US1641017A - Liquid-fuel burner - Google Patents

Description

Aug. 3 927, 1,641,017

E. l. STAPLES LIQUID FUEL BURNER Filed March so, 1923 7 I I Jar t g? Patented Aug. 30, 1927.

UNITED STATES EARLE I. STAPLES, or NEW YORK, N. Y.

. LIQUID-FUEL BURNER.

i Application filed March 30, 1923; Serial No. 628,828. 1

This invention relates to liquid fuelburn- (fans particularly to tip structures there- Heretofore, burners of this type have been so formed and designed that along penetrat- 1 fl me s'i r uce With ny yp s of furnace and boiler structures a long penetrating flame is highly objectionablein that its impingement against the back and side walls of the furnace or boiler is injurious to said walls and results in carbonation he eo Itis an object of my inventionto provide N p st uc r whe in. e, f e il be u i jected to an effective atomizingprocess be, fore it leaves the orifice of thetip andwhich said fuel will be placed in centrifugal motion and delivered in the-form of a cone shapedfinely atomized mistpandwhereby through. V the creation of this centrifugalmotion of the fuel, a velocity willbe created whichicauses he .fuelto rota e in thefl me endj ere y bring about Perfeet ombustio Wh le prod c ng an oval shaped ame axially of he umor of relat vely short length or p oper.-

Qn" a A further, Obje t of the nven on isto p o: vide a burner having means for. causing pe ect ac mize ion o thev fuelbyqentliifw gal action creating-a whirling motion of the fuel at the mixing ha1 nber of the tip and causing-the fuel to expand on leaving the orifice of the and to take thefform of'a' el ti e yhhort; lens hfs t clean flame of high intensity whose length is calculated withrespect to the length of'the furnace ."so as to prevent the heretofore serious objectionable impingement of the flame against so v through a portion of the burner and the tip".

the back and side walls of the furnace.

A still further object of the invention is to provide atip structure for liquid fuel burners which will be simple, effective for its" intended purpose and embodying relatively separable parts which can be, quickly separated and removed from or applied to the burner. structure as the occasion necessitates. Figure 1 is a sideview of a liquid fuel burner'showing my improved tip associated therewith. 7

' Figure 2 is a vertical longitudinal section with parts in elevation.

Figure 3 is aisectiontaken on line 3-3 of Figure 2.

Figure 4: is a view similar to Figure 2 oin a s eam and said body 13.-

the construction of anovel form of tip which may beflusfed in conjunction with various forms of liquid fuel burners- For this reason'I will not discuss in detail unnecessary parts or adj unctsofa burner but will merely describe such desirable featureswand parts that might be most advantageously used in conjunction with my invention.

The burner structure includes a regulating valve 5 whose stem 6 co-actswithaseat' 7 in the casings. Thecasi-ng is sub-divided by diaphragms or parting walls 9 into afuel space 10 and an air or steam space'll, the former leading to the valve seat and to a discharge nozzle 12. Extending. around the nozzle in spaced relation thereto is a cylindrical body 13 joined atlt' to the valve casing so that the inner end of the body opens directly to the air or steam space 11. The

valve casingis providedat one sidewith, a union l5adapted to operatively join a liquid fuel supply pipe with the space 10. A similar union 16onthe casing 8 i s adapted to or air pipewith the aforesaid Spae 1- i r a. T 1

The burner /structure is preferably provided with-a dial which co-acts with an indicating pointer 18 on the handle. 19 of the valve stem 6 so that one can. visually dete'rminethe" quantity of liquid fuel enter Ting the urner. I

The fuel nozzle'1 2 its end 20 terminatingwithin the body 13 and same I isdisposed axially thereof: The aforesaid body 13 is threaded exteriorly at 21 to accommodate an internal thread 22 on the member 23 of my improved burner tip 24. This 'burner tip isprovided with a reduced extension or neck 25 closed at its forward end by a baffle 26 and provided with a mixing chamber 27 axially positioned with re- 7 spect-to the body 13 and in open communicaconstruction is to cause fuel as it leaves the nozzle 12 to be directly discharging into the chamber 27 and a corresponding discharge into said "chamber of air or steam which passes from thespace between the nozzle 12 The restricted end 25 of 'the tip member 23 receives the internal thread 28 of a mating tip member 29 having a crown wall 30 and an annular wall or surface 51, the latter spaced from the walls of the forward end of the extension 25 and the former spaced trom the crown wall 26. This provides a. second chamber 232 and same is in open communication with the chamber 27 by means 01'' an annular set of orifices 83 in the forward extension on the member These orifices are each disposed on a tangent to the longitudinal axis of the chamberQT and when fuel and air are admitted under pres sure to said chamber 527 it scattered laterally. thereof by way of said orifices and discharged into the chamber coming into in'ipingement with the annular wall or surface 31 oi the member 2a. This sets up centrifugal motion of the fuel in the chamber 82 and brings about a perfect mixture of the 't'uelwith the air or steam which is employed as a mixture therewith. The fuel is thereby finely atomized before itleaves the tip. The

chamber 27 co-acts with the chamber 32 to further induce atomization of the fuel and the combination of the two chaniibers is quite desirable.

The member 2-1: is provided with an axia ly disposed orifice by means of which the atomized l'uel permitted to emerge from the tip. The relation of the oriiice 35 to the chamber 32 coupled with the tact that the fuel is made to take a centrifugal motion in the chamber 32, causes the fuel to initially assume the shape of a cone in which the atoms of fuel are in constant twirling motron. The fuel is permitted to expand as it leaves the orifice 35 and when the flame is in operation it takes an oval shape axially ot' the burner and is of relatively short length. In this manner a flame is produced in calculated proportion to the length o:l' the furnace or boiler with which it is associated. The flame. incident to the process of perfect atomization of the fuel is of high heat intensity and its full eiliciency can be satisfaetorily spent without its injurious direct impingement with the rear and side walls of the furnace. In this manner perfect combust m at the fuel is eil'ected. However, and as stated I am particularly consistent in the construction or" the tip per and merely make reference to a suitable means for delivering oxygen to the burner that is conducive to best results.

In the modified form of my invention shown in Figure at the member 23 has its wall 26 provided with an orifice 23 disposed in alignment with the orifice 35 in the member .Zel. In this form a long flame may be produced. The tip structure is otherwise identical with that described in the preferred embodiment Oil: the invention.

l'Vhile I have described what I deem to be the most desirable embodiment of my invent-loin it is obvious that many of the de tails may be Varied without in any way departing from the spirit of my invention, and I therefore do not limit n'iysel't to the exact details of construction herein set forth nor to anything less than the whole of my invention limited only by the appended claim;

What is claimed as new is:

In a liquid fuel burner, a cylindrical body with a tl'uel nozzle arranged therein and having one end disposed adjacent to said cylindrical body, a sleeve detachablysecured thereto and having a tubular nipple projecting therefrom. said nipple having a closed end, a plurality of tangentially disposed openings tormed therein and project i n through the side wall oi said nipple, said openings being in the same plane and a cap removzibly arranged on the nipple, said cap having its wall spaced therefrom and-provided with a central outlet opening.

In testimony whereof I have aliixed my signature.

' TEARLE I. STAPLES.

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