US1725381A

US1725381A - Liquid atomizer

Info

Publication number: US1725381A
Application number: US102914A
Authority: US
Inventors: Thomas Henry
Original assignee: Bethlehem Steel Corp
Current assignee: Bethlehem Steel Corp
Priority date: 1926-04-19
Filing date: 1926-04-19
Publication date: 1929-08-20
Anticipated expiration: 1946-08-20

Description

Aug. 20, 1929. H. THOMAS 1,725,381

` LIQUID AToMizER Filed April 19. 1926 fr y! INVENTOR 17e/v? Themas,

Patented Aug. 20, 1929.

UNITED STATES 1,725,381. OFFICE.

PATENT HENRY THOMAS, F ELIZABETH, NEW JERSEY, ASSIGNOR TO BETHLEHEM STEEL COMPANY.

LIQUID ATOMIZER.

Application led April 19, 1926. Serial N0. 102,914.

My invention relates to an atomizer or spraying' device for the atomization of a liquid such as oil, water, or any other desired liquid, wherein the atomization is caused by the pressure of the liquid itself. It is customary with such devices to vary the amount of liquid sprayed by adjusting the initial'pressure thereof and also to provide` a throttling means contained within the device itself for varying its capacity.

One of the objects of my invention is to provide a novel construction of a liquid atomizer. wherein a novel means is employed within the atomizer to control the capacity thereof.

The novel features will be more fully understood from the following description and claim taken with the drawings in which:

Fig. 1 is a longitudinal section of an atomizer embodying my invention; Y

Fig. 2 is a partial view of Fig. 1 somewhat enlarged;

Fig. 3 is a plan view of the atomizing disk;

`Fig. 4 is a cross sectional view of the disk shown in Fig. 3;

Fig. 5 is a side elevational view of the shut-off plug;

Fig. 6 is an end view of the plug shown in Fig. 5;

Fig. 7 is an enlarged sectional view illustrating'a modified form of my invention.

Referring to the drawings; 10 designates the body portion of my device which is provided with recess 11, a portion of which is threaded to receive the externally threaded end of the supply conduit l1.2. The latter communicates with the source of liquid supply which it is desired to atomize, it being understood that. the liquid is forced through said conduit under any desired or predetermined pressure. The body 10 is bored centrally and is threaded, as at 13, to receive the shut-off plug hereinafter referred to. It will be noted that the diameter of the central bore 13 is less than the diameter of the recess 11 and thus provides a thickened wall portion 14.

An annular recess 15 is formed in the forward face of the wall portion 14 and communicates with the recess 11 by means of the passageways 16. Seated on the forward face of the body 10 is an atomizing disk 17, which is provided with a rearwardly extending projection 18 adapted to fit in the central bore 13. The atomizing disk is bored nular recess 21. The latter recess is disposed in registry with the recess 15 and communicates with the recess 20 by means of the passageway 22 formed in the disk 17. The for- Y ward face of the latter is dished as at 23 to provide a seat for the tip 24. Tangential ports or ducts are provided in the forward face of the disk 17 to afford communication between the recess 20 and the central bore 19. The tip 24 is beveled at one of its corners, as at 25, to adapt itself to the seat 23 and is provided with a central orifice 26 which is flared rearwardly and outwardly, as at 27, and converges towards the wall defining the hole 19, so that the flow of atomized liquid is unrestricted.

A nut 28 is provided to engage the threaded'portion 29 of the body 10 and serves to secure the tip 24 and the disk 17 in position. The shut-off plug 30 comprises a threaded portion 31 adapted to engage the threaded portion 13 of the body 10 and a plain cylindrical portion 32 adapted to slidingly fit the bore 19 of the atomizing disk 17.

The shut-ofi' plug 30 serves to control the liquid delivered from the tangential ports 25 to' the nebulizing chamber 33, which is defined by the wall of the hole 19, the end plug 30 a-nd flaring portion of the orifice 20. By rotating the shut-off plug 30 a longitudinal movement is imparted thereto so that it may extend a greater or lesser distance into the bore 19, and in this manner the nebulizing chamber 33 may be adjusted in size to suit the varying conditions, such as different kinds of liquids to be atomized and different pressures thereof, without changing the general outlines or shape of the chamber.

The cylindrical portion 32 of the shut-off plug 30 may be advanced to vary the size of the exit of the ports 25 to restrict the flow of the liquid or to completely shut ofi' the exits and prevent the flow of liquid. In order to manipulate the atomizer beyond the supply conduit, I provide a spindle 34 which is mounted in the closure 35 in a suitable bearing to allow free rotation of the spindle and prevent axial movement thereof. The spindle 34 extends within the supply conduit 12 aud is provided with a flattened end portion adapted to engage with a kerf 36 formed in the shut-off plug 30. To manipulate the ser - vided.

Referring to Fig. 7, I show a modified type of shut-0E plug 30 and a modified form of tip 24. The plug 30 is provided with a conveXl shaped end surface 37 and the rear face of the tip 24 is provided with a complementary concave seat 38. In this form the plug 80 may be advanced against the seat 38 to positively shut off the atomizer. In operation, assuming the shut-off plug tol be in the position shown in Fig. l, liquid under pressure is supplied to the conduit 12 and passes through the passageway 16, passageways 22 tothe annular recess 20 and then through the tangential ports 25 which gives it a whirling motion into the nebulizing chamber 33 by which it is atomized as it passes out of the orifice 26. By manipulating the hand wheel 37 the plug 30 may be advanced or retracted to `vary the size of the chamber 33. It may also be manipulated to vary the size of the outlets of the ports 25 or completely close said ,ports and rprevent the flow of the liquid.

lFrom the foregoing it will be seen that I have devised a simple and novel liquid atomizer which may be easily manipulated to vary the degree of atomization desired.

IVhile I have shown my invention in but two forms, it will be obvious to those skilled in the art that it is not. so limited, but is susceptible of various other changes and modifications without departing from the spirit Y thereof, andI desire, therefore, that only claim as new and desire to secure by Letters Patent is:

In a liquid atomizer, the combination of a supply conduit, Va body member connected to said conduit, a chamber in the body member in open communication with the conduit, an annular channel at the forward end of the body member, a central recess extending from said chamber to the forward end of the body member, passageways communicating said annular channel with said chamber, a disk member fitting against the outer end of the body member and having an annular channel, an axial nebulizing chamber in the disk member, tangential grooves at the forward side of said disk having their inner ends opening into said nebulizing chamber andtheir outer ends intersecting the annular channel formed in said disk, passageways communicating said last mentioned annular channel with the annular channel formed in said body, a tip member engaging said disk member, an orifice formed in said tip member and in registry with said nebulizing chamber, a nut member engaging said body member and said tip member, an adjustable plug member mounted to Vbe moved axially in said nebulizing chamber, and shaped to vary by its'adjustment the effective size of said chamber and of the openings of said tangential grooves into said nebulizing chamber, and manipulative means extending eX- teriorly of the atomizer for adjusting said plug member.

In testimonyy whereof I hereunto affix my signature this 6th day "of April, 1926.

HENRY THOMAS.