes are not for causing the rotation of the cup which is produced by and under the control ot the electric motor, the speed of which may be varied as desired.

It Will be understood that the invention is not limited to the specific embodiment shown, and that variou deviations may be made therefrom Without departing 'from the spirit and scope of the appended claim.

That is claimed ise- In a burner 'for atomized liquid `fuel. the combination of a casing' haring' a nozzle, a shaft in the casing, n cup in the nozzle on said shaft, an electricmotor for rotating said shaft and cup, Whirl promoting varies of substantial length on and rotativey with the cup and projecting out therefrom toward the inner surface of the nozzle, moans for delivering' atomizing fluid to the passages formed between the vaines, and means to Conduct liquid Jfuel to the cup for delivery therefrom With a whirling motion, said runes being disposed to divide the fluid into Streams, positively Whirl Said Streams with the cup, and discharge, the Streams in a direction opposite to the direction o' rotation of the cup and the fuel leaving the same, thereby el'ectively to break up and atoinize the fuel.

ARTHUR ADDISON YOST.