US1441630A

US1441630A - Oil burner

Info

Publication number: US1441630A
Application number: US286755A
Authority: US
Inventors: William R Ray
Original assignee: Individual
Current assignee: Individual
Priority date: 1919-04-01
Filing date: 1919-04-01
Publication date: 1923-01-09
Anticipated expiration: 1940-01-09

Description

Jan. 9, 1923. 144mm,

W. R. RAY. OIL BURNER.

FILED APR. 1. 1919. 2 SHEETS-SHEET l.

N WW WWW; L2H,

ATTORNEY Jan. 9, 1923. L L-41,6300

V w. R, RAY.

OIL BURNER. FILED APR, 11 I919- 2SHEETS.SHEET Z.

ATTORNEY li e-tented Jarrod,

Application filed a ril 1,1919. Serial No. 286,755.

- To all whom it may concern Be it known that I, WILLIAM R. RAY, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented new and useful Improvements in Oil Burners, of

which the following is a specification.

This invention relates to oil burners, and particularly to improvements on the structure shown in my copending application entitled Oil burner, filed January 15,1919, Serial N 0. 271,287.

is to provide an oil burner of v by the combined action of centrifugal fogce,

steam and air, and particularly a note'l ployed .is induced by an induction nozzle which also serves the function of imparting a swirling movement to the air in a direction opposite to the rotation of the centrifu:

gal fuel atomizer. 1

Further objects will hereinafter appear. The invention consists of the partsand the construction, combination and arrangement of parts as hereinafter more fully described and claimed, having reference to. the

accompanying drawings, in which Fig. 1 is a side elevation of the burner,"

partly in section Fig. 2 is an end view of the burner; I Referring tothe drawings in detail, A

indicates an atomizing cup supported by a hollow shaft 2 which is journaled in ball bearings 3 supported'by-a centrifugal bearing member 4 which is secured by means of bolts 5 and an annular flange 6 to an end plate 7. Surrounding the atomizing cup A and the bearing member supporting the shaft '2, is a tapered nozzle 8. This nozzle is secured and supported by the end plate 7 or may be cast integral therewith, as shown.

Also supported by the plate member 7 is a fluid actuating turbine generally indicated with turbine blades 11. Any suitable form of fluid or steam under pressure is admitted to a steam chest 12 formed within the hous ing 9 and it escapes from said chest through a series of nozzle openings 13 mounted adcup is cut away, structure whereby the atomizlng air em plication referred to jacent the blades of the rotor. Rotary movement is thus imparted and the steam after escaping into-the housing 9 may be removed by means of an exhaust pipe or similar means not here shown. The rotor 10 is secured to the hollow shaft 2 and therefore serves the function of transmitting rotary cured at one end as at 15, in the forward QIIdOf the housing 9 and extends through the hollow shaft and enters the atomizing ,cup, as shown. Theportion entering the oil to freely escape into the cup and it is otherwise provided-with an end cap 17 which restricts the escape of oil and furthermore serves the function of evenly distributingthe same within the cup, as has previously been described in my co-pending aphereinabove.

The oil-to be the forward end of the pipe and is thus de-' livered to the atomizer or cup A. The high speed of resolution of the cup, which in actual practice often exceeds three or four thousand revolutions per minute," produces a centrifugal force which isso the oil forms a thin film on the interior surface of the cup. It is at the) same time forced outwardly, due to the flare or taper of the cup, and therefore dischargesrat right angles to the longitudinal axis of the cup when it leaves the outer annularlip of the cup. In fact, an annular sheet of oil is ejected which is soflhighly atomizedjthat it appears-more like a mist or fog than the vis to the atomizing cup by means; of a stationarypipe- 14. This pipe is se- One of the objects of the present invention the rotary type from which the oil is ejected and atomized atomized and burned, may -.be delivered to the stationary pipe 14: under as at 16, to permit the crude 1 great that cous oil originally delivered to the cup.

directly accomatomizplished by providing the tapering nozzle 8 and a secondary nozzle 18. This nozzle is arrangedat the rear end of the main nozzle 8 and at one side thereof, see particularly Fig. 2. l

Projecting into'the lower end of the nozzle 18 is a compound induction nozzle t, consisting of a. steam nozzle 19 and a pair of superimposed'nozzles' QO'and 21. Steam or other fluid under pressure delivered to the nozzle 19 and passing'through the nozzle 21,'induces a flow of air-therethrough.'

The air and steam escaping from the mouth of nozzle 21 and passing through the mouth of the exterior nozzle 22,;induees a secondary flow of air through the nozzle 22 and the air and steam finally discharging from the exterior nozzle 22 and entering the main nozzle 8 through the lower extension 18, induces an additional flow of air through the extension 18. A great quantity of air is thus induced by the action of the single fluid actuated nozzle 19 and as the combined mixture of steam and air" induced thereby through the.

nozzles

21, 22 and the extension 18, is delivered tovone side of the inain nozzle 18, it can readily be seen that a swirling movement will beimparted to the mixture before it is permitted to escape through the forward end of the main nozzle 8. The swirling movement thus imparted is in a direction opposite to the rotation of the atomizing cup A and the velocity imparted by the-steam nozzle 19 is so great that the mixture, when discharging from the main nozzle 8, will instantly pass through the atomized oil ejected by the cup A, thus carrying it forward into the furnace. It

will, at the same time, produce a secondary 40" at omizing action by further breaking up the 'oilparticles and it also produces ahomogeneous mixture of air, steam and oil which i is highly combustible and instantly ignited when enteringthe furnace.

The important feature of the present invention is the provisioniof a single induction nozzle which is adapted to induce a sufficient quantity of air to produce ahomogeneous combustible mixture of air and oil and which will also impart sufficient velocity to the air to permit this to act as a secondary atomizing agent.

The second important feature of -the invention is the positioning of said nozzle at one side of the main nozzle 8 so that a swirling movement. may be imparted to the air in a directionflopposite to. the rotation of the atomizing cup. This is of great importance as, it furtherin'creases the atomizing and mixing action desired,

YVhilea more or less specific form of induction nozzle is here-shown, I wish it understood that any type of injector may be employed; similarly, that the materials and finish of the several parts forming the burner may be varied to suit, different installments and applications.

Having thus described my invention, what I claim and desire to secure by Letters Patent is 1. The combination .with a centrifugal atomizer and means for delivering fuel thereto ,--of,-a main nozzle surrounding the atomizers ain nozzle being open at one end and cl (1; at the opposite end, an air inlet extension formed on the nozzle adjacent the closed end and positioned approximately at right angles to the longitudinal axis of the nozzle and atomizer and an induction nozzle mounted in the air inlet extension to induce a flow of air therethrough.

2. The combination with a centrifugal atomizer and means for delivering fuel thereto, of a main nozzle surrounding the atomizer, an induction nozzle connected with fluid under pressure through the induction nozzle to induce the flow of air through the main nozzle, said induction nozzle having its axis transverse to and at one side of the main nozzle axis so that a swirling movement in the direction opposite to the rotation of the-atomizing cup will be imparted to the air induced.

3. In an oil burner, a centrifugal atomizing cup, a hollow shaft supporting the cup, a nozzle surrounding the cup and shaft and enclosing the same, said nozzle being open at one end and closed at the opposite end, a bearing member supported by the nozzle in which the shaft is journalled, an air inlet extension formed on the nozzle adjacent the closed end, said air inlet extension being arranged at one side of the nozzle and at approximate right angles to the longitudinalhollow shaft and atomizer support-ed thereby, and means for delivering oil to the atomizing cup through the hollow shaft.

4:. The combination with a centrifugal atomizer, and means for delivering fuel thereto, of a main nozzle surrounding the atomizer, said main nozzle being open at one end and closed at the opposite end, said atomozer projecting through the open end of the main nozzle, an induction nozzle mounted adjacent the closed end of the main, nozzle, and means for passing a fluid under pressure through the induction nozzleto induce a flow of air through the main nozzle.

5. The combination with a centrifugal atomizer, and means for delivering fuel thereto, of a main nozzle surrounding the atomizer, said main nozzle-being open at one end and closed at the opposite end, an induction nozzle mounted adjacent the closed end of the main-nozzle, and means for passing a fluid under pressure through the iniganeaio nected with the nozzle for delivering a cur-' rent of alr, said means being disposed between the ends of the nozzle to impart a swirling movement to the air as it discharges through the nozzle and in a direction oppo-.

site to the rotation of the atomizer. v

7.1m a burner of the character described, a centrifugal atomizer, means for delivering fuel thereto, a nozzle surrounding the atomizer, said nozzle being opened at one end and closed at the other end, and means connected to the side of the nozzle forwardly of the closed end thereof for delivering a fluid under ressure to the nozzle to induce the flow of air through the nozzle.

8. In a burner of the character described, a centrifu al atomizer, means for delivering fuel t ereto, a nozzle surrounding the atomizer, said nozzle. being opened at one end and closed at the other end, and means connected with the nozzle at one side thereof adjacent totheclosed end thereof for delivering a current of air in a direction at right angles to the longitudinal axis of the nozzle to impart a swirling movement to the air as it discharges through the nozzle and at a direction opposite to the rotation of the atomizer. v

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

' WILLIAM R. RAY.

Witnesses: v

JOHN H. Hrnnmo, I W. W. Heater.