US2342050A

US2342050A - Fog stream nozzle

Info

Publication number: US2342050A
Application number: US452581A
Authority: US
Inventors: Gordon F Hurst
Original assignee: Individual
Current assignee: Individual
Priority date: 1942-07-28
Filing date: 1942-07-28
Publication date: 1944-02-15
Anticipated expiration: 1961-02-15

Description

Feb. 15, i944. G. F. Hums'ry FOG STREAM NOZZLE Filed July 28, 1942 codici! iiOill rammed Feb. 1s, 1944 UNITED STATES PATENT OFFICE This invention relates to a fog stream nozzle, or as it is sometimes called, a tog nozzle.

One of the objects of this invention is the provision of means in a fog nozzle that will enproducing aperture or apertures. and the impurities are ejected from the screen and nozzle through such other aperture. This result is accomplished by structure that is simple, economical able the operator thereof to maintain the maxi- 5 to make, compact and reliable. mum eiliciency oi the nozzle for producing a fog- Fig. l is an elevational view of the nozzle. like spray irrespective of insoluble material in Fig. 2 is a sectional view taken along line 2-2 the fluid or liquid being conducted to the nozzle of Fig. 1. that would ordinarily impair the eiliciency of the In detail, the nozzle illustrated in the drawing nozzle. l comprises an elongated body I, which may be a Another object is the provision of a nozzle that, casting, and which body is provided with a pair of when connected with a source of fluid under

presseparate passageways

2, 3 therein, extending lonsure. has means for maintaining the fog producgitudinally thereof. For convenience of descriping discharge aperture or apertures clear of fortion, the passageway 2 will be called the upper eign material in the fluid conducted to the nozzle l5 passageway, and passageway 3 will be called the and for electing Such particles from the nozzlelower passageway since this is their relation as A still further object is a fog nozzle provided shown in Fig. 2., although it is to be understood with a discharge aperture or apertures for ejecthat this relationship is not essential to the action oi a iluid therefrom, and which nozzle has a complishment of the desired results. In actual screen therein for obstructing the passage of foruse the position of the passageways may be rereign solids of predetermined size te such aperture versed from that shown in the drawing or they or apertures, and which screen is so arranged in may both be ln any plane between horizontal and the nozzle as to be capable of being cleared of vertical. such solids by uid passing through the nozzle The upper passageway 2 has a co-axial inwithout dismantling the nozzle or any part thereteriorly threaded inlet opening 4 at one end and 0f and WithOllt mOVinB the screen or creating a a co-axial discharge opening 5 at the other end. trai) or eddy space Where impurities might ledge or Adjacent the inlet opening a portion of the pasbe retained in the nozzle. sageway is enlarged to provide a substantially Other Objects and advantages will appear in annular portion which constitutes a chamber 5 the description. between the inlet opening 4 and the passageway The fog producing discharge aperture or aper- 2, communicating inter-axially with both. tures in a fog nozzle are necessarily relatively Aradially, inwardly projecting, annular angeI small, since the fluid, such as water for example, is formed in body I at the juncture between is broken up to fog-like form at or adjacent chamber 6 and inlet 4 and forms one side of said such apertures. Since one of the principal uses chamber. The side of flange 'I that faces into 0f a fog nozzle is in lighting res. it is obvious said threaded inlet 4 provides an abutment for that failure of the nozzle to produce the desired a radially outwardly projecting flange 8 that is fog-like spray may well result in destruction formed on the larger diameter end of a frustoof the property that would otherwise be saved. conical screen 9, and which screen extends across With my invention, the nozzle may be quickly the open side of channel 6. and thoroughly cleared of impurities-that would The smaller diameter end of screen 9 ts into impair the efliciency of the fog creating function an annular recess formed by a tapered enlargeof the nozzle before the impurities reach the fog ment in the end of passageway 2 adjacent champroducing discharge apertures, and the nozzle ber 6. 'Ihus it is seen that the inner sides of also provides means for electing a solid stream 5 screen 9 extend convergently from inlet 4 through of water or fluid when such stream is needed. chamber 8 to passageway 2. This result of maintaining the fog producing A plug valve Ill is provided in body I and exapertures clear of impurities is accomplished by tends across the upper passageway 2 adjacent a stationary compact screen of perforated metal chamber 6. This valve has a handle II proor wire mesh. having a relatively large capacity jecting from one side of body I for manually to pass iluid through the openings so as to proturni the valve from a position closing passageduce the proper fog stream, and which screen may way 2 flow of duid therethrough to a position be quickly cleaned of impurities by a momentary opening said passageway and vise versa. ejection of the iluid from the nozzle through an- The lower passageway 3 communicates at one other aperture or discharge opening than the fog end with the chamber G at a point spaced radially outwardly of screen 9, and the opposite end of said passageway 3 communicates with the inner, spaced ends of one or more pairs of relatively small diameter, outwardly converging fog-spray discharge passageways I2.

While rotary plug members I3, I4 are indicated in the drawing extending across passageways I2, and respectively provided with transverse openings coaxial with passageways I2, it is to be understood that insofar as this invention is concerned, the said members may be integral with body I and in the description and claims the passageways I2 include the openings in the members I3, I4 as portions of said passageways.

The passageways I2 are arranged so that the paths of streams of water or fiuid passing therethrough will intercept at a point relatively close to the body I and adjacent the convergent ends of said passageways to produce the fog-like spray.

Adjacent the chamber 6 a plug valve I5 is provided in passageway 3. This valve is mounted in body I for rotation to open and close passageway 3 to flow of fluid therethrough from the chamber 6 upon manual manipulation of handle I6 on said valve. Handle IB projects from the side of body I opposite the handle I I on valve I0.

In operation, assuming the inlet 4 is connected with a fiuid pressure line and valve I is closed while valve I5 is open, the fluid will pass through the perforations in screen 9 and into chamber 6, and from chamber 6 into passageway 3 forejection through the discharge apertures I2. Any material in the fluid that would tend to block up passageways I 2 is caught by the tubular screen 9, and never passes to said passageways I2. As soon as it is apparent that the fog stream is impaired by material caught by the screen, the operator merely momentarily opens valve IIJ, and as inlet 4, screen 9 and passageway 2 are coaxial, the fluid will all tend to be discharged from passageway 2, which is of sufliciently large diameter to freely conduct the foreign material therethrough. The angular relation between the inner sides of screen 9 on which the foreign matter collects and the axis of the screen is such that the dynamic pressure of the fluid moving axially through the tubular screen and into passageway 2 will forcibly remove any matter that might tend to stick in the perforations of the screen. It

is obvious, of course, that a stronger cleaning action can be produced by merely closing valve I5 when valve II) is opened. to thereby cause all of the fiuid entering inlet 4 to be passed axially through screen 9 and passageway 2.

By manipulation of valves I0, I5, the operator may eject a full solid stream from passageway 2, or a combination of a fog stream and a solid stream as desired.

While I have shown a particular arrangement of passageways I2 for producing a fog stream, it is to be understood that any desired type of fog creating discharge apertures may be used. Also, while screen 9 is preferably of -generally frustoconical form as illustrated, it may be cylindrical.

The inside diameter of inlet 4 is slightly greater than the outside diameter of flange 8 on screen 6, making it easy to remove screen 9 upon uncoupling the inlet from the source of fluid to be ejected from the nozzle. Thus, any desired mesh screen may be quickly positioned in the body I or replacement of damaged screens may be as easily effected.

Having described my invention, I claim:

1. A nozzle of the character described, comprising a body provided with an inlet opening in one end, a tubular screen and a first passageway in end-to-end coaxial alignment with said screen positioned between said inlet and said passageway and with the end of said passageway remote from said screen opening outwardly of said body; a second passageway in said body offset to one side only of said first passageway provided with a fog producing discharge aperture opening outwardly of the body at one of its ends and the opposite end thereof communicating with the outer sides of said scree alve means in said first passageway operablenihom'ng'saidirst'passageway to thereby cause fluid entering said inlet to pass through said screen to said second passageway for ejection from the latter.

2. A nozzle of the character described, comprising a body provided therein with an inlet opening in one end, a tubular screen, and a first passageway in end-to-end coaxial alignment with said screen positioned between said inlet and said passageway and with the end of said passageway remote from said screen opening outwardly of said body; a chamber formed in said body, the walls of which are spaced radially from said screen; a second passageway in said body provided with a fog producing discharge aperture opening outwardly of the body at one of its ends and the opposite end thereof opening into said chamber; a valve in said first passageway for closing said first passageway to thereby cause fiuid entering said inlet to pass through said screen to said second passageway and for opening said rst passageway to direct flow of fiuid axially through said screen to said first passageway; said screen being of substantially frustoconical shape with its larger diameter end positioned adjacent said inlet and the major portion of said screen that extends between said inlet and said first passageway being unobstructed at all times to passage of uid therethrough into said chamber.

3. A nozzle of the character described comprising a body provided with an inlet opening in one end, a tubular screen, and a first passageway in end-to-end coaxial alignment with said screen positioned between said inlet and said passageway, and with the end of said passageway remote from said screen opening outwardly of said body; a second passageway in said body provided with a fog producing discharge aperture opening outwardly of the body at one of its ends, and the opposite end thereof communicating with the outer sides of said screen; valve means respectively positioned in said first passageway and in said second passageway for opening and closing either or both passageways to passage of fluid therethrough as desired, the valve means in said first passageway being adapted to cause fluid entering said inlet to pass through said screen to said second passageway for discharge from said discharge 3 aperture when the valve means in said first pas- 1 sa-geway is closed and the valve means in said second passageway is open.

4. A nozzle of the character described, comprising an elongated body provided with an inlet at one end, a tubular screen, and a first passageway in end-to-end coaxial relation disposed longitudinally of said body with said screen disposed between said inlet and said passageway and with one end of said passageway opening outwardly of the opposite end of said body; a second passageway in said body offset to one side only of said first passageway and extending substantially parallel with said ,rst passageway, provided with a fog producing discharge aperture opening outwardly of said opposite end of said body; said screen being spaced at its sides from the material of said body and the end of said second passageway opposite its fog producing aperture, opening into the space around said screen; valve means carried by said body for controlling the flow of fluid entering said inlet to one or the other of said rst and second passageways as desired, and the ends of said screen being in direct substantially sealing relation with the walls of said inlet and said rst passageway whereby the only access of fluid to said second passageway from said inlet is through the perforations in said screen.

5. A nozzle of the character described, comprising a body formed with an inlet opening for fluid in one end thereof; a tubular open-ended, screen spaced within said body in coaxial alignment with said inlet and with one of its ends secured in said inlet; a chamber at one side of the latter formed in said body enclosing said screen with its walls spaced therefrom around the sides of the screen; a passageway communicating at one of its ends with said chamber and provided at its opposite end with a fog producing discharge aperture opening outwardly of said body; means for openk ing and closing said screen to flow of fluid from said inlet axially therethrough and radially thereof through its perforations as desired, said means including a valved conduit opening at one end at all times directly into the open-end of said screen opposite said inlet opening.

6. In a construction as defined in claim 5, said screen being of generally frusto-conical shape with its larger diameter end in said inlet, and

said inlet opening being of a diameter greater than the largest diameter of said screen whereby the latter is removable from within said chamber through said inlet opening.

7. A nozzle of the character described, comprising an elongated body having therein an openended, through conduit extending longitudinally therethrough from end to end thereof; a section of the walls of said conduit spaced from its ends being perforated; a passageway formed in said body communicating at one of its ends with said section and having a fog producing discharge aperture at its opposite end opening outwardly of said body adjacent one of the open ends of said conduit; valve means in such body spaced from said section for closing and opening the portion of such conduit at one end only of said section to passage of fluid therethrough, and the portion of said conduit at the other end of said screen being threaded for connection with the fitting of a fluid pressure line, said perforated section being of progressively smaller diameter from the end thereof adjacent said last mentioned threaded portion of said conduit toward the other portion of said conduit, and said other portion of said conduit being of a diameter about equal to the smallest diameter of said perforated section.

8. A fog nozzle provided with a fog producing discharge aperture at one end, a passageway therethrough communicating with said aperture at one of its ends, and an inlet opening in the opposite end of said nozzle in communication with the other end of said passageway; a screen in said body interposed between said inlet and said aperture adapted to pass a liquid from said inlet at right angles to said screen and in one direction through its perforations for passage thereof to said aperture; said screen being positioned with its sides extending generally in the same direction as the axis of said opening, and means including a valved passageway having its valved passageway will flow over the walls of said screen substantially parallel with the latter for clearing foreign material from said walls, the adjacent connected ends of said valved passageway i and said screen being of substantially the sameA diameter.

9. A nozzle of the character described comprising an elongated body having a pair of substantially parallel passageways therein opening outwardly of one end of said body at one of their corresponding ends providing for discharge openings at said one end; an inlet opening formed in the opposite end of said body co-axial with one passageway of said pair; a portion of said one passageway adjacent said inlet being enlarged to provide a substantially annular chamber between said inlet opening and said one passageway communicating inter-axially between said pair of passageways; a frusta-conical screen co-axial with said inlet opening connected with the sides thereof at its larger diameter end and connected with the adjacent end of said one passageway at its smaller diameter end; the outer sides of said screen between its ends being fully exposed to define the radially inner wall of said annular chamber, and the adjacent ends of said screen and said one passageway being of substantially the same diameter for unobstructed flow of fluid from said screen into said latter passageway.

10. A nozzle ofthe character described comprising an elongated body having a pair of substantially parallel passageways therein opening outwardly of one end of said body at one of their corresponding ends providing for discharge openings at said one end; an inlet opening formed in the opposite end of said body co-axial with one passageway of said pair; a portion of said one passageway adjacent said inlet bein-g enlarged to provide a substantially annular chamber between said inlet opening and said one passageway communicating inter-axially between said pair of passageways; a frusta-conical s n co-axial with said inlet opening connected w1 he sides thereof at its larger diameter end and connected with the adjacent end of said one passageway at its smaller diameter end; the outer sides of said screen between its ends being fully exposed to dene the radially inner wall of said annular chamber, and the adjacent ends of said screen and said one passageway being of substantially the same diameter for unobstructed flow of fluid from said screen into said latter passageway, a pair of valves respectively positioned in said passageways and actuatable independently of each other for opening and closing either or both 0f said passageways to flow of fluid therethrough as desired.

11. A nozzle of the character described comprising an elongated body having a pair of substantially parallel passa-geways therein opening outwardly of one end of said body at one of their corresponding ends providing for discharge openings at said one end; an inlet opening formed in the opposite end of said body co-axial with one passageway of said pair; a portion of said one passageway adjacent said inlet being enlarged to provide a substantially annular chamber between said inlet opening and said one passageway communicating inter-axially between said pair of passageways; a frusto-ccnical screen co-axial with said inlet opening connected with the sides thereof at its larger diameter end and connected with the adjacent end of said one passageway at its smaller diameter end; the outer sides of said screen between its ends being fully exposed to define the radially inner wall of said annular chamber, and the adjacent ends of said screen and said one passageway being of substantially the same diameter for unobstructed iiow of fluid from said screen into said latter passageway, the

inner sides of said inlet opening being threaded outwardly of the end of the screen that is connected with said inlet for threadedly securing a threaded fitting of a iiuld pressure line therein, and for securing said screen stationary between such tting and the end of the passageway that is connected with the smaller diameter end of said screen.

GORDON F. HURST.