US1205563A - Spray-nozzle. - Google Patents

Description

C. L. PEPPER.

SPRAY NOZZLE.

Awucmow FILED MW. 29, ISI.

PatentediNuv. 21, 1916 v I V6 to by n n r w 1 ED STAS PATENT U-EFlfiill.

CHESTER L. PEPPER, OF CHELSEA, MASSACHUeJIiT'LTS, ASSIGNCRI 1 30 SC 'U'TTE ck KOEBTING COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPOELHLIOIZ O13 PENNSYLVANIA.

SPRAY-NOZZLE.

Specification of Letters Patent.

Patented Nov. 2-3,, 1916.

Application filed November 29, 1811. Serial No. 663,015.

5 hflassachusetts', have invented certain new and useful Improvements in Spray-Nozzles, fully described and represented in the. following specification and the accompanying drawings, forming a part of the same.

This invention relates to a spray nozzle of that class in which the liquid in passing through the nozzle is given a. spiral or ad vancing rotary. motion by means of spiral vanes or blades located Within the nozzle.

The object of the invention is to provide an improved nozzle of this kind of simple construction and eflicient in opca tion and whereby a spray of more solid, rather than hollow, conical form is secured.

A further object is to provide a nozzle which is adjustable for different spray angles and for securing the admixture of air with the jet before it leaves the nozzle or for a side discharge of water in fine jets.

The invention aims especially to provide a spray nozzle which shall show high efficiency.

when used for spray cooling of water and other liquids.

Nozzles made in accordance with the invention will be equally ellicient-wheu used for other purposes to which they are adapted, and they may be applied to a greatvariety of uses, for some ofwhich, however, it may be desirable to omit in the construction of the nozzles certain features of the Iinvcntiou. The accompanying drawings shone anozzle constriuatiou to embody the various featurcs of the invention in the prefcrrcil form. In said drawvlugsz-Figurc 1 is a central longitudinal. section of the nozzle except that the spiral varies for imparting rotary motion to the fluid are shown as they would appear in elevation. Fig. 2 is a view of the discharge or tip end of the nozzle showing the same partly in side elevation and paltly in central longitudinal section and with the tip piece in a dill'ercnt position of adjustucut from that shownin Fig. 1. Fig. 3 is a cross sectional view taken on line 30f Fig. 1.: i

Referring to the drawings, the nozzle tube as shown is made-up of a cylindricalpor-.

' tionfor body 10, and a tapered front portion to the interior of the nozzle.

pose piece. 11 which is gletael' able fr o n- :the body 10; as by having a screw thread connection therewith, to give ready access 1V ithin the nozzle tube there are a plurality of spiral vanes 12 formed to leave an unobstructed axial path or channel 13 for the water or other liquid. These vanes in the preferred construction shown are located within the cylindrical body portion 10 and are cast or otherwise formed integral therewith. extending from the side wall inward and end ing short of the aerial line so that their inner edges extend spirally about a central open space which forms an unobstructed path or channel for the free movement of the liquid.

The van I serve to give the advancing liquid the desir d rotary or spiralmotion, which, the velocity being, greatly increased as the liquid passes through the coiukractcd nose piece. causes theliquid as it leaves the nozzle mouth to break into a spray which advances from. the nozzle in the form or a: cone; and

the unobstructed central channel around which the vanes curve allows the central portion of the stream of liquid to move faster than the surrounding portions which encounter the varies. and so insures a solid mass of liquid in the tip portion oi? the zle with the result that the spray :Hl'l from the nozzle in the form of a con u nichis solid or substantially so as distingn" from a hollow conical spray suchras i duced by a nozzle having the spiral vanes mounted around a. central spindle.

The nozzle has a tip 15 which is adjustable for 'arying the spray angle. It is preterahly formed to provide flaring n'zouth as shown. which should he at in; rmrrowest point of slightly greater diameter than the internal diameter of the end or narrowest point of the-1108*." piece, and it is secured to the nose piece lay aninteriorly threaderl' flange 16 which screws onto the threaded end of the nose piece, so that-the tip may be adjusted to stand otl' more or less beyond the end of the nose piece by being; turned in one, direction or the other thermal. han the tip is adjusted to a position close to the end,

of the nose, a comparatively wide spreading spray is produced; and as the tip set farther oil". from the end-of the nose, a narrower .ul longer, or higher. spray results.

' The SIHICQ between the end of the nose piece and, the shoulder at the inner end of the flange of the tip forms an annular passage li llilll UlltlH lo create a partial vacuum 1h flu: pafisng't. whereby air entering the pas- .--.:lgu lhrough the openings 18 is sucked into ll'nliquid as it issues from the nozzle. The air so sucked into the jet causes the spray to hrcal-r up 'into liner particles and secures av more intimate n'lixturc of air with the s n'ayeil liquid. This is of advantage in many uses oi the nozzle, as for example, and rvqaacially. when the nozzle is used in spray cooling of water. In nozzles used for fountain also, this feature has the advantage of thc'jet or spray to appear much than without the sucked in air. lVhon the tip is screwed out to a position 11:. shown in Fig. 2%, for example, the passtage 17 is widened and the air suction is broken and wa ter will then enter the passage and escape in fine jets through the openings 18 and also through the openings 19 which with the tip in this position are open-to the passage.

It is to be understood that the invention is not to be limited to the exact construction shown. and to which the foregoing description has been largely confined, but that it includes ,changcs therein and modifications thereof within the; claims.

ll ha-t' is claimed is 1: A spray nozzle having a spray produc ing spiral vane for imparting rotary mo tion to the advancing fluid whereby the fluid is caused to" break into spray as it" leaves the nozzle, said vane extending inward from the nozzle wall and ending short of the axis of the nozzle so as .to leave an unobstructed axial nhannel or path to allow the central portion of the stream of liquid to advance faster-than the surrounding portion said axial channel or path being defined by the edge of the vane and being in open communication with the surrounding space through which the vane extends, and having a velocity increasing unobstructed tapering channel beyond the spiral vane.

2. A spray nozzle having a plurality of intercoiling spray producing spiriil lanes for imparting rotary motion to the advancing fluid whereby the fluid is caused to break into spray asit leaves the nozzle,

wanes extending inward from the n0zzle wall and ending short of the axis of the nozzle so as to leave an unobstructed axial. channel. or path to allow the central portion {of l the; stream/pf liquid;

to advance faster than the snrrrmnding por tion, said asial channel or path being defined by the edges of the vanes and being in open connninlication with the channels betn'een the veins, and having a velocity-increasing unobstructed tapering channel beyond the spiral vanes.

3. A spray nozzle having a spray producing spiral vane for imparting rotary motion to the advancing fluid whereby the fluid is caused to break into spray as it leaves the nozzle, said vane extending inward from the nozzle wall and ending short of the axis of the nozzle so as to leave an unobstructed axial channel or path to allow the central portion of the stream of liquid toadvance faster than the surrounding portion, said axial channel or path being defined by the edge of the vane and being in open coinrn'unication with the surrounding space through which the vane extends, and having a velocity-increasing unobstructed tapering channel beyond the spiral vane, and a suction inlet for admitting air at a point near the mouth of the nozzle.

4. 'A spray nozzle having a flaring mouth, an air suction inlet for admitting air to the jet at a point just beyond the point of narrowest cross-section of the nozzle, and means for imparting spray producing rotary motion to the "fluid advancing, through the nozzle tube whereby the fluid is caused to break into spray as it leaves the nozzle.

5. A. spray nozzle comprising a nozzle tube having a tapering nose portion, and a tip piece adjustable toward and from the end of the nozzle tube to vary the spray a11- gle and formed to provide a passage between it and the end of the nozzle tube to serve as an air suction passage when the tip piece is close to the end of the nozzle tube and as a discharge passage when the tip piece is moved away from the end of the nozzle tube.

6. A spray nozzle comprising a nozzle tube having a tapering nose portion and provided with means for imparting rotary motion'to fluid advancing therethrough, and an adjustable tip shaped to provide a passage between it and the end of the nozzle 11 tube to serve as an air suction passage when the tip 1s ad usted to a position close to the end of the nozzle tube and as a discharge passage when the tip 'is moved away from 12 by the tipmaybe adjustditoward and from the end of the nozzle tube and having openings to the atmosphere from the space between the end of the nozzle tube and the tip to serve as air suction inlets when the tip is close to the end of the nozzle tube and as discharge outlets when the tip is adjusted to a position fiuthel' away from the end of the nozzle tube.

In testimony whereof, I have hereunto set my ham}, in the presence of two sub- 10 seuhmg wltnesses. A

CHESTER L. PIEZPPLER.v

Witnesses JOSEPH. M. SHAFEER, SAMUEL K. HAMILTON.

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