US1472486A - Nebulizer of liquids - Google Patents

Description

A. w. MORSE NEBULIZER OF LIQUIDS Filed Feb. 10 1921 fl/berf W Morse INVENTOR. BY m;

A TTORNEY.

Patented Oct. 30, 1923.

hairs, stares NEBULIZER or L'IQUIns- Application filed February 10, 1921. Serial No. 443,941.

To aZZ whom it may concern: Be it known that I, ALBERT W. MORSE, a citizen of the United States, and a resident of Long Island City, in the county of Queens and State of New York, have invented certain new and useful Improvements in Nebulizers of Liquids, of which the following is a specification, 7

This invention relates to nebulizers of liquids, that is apparatus for causing liquids to assume the form of an extremely fine mist; and the invention particularly relates to nebulizers of the free centrifugal type hereinafter disclosed, wherein the centrifu- 0 gal action is obtained, not by movingparts or by stationary batfles in the discharge passage, but by the tangential direction of inlet orifices into a so-called centrifugal chamber within the discharge nozzle, substantially as described in Patent #876,108, issued J anuary 7th, 1908, to Stringham and Elmendorf.

Nebulizers of this kind are-used in connection with various devices, such as fuel oil burners, paint spraying apparatus, etc., and

it is the particular object of this invention to provide the nebulizer nozzle with means to give the spray issuing therefrom a substantially fan-like or flat shape, instead of conical as heretofore. This is of special advantage when using .the device embodied with this nebulizer as a paint spraying medium, so as to give the effect of a brush; or, if used in connection with a fuel burner,

p when the same'is mounted near thefurnace arch, a fiat or fan-like spray is of utmost advantage, to avoid the melting of the arch.

Other objects of the invention will appear in the following specifications in which the nebulizer is shown in connection with a fuel oil burner.

The invention is illustrated by means of the accompanying drawings in which Fig. 1 is a vertical longitudinal sectional view of the burner;

Fig. 2 is an enlarged vertical longitudinal sectional view of the nebulizer proper;

Fig. 3 is an elevation and Fig. 4 a plan view of the nebulizer; and

Fig. 5 a cross sectional view along the plane of line 55 in Fig. 2.

Like characters of reference denote similar parts throughout the several views and the following description.

10 is a hollow casing of substantially L shape, the shorter branch 11 of which 1s a hollow core 24 cylindrical tapped at '12for an air supply 13, communicatingwith theinterior of casing 10. The longenbranch 1'4 of'casing 10 is threaded exteriorly at 15, to receive an air adjusting cap 16,. provided with an outlet opening 17, and held 1n adjustable'position on branch 14 by means of a lock nut 18. Extendingcentrally through the casing 10, concentric with 1ts' longer branch 14, is a tube. 19 preferably integral with the casing 10. This tube 19 is threaded interiorly at 20, adjacent the' air tube 13, to receive a fuelsupply. pipe 21. 'Y

The other end of tube 19v projects slightly beyond branch 14 of casing 10 and is threaded interiorly at 22 to receive a neubulizer 23..

Nebulize'r 23 is provided in' its center with l x in shape, called the centrifugal chamber. 25 is a plug screwed into the lower part of the nebulizer for the purpose of machining the centrifugal chamber. The top ofthe centrifugal chamber 24 is conically shaped at 26 and provided at its apex with a nebulizing outlet 27. Nebulizer 23 is screwed into tube 19 by means of a threaded portion 28 and a tight joint is effected thereon with a flange 29. 30 and 31 are small drills in the nebulizer, and 32 and 33 are ducts or inlet orifices, joiningthe innermost portion of drills 30 and 31 with the upper part of the centrifugal chamber 24. Ducts 32 and 33 are positioned so as to impinge the circumference of the centrifugal chamber 24 tangentially,

as shown in Fig. 5. They are further slightly inclined towards the outer end. 34 and 35 are parallel projecting flat surfaces at the discharge side of the nebulizer forming a slot 36 the axis of which passes through the center of the nebulizing outlet 27.

The operation of this device is as follows:

Oil is admitted into the burner under pressure, through supply pipe 21, thence through tube 19 into the nebulizer 23. Then through drills 30 and 31 and inlet orifices 32 and 33 into centrifugal chamber24. Owing to the direction of the inlet orifices, tangentially with respect to the wall of chamber 24, the oil is being given a swirling motion, and is finally expelled in a rotary swirl from out let 2?, where, due to the projecting flat surfaces 34 and 35, it assumes the shape of a fan, the apex of which is the outlet 27.

Air is admitted, under pressure, into the interior of casing 10 by means of pipe 13,

whence it is deflected by cap 16 towards the spray of oil issuing from nebulizing outlet 27, where a vapor of high combustive qualities is the result. g

It is understood that various changes in the form, proportion and minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages ofthe invention as defined in the appended claims. Furthermore, while the nebulizing nozzle is shown in combination with an oil burner it is understood that this invention may be used in connection with any device utilizing the action of nebulizing liquids.

lVhat I claim as new, is

1. A nebulizer of liquids comprising a structure having in combination a small centrifugal chamber closed at one end and having a small outlet at its other end, orifices admitting a liquid to whirl in the said centrifugal chamber toward said small outlet, and a slotin the discharge side of the said nebulizer, the said small outlet terminating in the said slot, and .a frusto-spherical projection at the discharge side of the nebulizer, the said slot extending across the said projection.

2. A nebulizer of liquids consisting of a structure having in combination a small centrifugal chamber having a substantially fiat closure at one end and a substantially conical shape at the other end, a nebulizing outlet at the point of the conical end, orifices admitting a liquid to whirl in the small centrifugal chamber toward the nebulizing outlet, and parallel flat surfaces adjacent the discharge side of the said nebulizing outlet, the said fiat surfaces forming substantially segments of a circle, the chords of which are immediately adjacent the said nebulizing outlet.

3. A nebulizer of liquids comprising a structure having in combination a small centrifugal passage closed at one end and having a nebulizing outlet at its other end, orifices admitting a liquid into the small centrifugal passage substantially tangent to the wall thereof and at an angle to the axis thereof, and means at the discharge side of the nebulizer consisting of a frusto-spherical projection and a slot diagonally across and in central alignment with the said nebulizing outlet, to give the liquid spray passing through the nebulizing outlet, a substantially fan-like shape.

' In testimony whereof I have hereunto set my hand and seal in presence of two subscribing witnesses.

ALBERTW. MORSE. [1 5.1

Witnesses M. CHURCHILL,

W. W. CowAN.

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