US1589247A - Reed-type spray nozzle - Google Patents

Description

June 15 1926.

' Y 1,589,247 i P. L. SCOTT Y REED TYPE 'SPRAY NOZZLE v Filed Jan.v '7, 1926 afyzek 1223777@ A-900%.

l faz/67H50? v Patented June 15, 1926.

UNITED vs 'rivrus 1,589,247 Parri-:NTl OFFICE.

PHILIP LANE SCOTT, OF CHICAGO, ILLINOIS, ASSIGNOR T0 SPERDIESELTRACTOR CORPORATION, OF LA PORTE, INDIANA, A CORPORATION OF NEW YORK.

REED-TYPE SPRAY Nozzrin.

Application led January 7, 1926. Serial No. 79,910.

My invention relates to spray nozzles and, particularly to those adapted for direct injection of fuel into internal combustion motors where the fuel is injected directly under pressure and without any compressed air or other agents accompanying it, al-

though obviously my spray nozzle may be used wherever it is desirable to spray or atomize or comminute a liquid. y j

- It will be understood that this spray may be used in an engine or elsewhere; that it 1 may be directly injected linto the chamber or place where it iis going to be used or it may be Xed as it is injected or produced or subsequently," with gas or other material, it might, for instance, be injected into an A ordinary typ`e. of carburetor in which, in

suchcase, the fuel insteadl of being l"sucked into theA air passage would be injected into it, and of course, any desired modification of this might be provided.

The nature of my nozzle is suchthat it is normally held closed and is opened only openmg l1s effected by the mass deformation of one or more of the parts of which the valve is composed. In lthe particular example herewith set forth, I employ a steel valve disc which is deformed by the pressure of the fuel agains it and,

thus allows the fuel to 'be forced into the. combustion chamber o'f the motor.

My invention is illustrated in the accompanying drawings where: v

Figure 1 is a vertical section showing my `valve in place;

Figure 2 is a section on the line 2-2 of Figure 1;

` igure 3 vis a detail section, on an enlarged scale, through a modified form of mdevice; a v igure 4 is a lplan view of the valve disc ofFigure 3 Wit parts cut away;

Fi re 5'is a similar plan view of a modified orm.

Figure 6 is a section along' the line 6 6 of Figure 5.

Figure 7 is a plan view of one of the two mating spray discs.

Figure 8 is a plan view of a modified reinforcing washer arrangement.'

` Like parts are indicated by like characters in allA the figures.

A is a hollow spray head to which liquid under pressure may be fed 'through a pipe by t e direct ressure of the liquid behind 1t k'Ike P spray head, being seated upon the packing washer B1 by a screw threaded cap B2. BB is an apertured reinforcing washer adapted to support the spray disc or segments. Thev walls of the aperture of said washer appreaching more closely to the line of cleavage between the discs at the center than elsewhere. This, particular arrangement of the reinforcing washer will be used of course only when the spray or liquid is to pass out through a relatively elongated crack, because under such conditions it is .necessary to have the. space between the meeting edges of the discs approximately constant or at least not too widely divergent between a maximum and minimum opening.

The modified form shown in Figures l3 and 4;, however, Adispenses with the reinforcing washer B3 for the purpose of suggesting that under some conditions this washer center and thus a relatively short spray is produced. It will be understood that this packing disc C is without any spring action i but it merely serves to limit the point. at

which fiow may take'place and that it may be used with or without the apertured reinforcing Iwasher. l

In Figures 5 and 6, the spring segments yare weakened by thecounter-sunk hole D in Figure 7 This weakened disc is shown w-ithout the overlying packing disc, the idea being that when pressure \is put upon the liquid the spray will pass through only at the point where the weakening has taken place,.since the resistance to flow is 'greatly diminished at that point. l

Inthe modifiedy form of Figure 8 the reinforcing disc or washer has acentral circular aperture. In this case the washer might serve both as a reinforcing and as a 'packing or limiting washer' to limit the 1 pressure is raised above a certain predeter- -.10 .forced apart to permit liquid to rush out f under mined point, the 'two spring plateswill be ressure from between them. If these discs are shown in Figures l and 2' without any support, there might be an irregular spray action resultant upon too great a strain on .the\thin -spring discs and the reinforcing washer which supports them in various ways as indicated prevents this, equalizes the strain and perhaps in lsome eases limits the point at which the ,spray action can take place. v Y

`Under some" conditions it is best to have the spray' pass out only through a very short passage, and to make this possible, I provide the thin plate which rests upon the spring discs and. is perforated to expose\4 .only a short portion of the crack between the edges of the discs.

These discs are very sensitive and experi'ence-shows` that by merely weakening or thinning out' the discs on one side near the -'"''crack, the spray can in this way be localized.

Experience shows under some conditions `it is desirable to have the edges of the discs vactually in Contact. Under other conditions it might be desirable to have the discs so positioned that their edges are just outof contact and even when this is the case experience showsthat perhaps on account of surface tension or capillarity or perhaps for some other reason which we do not need to go into at this time, that drooling or leakage of the liquid will not take place.

' I claim 1. In an injection valve, a com osite valve disc composed 'of a plurality or seg- 'ments normally tangent.

2. In an injection valve, a com osite valve disc composed of a plurality .ci segments normally tangent,y and additional means for supporting said disc.

3. In an injection valve, a composite valve disc composed of a plurality et segments normally tangent, and additional means for supporting said disc, comprising an apertured supporting disc." f"

4. In an injection valve, a com site valve disc composed of a plurality o .'nor# mally tangent segments, and an apertured supporting disc .therefor and in contactl therewith. v f

5. In an injection valve, the combination of a composite -valve disc composed of` a plurality of segments normally tangent,

with a supportingcap therefor, having an ing housing, having a liquid containing chamber therein, a closure for said chamber comprising a plurality of spring plates arranged in a single plane and means for holding them edge to edge.

7. In a spray nozzle two springplates.

and means for holding them in position in the same plane with their opposed edges in contact vthroughout their length.

8. A Ispray head comprisin a supporting housing having a liquid containing chamber therein, a closure for 'said chamber comprising a plurality of spring plates arranged ina single'plane and means for holding them edge to edge, means adjacent but slightly removed,v from .their opposed edges for supporting said plates.

9. In a spray nozzle, two spring plates and means for holding them in position in the same plane with their opposed edges in contact throughout their length, means adjacent but slightly removed from their op-` posed edges for supporting said plates.

10.In a spray' nozzle, two spring plates arranged with opposed edges in contact and located in the same plane, means for holding the platesrigidly in position.

l1. In a s ray nozzle, two spring plates f arranged wit opposed edges in contact and located in the same plane, means for holdadapted to contain liquid under pressure, a

nozzledisk closing said housing made up of a pluralityl of separate spring velements engaging along their edges and means'for holding them in position.

13. A spray head comprising a'housing adapted nozzle disk closing said housing made up of a plurality of separate spring elements engaging along their edges, means for holding them in position, and means for positively preventing the discharge of liquid from between said spring elements except throughout a short portion of the crack between them. y

14. A spray 4he'ad comprising a housing adapted to contain liquid under pressure, a

nozzle disk closing said housing Vmade upof a plurality of separate spring elements engaging along theiredges, means'for hold-' in g them in position, and means for positivelyj preventing the discharge of liquid from between said spring elements except throughout ashort portion of the crack between them, said means comprising an apertured disk resting upon said spring elements.

l5. A spray nozzle comprising twoplates to containfliquid under pressure, a-

ioo

having opposed edges n contact and located in the same plane,'means for holding said plates rigidly in position and a third plate resting against them in a parallel lane apertured at a point in line with the joint between the first two plates.

16. In a spray nozzle, two plates arranged l edge to edge and located in the same plane',

means for olding said plates rigidly in po- I vl0 sition so that their abutting edges are in lclose and intimate contact and a plate in engagement'with said'two plates, apertured in line with the joint between the first two plates and means for holding all three plates rigidly together at theircommon peripherles.

Signed atChieao, county of Cook and` State `of Illinois, t

is 4th day of January,

PHILIP LANE SCOTT.

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