US2323464A

US2323464A - Spray nozzle

Info

Publication number: US2323464A
Application number: US443859A
Authority: US
Inventors: Donald P Glessner
Original assignee: Akron Brass Co
Current assignee: Akron Brass Co
Priority date: 1942-05-21
Filing date: 1942-05-21
Publication date: 1943-07-06
Anticipated expiration: 1960-07-06

Description

July6, 1943. D. P. GLESSNER SPRAY NOZZLE Filed May 21 1942 INVENTOR. DONALD PGLESS/VE/E A TTOE/VEYS Patented July 6, 1943 srnar NOZZLE Donald P. Glessner, Wooster, Ohio,

Akron Brass Manufacturing Company,

assignor to 1nc.,

Wooster, Ohio, a corporation of Ohio Application May 21, 1942, Serial No. 443,859 6 Claims.. ((1299-1411!) This invention relates broadly to nozzles for fire fighting equipment and more specifically 'to nozzles of the so called fog or vapor type.

Th primary object of the invention is to sepa- .rate the column of water delivered through the hose into a plurality of streams and then violently disrupt such streams separated drops of water under atmospheric pressure so that the atomical spheroids thus formed may float in isolated relation to each other. To this end the nozzle embodies a series of ports which are arranged to effect the initial impingement of certain streams of water discharged therethrough, secondly, the impingement of the resultant spray with a stream discharged through a central opening in the nozzle and finally the impingement of the latter resultant mist with a spray of conical form discharged through a circular opening in the end of the nozzle.

A further object of the invention is to provide a nozzle which is economic of manufacture, sturdy of structure and free from such mechanisms as necessitate adjustment or require repair.

Other objects and advantages more or less ancillary to the foregoing and the manner in which all the various objects are realized will appear in the following description, which considered in connection with the accompanying drawing, sets forth the preferred embodiment of the invention.

Referring to the drawing wherein the preferred embodiment of the invention is illustrated;

Fig. l is a longitudinal sectional view of thenozzle embodying the present invention;

Fig. 2 is an end elevation of the nozzle illustrated in Fig. 1;

Fig. 3 is a detailed view. shown upon an enlarged scale of the baliie head illustrated in Fig- 1;

Fig. 4 is a front elevation of the baflle shown in Fig. 3 illustrating the arrangement of the discharge ports therein;

Fig. 5 is a vertical section through a form of the nozzle shown in Fig. 1; and

Fig. 6 is a front elevational view of the heme head employed therein, the drawing being shown on an enlarged scale.

Referring first to Fig. 1, the nozzle comprises a tubular body Ill threaded for engagement with a hose coupling of conventional form and provided as is customary with radially extended lugs H to accommodate the use of a wrench or similar tool. The outer end of the body I0 is threaded for the reception of a sleeve l2 formed with a beveled opening 13 in the face thereof which terminates in a counter bore l4 adjacent the inner end thereof. The sleeve I2 is further formed with modified and subdivide the spider IS, the

an annular rib II rearward the counter bore H, which engages a rib l8 formed in the periphery of a thimble l'l mounted in the body I. The inner end of the sleeve i2 is recessed for the reception of the packing ring l8 which is provided to arrest the flow of such water as may find its way through the threaded connections between the thimble and sleeve. 7

The thimble I1 is formed with a cross bar or central portion of which is drilled and tapped to support the threaded stem of a baiiie head 20. The body of the baffle, forward the stem, is constructed to form a passageway 2| communicating with the bore of the body l0 and terminating in a circular port 22 defined by the counter bore l4 and the peripheral edge of the baiile head.- The edge of the outer end of the baflie is formed with teeth 28 provided to disrupt the spray and subdivide the drops 'passing through the restricted passage or port 22. The stem of the ballle is drilled throughout its length to form a discharge port 24 which terminates in the center of a conical recess 25 formed in the face of the ballle. Within the recess 25 there is a series of ports 26 drilled to towards each other and towards the central port 24, the inclination of these ports being so arranged as to cause impingement of the respectivepairs of streams before such streams reach the column of water discharged through the port 24. Thus as the water is discharged under pressure the streams will be broken into a spray which in turn wil1 be thrown with disruptive force into the jet discharged through the port 24. Since the ports 26 are inclined towards the medial axis of the head and arranged concentric thereto the streams will be disrupted not only by impingement of the water from the convergent pairs of ports but also by impingement of the drops ofv water circumferential the streams as such drops reach their common focal point and the jet from the port 24. As the mist from the disrupted streams penetrates the axial jet the heavier drops of water therein will be thrown against the conical spray from the circularport 22 with sufficient velocity to efiect a further division of the particles of water in both the mist and the spray.

Although, as pointed out above, the mist from the convergent st cams impinges the conical spray with disrup ive force it should be noted that little if any loss occurs in the velocity of the spray since the direction and rate of flow of both streams of vapor are substantially the same.

From the foregoing it will be seen that atomconverge in pairs 7 ization of the water occurs beyond the confines .of the nozzle where atmospheric pressure acting upon shattered drops will formand hold the minute spheroidal particles in isolated relation with each other.

In the modified form illustrated in Figs. and 6, a-second series of ports is provided adjacent the periphery of the bailie, such ports being arranged to converg in pairs divergent the medial axis of the head so that the focal point thereof will impinge the conical spray discharged through the port II and thus efl'ect a further subdivision and isolation of the particles of water therein. a

When desired the sleeve I! may be adjusted relative to the baiiie head 2. to effect thedischarge of a spray or stream of narrow divergence and high velocity so that the column of water thus produced may be projected upon a far distant object.

It will be readily recognized that with the sleeve and/or baflle so addusted a column of water of tubular form will be discharged from the port 22 which can be positioned to envelop or surround the marginal edges of the objective while the core of mist or fog carried by the stream is focused directly upon the flame.

Although the foregoing description has been directed to a fire hose nozzle it will be understood that the improved ported baiiie may be used with equal faculty in spray heads for sprinkler systems or like devices in similar environs.

I claim:

1. A spray nozzle for a flre hose comprising a tubular body having the end portion thereof flared outwardly, a bailie head supported in said body, the end of said bailie being disposed within the flared portion of the body and in spaced relation thereto, said bailie .having a central port therein and a plurality of ports in circumambient relation thereto, the last named ports being inclined in pairs towards each other and inclined at a more obtuse angle towards said central port.

2. A nozzle for afire hose comprising a tubular body having a bell mouthed end, a baille head disposed within the bell mouthed end of the body and defining a circular port for the delivery of a conical stream, said baille having a plurality of ports therein inclined toward each other to effect the disruption of the jets delivered therethrough being further inclined to effect the impingement of the spray from the disrupted jets with the conieal stream from the circular port. 1

3. A spray nozzle comprising a tubular body, a bame head therein, the end portion thereof being disposed in spaced relation with the end of said body to deflne a circular port for the delivery of a conical stream, said bailie having a central port therein and a plurality of convergent openings, said openings being inclined towards each other in pairs and towards-the central port so that the Jets discharged therethrough impinge each other and the resultant spray partially impinges the jet from the central port and partially impinges the divergent conical stream.

4. A spray nozzle comprising a tubular body having a counter bore-in the free end thereof, a bame head supported therein having the end por- -tion thereof disposed in spaced relation with said counter bore, teeth in the portion of said baiiie adjacent the counter bore to eii'ect the delivery of a conical divergent spray stream, the walls of the bai'fle defining a central port and a plurality of concentric openings, certain of the concentric openings being inclined towards'each other to eflect partial impingement of the streamsdelivered therethrough and being also inclined to effect the impingement of the resultant spray with the stream delivered through the central port and delivery of the unimpinged portion of the jets from the concentric openings with the divergent conical spray stream.

5. A spray nozzle comprising a tubular body,- a baille head therein disposed in spaced relation therewith to deflne a circular port in the endof the body, said baille having a central port therein and a plurality of openings arranged in concentric relation thereto, said openings being inclined towards the central port with certain of said openings inclined at sharper angles towards each other, whereby the jets delivered through said openings will merge before impingement with the stream delivered through the central port.

6. A spray nozzle comprising a tubular body, a baiile head therein, a flared end portion on said baille disposed in spaced relation with the mouth of said body and defining a circular discharge port, said baille having an axial hole therein con-. stituting a central port, and having a plurality of circumambient openings inclined in pairs towards each other, certain of said openings being inclined towards the central port, other of said openings being inclined towards said circular discharge port.

7 DONALD P. GLESSNER.