US2123826A - Nozzle - Google Patents

Description

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E. J. DILLMAN NozzLE Filed May l0, 1935 atented july 12, 1938 NOZZLE `Application May 10, 1935, Serial No. 20,721

7 Claims.

My invention relates generally to nozzles and more particularly to water discharge nozzles.

One of the objects of my invention is, to provide a new and improved water discharge nozzle of the A type having provision for maintaining the nozzle discharge orifice free of clogging matter.

Another object of my invention is to provide a liquid discharge nozzle havingautomatica'lly operable cleaning mechanism for the discharge orice and to provide novel pressure relief means to release trapped water-in the nozzle tending to prevent operation of the cleaning mechanism.

Another object of my invention is to provide a durable nozzle structure of the above mentioned character which is emcient in operation and economical to manufacture and yet simple in construction both as regards its parts and their assembly. l

The invention consists in the improved construction and combination of parts, to be more fully described hereinafter and the novelty of which will be particularly pointed out and distinctly claimed.

In the accompanying drawing, to be taken as a part of this specication, I have fully and clearly illustrated a preferred embodiment of my in-l vention, in which drawing- Fig. l is a View showing how myA improved nozzle may be mounted to produce asuitable moisture spray;

Fig. 2 is a view shown in longitudinal section taken centrally through my improved liquid discharge nozzle, and

Fig. 3 is a perspective view of my nozzle as seen looking toward the discharge end thereof.

Referring to the drawing, and more particularly to -Fig, 1, the numeral I designates generally a liquid discharge nozzle mounted on a vertical wall 2 of a receptacle 3, which receptacle has, in the present instance, an angularly disposed baille wall 3B against which the nozzle I is arranged to direct a stream of liquid, indicated at 4, to produce a fine sprayr-or mist. Among other uses, the nozzle I, receptacle 2 and baille 3a may be employed in a, humidifying apparatus (not shown) for introducing moisture into air passing through the apparatus, or the nozzle and bale may be arranged with a foodstuff display receptacle for spraying foodstuffs contained therein 30 to keep the same in a fresh condition. In.the present instance, the wall 2 of the receptacle 3 is lformed with an apertured boss 5, which is\in ternally threaded and into which is screw-threaded one end of a water supply pipe 6. The water 5 supply pipe 6 extends through the wall 2 and projects into the receptacle wherein it is connected to the discharge nozzle I, which, in the present instance, is supported by the water supply pipe. The receptacle 3 is also provided with a drain pipe 6a which opens into the receptacle 5 through and extends downward from the bottom wall thereof. The nozzle I may be provided with a tubular extending portion l, defining the inlet to the nozzle and which may be kexternally 'threaded for threading into the water supply pipe 10 6. A suitable tting or packing nut 'la may be provided to insure a leak-proof connection between the water supply pipe and the nozzle.

Referring now to Fig. 2 in which the construction of the nozzle I is shown, the nozzle 15 includes a sectionally constructed or two-part casing comprising, in general, a body portion or base member 8 and a removable end wall cap or closure member 9 therefor which closure member forms the discharge end of the nozzle casing. 20 One Wall of the body I is preferably recessed as at ICI and the inner side wall delning the recess is preferably circular in contour and stepped having a portion II of relatively small diameter which extends outwardly from the recessed wall 25 II)\a relatively short distance to a point from which a portion I2 of relatively large diameter leads out of the body thus forming an outwardly facing annular shoulder I3. The portion I2, of larger diameter, may be internally threaded for30 receiving theexternally threaded closure member 9. The closure member Il extends into the portion I2 of larger diameter and the inner end of the closure member preferably has a reduced portion as at |311. Clamped between the shoulder I3 35 and the inner end wall of the removable closure member 9, there is a movable wall means or diaphragm I 4 which is preferably a pan-shaped member having al circumferential reinforcing flange I5, preferably, the pan-shaped diaphragm 40 telescopes snugly over the inner reduced end portion I3 of the closure member 9 and is carried thereby.` One side of the diaphragm I4 cooperates with the recessed wall Ill and the inner side wall portion II, of smaller diameter, to pro- 45 vide a chamber I'I. 'I'he inner end wall of the closure member 9 is preferably recessed, as at I8, to provide clearance for movement of the diaphragm I4 and to also provide a bearing surface I9 around its periphery for bearing against a 50 marginal edge portion 20 of the diaphragm. 'Ihe recessed wall I8 cooperates with the inner side wall, defining the recess, and the adjacent side of the diaphragm I4 to provide a chamber |83. The diaphragm I4 is preferably of the type having 55 a circularly extending bent portion 2l spaced from the peripheral edge of the diaphragm to provide the marginal bearing portion 26, and which circular bent portion defines a central movable portion or diaphragm proper 22. As is well known in diaphragms of this type, the central movable portion 22 is movable without such movement being transmitted to the marginal edge portion 26, such movement taking place in the bent portion 2l and the diaphragm havinga snap action when moved over center.

The closure member 9 is formed with a protuberance or extension 23, centrally thereof, which extends outwardly and preferably beyond the outer wail 24 of the closure member, as shown. The outer wall of the closure member 9 is also preferably recessed as at 21, the inner side wall defining the recess preferably being tapered or flared outwardly alongits entire periphery for inducing drainage of water therefrom. A pluralityof apertures 26 are provided in the wall 21 and extend therethrough so that chamber I3 is open to atmosphere to permit escape of air therefrom which otherwise if, trapped therein would resist outward movement of the diaphragm I4. The outer side wall of the protuberance 23 may have a hexagon or other suitable shape for gripping with a tool, such yas a wrench to assemble and/or dissemble the body I and closrre member 9.

The protuberance 23 is provided with centrally disposed bores longitudinally thereof including bore 30, which leads into chamber I6 and bore 3I adjacent to and leading out of the outer end of the protuberance, which bores are separated by an inner transverse wall 32. In the transverse wall 32, there is a centrally disposed aperture 1n the form of a bore 33 which is preferably in'alignment with the center of the diaphragmf I4. vCarried by the diaphragm I4 and supported for reciprocal movement in the bored transverse wall 32 of the closure member 9, there is a tubular member 34. The tubular member 34 has a bore 36 leading out of the outer end and a bore 31 leading into chamber I1, the bores being separated by a transverse wall 35 having an aperture 36 centrally therethrough constituting the nozzle metering oriiice. Preferably the inner wall of bore 31 tapers to the orifice 36 .as at 38. The tubular member 34 may be xed for movement with the diaphragm I4 in any suitable manner. In the present instance, the tubular member 34 is formed with an external annular flange 40 the inner side of which is arranged to bear against the adjacent side of the diaphragm. The diaphragm I4 is provided with a central aperture providing open communication from chamber I1 through bore 31 and the orifice 36 for the ow of Water or other liquid therethrough. The inner end of the tubular member 34 extends through the central aperture in the diaphragm and is' peened over, as at 4I, to connect the diaphragm and tubular member together. Within bore 30 there ls a coil spring 42 having one end bearing against the transverse wall 32 and the other end against the flange. 4II of the tubular member. The spring 42 is held under compression during flow of water through the nozzle by the force of the water acting against the diaphragm I4 and expands to move or ilex the diaphragm inwardly upon discontinuance of water ow. g

In coaxial alignment with the orifice 36 and extending from chamber I1 out of the rear of the body I, there is a passageway which is formed, in the present instance, by concentric bores 46,

46 and 41 respectively decreasing in diameter from the outer and relatively larger bore 45 to the relatively small bore 41 leading into chamber I1. Bore 46, intermediate bores 45 and 41, is internally threaded to receive an externally threaded portion 50 of a cleaner member, the portion 50 also serving to close the bore 46 to the passage of liquid therethrough to bore 41. An extension portion .5I which may be integral with the threaded plug 50 is of reduced diameter and extends through the bore 41 into the chamber l1 and is formed with a reduced portion 52 in the form of a pin which extends into bore 31 and is in coaxial alignment or registration with the orifice 36. Preferably the orifice 36 is only slightly larger than the diameter of the cleaning pin 52 and if desired, the relative dimensions of the orifice and pin may be .0135 and .012 respectively. The outer and larger bore 45 is provided in the extension portion 1 to which the water supply pipe is connected and leading from inlet bore 45, and in this instance, from one side thereof or upwardly, there is a bore 53 which connects bore 45 with a relatively larger bre 54, the latter bore preferably being angularly disposed and leading downwardly into chamber I1. The bore 54 leads out of the body toward the rear thereof and is internally. threaded for receiving an externally threaded closure member or plug 55. The plug 55 is provided with a central bore 56 longitudinally therethrough from which extend lateral bores 51 connecting bore 56 with an annular chamber 56 formed by an annular slot 59 and the inner wall of bore 54, the annular chamber being in communication with bore 53. The outer end of the plug 55 is formed with a ianged head 59 which may be hexagonal or other suitable shape, and between the ilanged head and the body there may be provided a washer 60. On the inner end of the plug, there is car ied a screen member 6I, the inner end wall of th plug being provided with a circular groove for receiving the screen member which may be secured therein such as by means of solder, as at 62.

In the body I, there is provided a by-pass 65 in the form of a bore which communicates with chamber I1 and leads out of the rear wall of the body, the bore extending substantially parallel with the central bores 45, 46 and 41. The bore 65 is internally threaded to receive an externally threaded tubular shaped valve seat member 66.

the tubular member 66 having a head or annular flange 61 for abutting the recessed wall I0 of the body I. The tubular member 66 has a reduced bore 66 through its head which constitutes the valve seat or port and which cooperates with the conical face 10 of a needle valve 1I to control ilow of liquid from chamber I1 through the bypass passageway. Preferably the size of the valve seat and the cooperating conical face 10 of the needle valve are made such that the valve projects through the head of the member 66 and beyond its end wall into chamber I1, the end of the valve being substantially pointed and extending to a point in close proximity to the diaphragm when the same is in an outwardly flexed position as shown in Fig. 2.

The needle valve 1I is slldably mounted for reciprocal movement in the tubular valve seat member 66 and may be provided with a number of spaced and longitudinally extending grooves 12 on its outer wall to provide passagewaysffor the passage of water from chamber I1 when the valve against its seat or in closed position during discharge of water from the nozzle by means of a coil spring 13 under compression. The discharge end of the by-pass has a reduced bore portion 'l providing an inwardly facing shoulder or seat for one end of the spring 13. The valve ll is provided with a rearwardly extending reduced portion providing an abutment for the other end of spring ll.

The threaded portion 5@ oi the cleaner member may be provided with a slot in its outer end for thev reception of a screw driver which may be inserted in bore d5 and by means of which the cleaner member may be rotated and thus be longitudinally adjusted relative to the oiiii'ce 36, as desired. The by-passvalve seat member t6 yalso may be adjusted longitudinally by rotating the member 66 and by such adjustment the pointed end of the valve may be positioned closer to or farther away from the diaphragm lil as may be desired.

The operation of the nozzle is as follows:

When water or other liquid is not owing through the nozzle, the diaphragm is iiexed inward and the cleaning pin extends into and closes the orice 36. When the liquid, which may be water, is turned on, it enters the inlet bore d5 from whence it passes through ,bore 53, annular passage 58, radial bore 5l and into the central bore 56 of the closure plug 55 and then through strainer 6l into chamber ll. 'I'he pressure of the water acting against the diaphragm in chamber ll moves or exes the diaphragm outwardly to the position shown in Fig. 2, inwhich position the orifice member, carried by the diaphragm is moved relative to the pin so that the orice is open. Water flows from chamber il into bore 3l of the orifice member 36 and through the orice 3G wherein it is metered and discharged therefrom in a small jet or stream. While water ows through the nozzle structure, the diaphragm and oriiice member 3d are held in the outward position above mentioned and in this position the spring 42 is placed and held under compression having stored therein a potential force tending to return the diaphragm to its normal or inward position. Upon discontinuance of water iiow through the nozzle structure,A the pressure of the water in chamber Il decreases and the spring expands and moves the diaphragm and orifice member toward chamber ll. 'The pointed end of the valve 1|, the orifice member 3d and the pin 52 are relatively arranged so that .lust before the orifice 36 receives and is closed by the pin 52, the `diaphragm engages and unseatsthe valve 1i. Thus the water that is trapped in chamber l1 and which would otherwise prevent inward movement of the diaphragm when the orifice 36 is closed is permitted to escape therefrom through the by-pass. The pressure exerted by the water in chamber l1. opposing inward movement of the diaphragm, now being relieved by the opening of the bypass, the diaphragm under the force of the expanding spring moves inwardly with less opposition and aids in expelling the water through the by-pass.A The by-passed water is discharged from the rear end of the nozzle casing and is caught in the receptacle therebeneath from whence it drains through outlet pipe lia to the sewer. Upon removal or diminishing of the resisting force of th'e water to the inward moverment of the diaphragm, the diaphragm and consequently the orifice member carried thereby can return to normalV position and upon doing so the orice 36 is brought into the plane of the xed cleaning pin which then extends through the oriiice and dislodges Vany foreign matter which may have collected therein.

From the foregoing description it will now be apparent that I have provided a new and improved nozzle of the type having provision for maintaining the orifice free of clogging matter. By the provision of a by-pass for the escape of trapped liquid in the nozzle, it will be appreciated that the diaphragm will be permitted to return to normal position and in so doing effect the cleaning of the nozzle orifice. that I have provided a discharge nozzle in which the diaphragm, orifice member and the actuator or spring are carried or supported by a readilyr What I claim and desire to secure by LettersA Patent of the United States is:

1. A device of the character described, comprising a body portion through which liquid ows and having a recessed wall, a removable wall means disposed in said recess, Ya movable wall means clamped between the recessed^wal1 and said removable wall means, and cooperating with `said recessed wall to provide a chamber into which liquid flows under pressure for discharge therefrom, said movable wall means having a normal position and being movable .in one direc-` tion by the force exerted by the liquid, an orice member carried by said movable wall means and slidably supported in said removable wall means, a spring disposed in said removable wall means for moving said movable wall means and orice member back to normal position upon cessation of ow, a cleaner member registering with the oriiice of said orifice member and arranged to extend thereinto upon return of said movable wall means to normal position whereby to clear said orifice of 'clogging matter, a by-pass for bypassing liquid from said chamber, and a valve member closing said by-pass during ow of liquid and movable by movement of said movable wall means toward normal position to open said bypass upon cessation of flow.

2. A device of the character described, comprising a casing having an 'internal chamber, a pressure responsive movable member sealed along its marginal portion to said casing and forming a wall of said chambersaid member having an opening therethrough, a nozzle member secured to said movable member and having a discharge port communicating-with said opening, said nozzle member having aportion projecting from said responsive member, means rigid withsaid casing and having guide means engaging said projecting.

It will also V,be seen ing portion throughl said port, said responsive member moving under force of fluid pressure in said chamberin opposition to said normally acting means to move said port away from said cleaning portion so that fluid can discharge from `prising. a pairof members rigidly secured and sealedv together, a movable pressure responsive member within said casing and positioned between said casing members, a nozzle element having a bore therethrough, one of said casing members having lateral engagement with and supporting said nozzle element against lateral movement, said nozzle element having a portion of its bore of reduced cross-section to provide a discharge oriiice, a supporting post extending longitudinally of and alined with said bore, a cleaning element comprising a rod of reduced cross-section and secured in and projecting from said post in registry with said orice, the other of said casing members having a relief passageway extending therethrough and leading from the interior of said casing, valve means operable to close said passageway, one of said elements being rigidly secured to and movable with said pressure responsive member, said casing having an inlet for supplying fluid under pressure to said orice, and a helical coil spring having one end in abutting engagement with one of said casing members and having its other end bearing against said responsive member and being held under compression therebetween to urge the movable one of said elements into cooperable cleaning relation to the other of said elements and to oppose movement of said responsive member by duid pressure, said spring being in concentric alinement with said supporting post so that lateral thrust of said spring on said responsive member and movable element will be minimized, said valve means being movable with said responsive member so that said valve means will be closed upon such relative movement of said elements as will open said oriilce, said valve means being moved by said responsive member under force of said spring to open said valve means prior to such relative movement of said elements as will close said orifice.

4. A device of the character described, comprising a casing including a pair of body members secured together, one of said members having a recess providing an internal chamber within said casing and having a passageway opening into and for inlet of duid to said chamber, a flexible resilient member positioned within said chamber and sealed along its peripheral-portion to said casingand forming a wa'll of a pressure chamber communicating with said passageway, said dexible member having a central aperture therethrough, the other of said body members having a hollow open-ended extension alined with said aperture, said extension having an internal an-r nular flangeproviding a guide means, a nozzle member secured and sealed in said aperture and extending through and guided in said guide means, a helical coil spring surrounding said nozzle member and held under compression between said ilange and said exiblemember to oppose movement of said flexible member by iluid pressure in said pressure chamber, said nozzle member having a dischargeoriiice, a supporting member carried by said one body member and projecting through said pressure chamber toward said oriiice, and a rod member of reduced crosssection projecting from said supporting member in alinement with and for receiving said orice, said flexible., member being movabie by uid pressure to move said orice out of surrounding4 relation to said rod.

5. A device of the character described, comprising a casing having an internal chamber, a pressure responsive movable member sealed along its marginal portion to said casing and forming a wall of said chamber, said member having an opening therethrough, a nozzle member secured to said movable member and having a discharge lport communicating with said opening, said nozzle member having a portion projecting from said responsive member, means rigid with said casing and'having guide means engaging said project- Ving portion and holding said nozzle member against lateral movement, a cleaning member secured to said casing and having a portion alined with and receiving said port, means normally acting to move said nozzle member to extend said cleaning portion through said port, said responsive member moving under force of uid pressure in said chamber in oppositiontosaid normally acting means to move said port away from said cleaning portion so that uid can discharge from said chamber, means for admission of iluid to said chamber, said casing having a relief passageway opening into said chamber and communicating with said uid admission means, a valve member in and controlling said passageway and having a portion projecting into said chamber for engagement with said responsive member, and means in lsaid passageway acting on and urging saidvvalve member toward closed position, said responsive member acting under iorce of said normally acting means to engage said valve projecting portion to move said valve member to open position, said responsive member being movable away from said projecting portion by iiuid pressure so that said last-named means can move said valve memberto closed position.

6. A device ofl the character described, comprising a casing including a pair of body members secured together, one of said members havlng a recess providing an internal chamber within said casing and having a passageway opening into and for inlet of iluid to said chamber, said one body member having a relief passageway' therethrough opening into said recess and having an internal shoulder, a valve seat member having a port therethrough and secured in the chamber end of said relief passageway, a valve member guided in said seat member and having a portion extending through said port, a helical coil spring positioned between said valve member and said shoulder and urging said valve member to its seat on said seat member, a ilexible resilient member positioned within said chamber and sealed along its peripheral portion to said casing and forming a wall of a pressure chamber communicating with said mst-named passageway, said ilexible member having a central aperture therethrough, the other of said body members having a hollow open-ended extension alined with said aperture, said extension having an internal annular flange providing a guide means, a nozzle member secured and sealed in said aperture and extending through and guided in said guide means, a helical coil spring surrounding said nozzle member and held under compression between said iiange and said ilexif ber carried by said one rbody member and pro-- jecting through said pressure chamber toward said orifice, and a rod member of reduced crosssection projecting from said supporting member in alinement with and for receiving said orice, said flexible member being movable by fluid pressure to' move said orifice out of surrounding relation to said rod and out of opposing relation to the projecting portion of said valve member so that said valve member spring can act to move said valve member to close said port.

7. A spray nozzle comprising a base member having a marginal surrounding projecting ilange, said member having a recess concentric with said flange, a cap member fitting within said ilange, a resilient ilexible diaphragm positioned and clamped between said members and cooperating with said recess to provide a pressure chamber, said base member having a bore therethrough concentric with said recess, said diaphragm having an aperture therethrough alined with said bore, an elongated supporting member secured in and closing the inner chamber end portion of said bore and extending through said aperture. a

nozzle member secured in and sealing said aperture, said nozzle member having a discharge ing a hollow extension surrounding said nozzle member, said extension having guide means engaging and holding said nozzle member against lateral movement, said base member having an inlet passageway leading from said bore and opening into said recess for admission of iiuid under pressure to said pressure chamber, said base mem-` ber having a relief passageway therethrough opening into said pressure chamber and having an internal shoulder, a tubular valve seat member in said relief passageway and having a valve port, a valve member guided in and extending through said seat member and having a portion operable to close said port, a helical coil spring positioned in said relief passageway and held under compression between said valve member and said shoulder to urge said valve member portion to closed position, said diaphragm engaging the recess end portion of said valve member, and a spring abutting said guide means and acting on said diaphragm to urge said valve member to open position, said diaphragm acting by uid pressure in said chamber to move said oriilce out of surrounding relation to said cleaning member and to permit said valve member to close said port, said second-named spring opposing movement of said diaphragm and acting to returnsaid nozzle member orice into surrounding relation to said cleaning member. i

EARN'EST J. DILLMAN.

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