US501182A - Fluid-mixer - Google Patents

Description

(No Model.)

J. J. H. UOKELEY.

FLUID MIXER.

Patented July 11, 1893;

INVENTOR: 2' ifiwj WITNESSES:

By his Aflomeys,

STATES ATENT JOHN J. H. OOKELEY, OF LONG ISLAND CITY, NEW YORK.

FLUID-MIXER.

SPECIFICATION forming part of Letters Patent No. 501,182, dated. July 11, 1893.

Application filed November 4, 1892. Serial No. 450,959- (No model.)

To all whom it may concern:

Be it known that I, JOHN J. H. OOKELEY, a citizen of the United States, residing in Long Island City, in the county of Queens and State of New York, haveinvented certain new and useful Improvements in Fluid-Mixers, of which the following is a specification.

This invention relates to apparatus for mixing fluids, particularly gases.

Heretofore gas mixers have been constructed with a jet orifice from which gas has been discharged under pressure through an open chamber and into a delivery pipe, the jet serving to create a suction within said chamber, whereby air is drawn therein and carried into the delivery tube, where it mixes with the gaseous jet.

My invention aims to provide an improved mixer of this general character which will be effective to insure a complete mixture of the gas and air.

To this end, in the preferred embodiment of my invention, I provide a circular mixing chamber into which the gaseous jet is discharged and is compelled to pass around before reaching the discharge pipe, and I provide an aperture near the center of this chamher through which the air or other fluid to be mixed with the gaseous jet will be drawn, and I provide an agitator within this chamber operated by the force of the jet for facilitating the mixture, and I provide certain other improvements which will be hereinafter fully set forth. By this construction the centrifugal action of the jet in traversing the circular interior of the mixing chamber serves to draw in air, and to thoroughly mix the gas and air during the circuit around the chamber until the discharge tube is reached.

In the accompanying drawings, which illustrate the preferred form of my invention, Figure 1 is a side elevation of my improved mixer. Fig. 2 is a plan view thereof. Fig. 3 is a vertical mid-section thereof; and Fig. 4. is a cross-section thereof on the lines 44. in Fig. 3.

Referring to the drawings, I will now describe the preferred form of my invention.

Let B indicate the ingress passage, A the mixing chamber, and O the egress passage of the device. According to my invention the chamber A is a circular chamber into which the gas or other fluid is discharged tangentially from one side toward its curved inner surface in such manner that the jet of gas upon striking the inner periphery of the chamber will follow the latter around until it reaches the egress passage, through which it will be withdrawn. The ingress passage B consists of a jet-nozzle a formed in a projection 12 in the side of the chamber A, which projection is exteriorly screw-threaded and receives agaspipe 0 leading from any suitable source of supply. The jet a tapers to acontracted orifice a at the inner periphery of the chamber A,

and directed tangentially to discharge the jet of gas across the chamber in such direction that as it strikes the adjacent inner wall thereof, its movement will cause it to follow around the course of this wall until the discharge passage 0 is reached. The discharge passage is of greater area than the ingress passage, and is constructed to communicate with the interior of the chamber A at the extreme outer portion thereof adjacent to but somewhat in advance of the point at which the j et, ais disposed, whereby the discharge from the latter must traverse somewhat more than the entire circuit of the chamber before it can pass into the egress passage. The discharge passage consists of a projection d having a conduit or passage e extending inwardly in direction inclined relatively to the direction of discharge of the jet orifice a the projection (1 being screwthreaded or otherwise suitably adapted to couple with a delivery tube f or other suitable provision for receiving the discharge from the mixer.

.The chamber A is provided with one or more inlet apertures D, through which air or other fluid may be introduced to mix with the fluid discharged at the jet A, this orifice being-preferably near the center of the chamber, and preferably extending longitudinally in the form of an arc of a circle struck from the center of the chamber. The aperture D is disposed at the side of the center of the chamber farthest from the inlet orifice a. An inwardly projecting wing E is disposed about a portion of the aperture D at the'side thereof toward which the gas approaches in traversing the chamber, which wing serves to prevent the escape of gas through the aperture. This wing is inclined toward the aperture and protects the entire inner side thereof,one end thereof, and aportion of the other side thereof.

A regulator F is provided for controlling the inlet through the aperture D. Preferablythis consists of a plate movable over the aperture to increase or diminish its area.

An agitator G is provided within the mixing chamber fer facilitating the mixing of air entering by the aperture D with the gas discharged through the orifice a, and this agitator is preferably operated by the force of the jet discharged into the chamber. The agitator;consists ofa rotatingfan mounted centrally of the chamber on a spindle g, and havin g a plurality of blades h h, six being shown. The blades h move into the path of the jet from the orifice a, and are preferably disposed with their faces at right angles to the direction of the jet, and constructed with a contour corresponding approximately with the outer part of the interior of the chamber, but not entirely filling this space, whereby as the agitator rotates under the impulse of the injected jet, it serves to agitate the latter, as well as the air entering the chamber through the aperture D, and thereby facilitates the mixing operation.

In operation, the fluid jetted into the chamber A will circle the outer periphery of the interior thereof at great speed, first striking the wall directly opposite the jet orifice, and then following the curved contour of the wall until it reaches the discharge passage 0, when it will escape through the conduit 6. In traversing the chamber at a high speed, its centrifugal force will be sufficient to keep it adjacent to the outer periphery thereof. The rapidly circulating current of gas within the chamber will by centrifugal action induce a strong inward suction of air through the aperture D, which air as it enters will immediately seek the outer wall of the chamber, thereby becoming thoroughly mixed with the fluid comprising the jet, the mixture thus obtained passing out through the passage 6, in which the mixing if imperfect may be completed. When the agitator G is used, the intermingling of the gas and air will be facilitated because of the subdividing of the fluid currents within the-chamber by reason of their contact with the wings of the agitator. The agitator will not revolve at quite the speed of the entering jet by reason of its friction, and the action of its various blades against the contents of the chamber. The centrifugal inductive action is in addition to the usual suction of the jet.

The parts thus far described may be constructed in any suitable manner without departing from my invention. I prefer, however, to construct them as shown in the drawings, where the chamber A is constructed of two cup-like parts of cast metal 1' e", each constituting substantially half thereof, and thescrewed together, and as the operation is completed the projections 12 and (1 will be brought in coincidence with their opposite faces Z In intimate contact, these faces being dressed off smooth to make a tight joint. The proj ections are then screwthreaded externally for receiving respectively the pipes c and f, and are bored out respectively to form the jet to and orifice a, and the discharge passage e. Each shell is provided with an indentation m or other suitable provision for receiving the shaft 9 of the agitator G. The regulator F consists of a flat plate seating against the flat outer surface of the cup-shaped piece 2', and pivotally mounted in position by a screw or other suitable provision at disposed on the same axis as the shaft g.

It will be seen that my invention provides an improved mixer in which a very thorough mixing of fluids can be easily accomplished, and which will be cheap of construction, durable, and compact.

It will be understood that the invention is not limited to the exact details of construction set forth, as these may be modified as circumstances or the j udgment of those skilled in the art may dictate without departing from the essential features of the invention.

What I claim is, in fluid-mixers, the following-defined novel features and combinations, substantially ashereinbefore set forth, namely:

1. In a fluid mixer, an ingress passage B and an egress passage 0, in combination with a mixing chamber A of substantially circular interior constructed relatively to said ingress passage to cause the injected fluid therefrom to traverse the circuit of its interior before reaching the discharge passage, said chamber constructed with an air inlet apertureD and a wing E constituting a guard, substantially as and for the purpose set forth.

2. In a fluid mixer, the ingress and egress passages B and G, in combination with the intervening mixing chamber A constructed with a circular interior and having aperture D and wing E, the regulator F for said aperture, and the agitator Gwithin said chamber and free to rotate with the fluid therein, and having blades it beyond said wing, all substantially as and for the purpose set forth.

3. I11 a fluid mixer, the ingress and egress passages,- in combination with a mixing chamber A constructed of opposite cup shaped pieces it" having interen gaging screw-threads ICS j, is, and projections b cl constructed respect- In witness whereof I have hereunto signed ively with faces Z disposed to intimately conmy name in the presence of two subscribing tact when said piecesiz" are screwed together, witnesses. said projections b and d constructed with in- JOHN J. H. OOKELEY. 5 ternal passages, the one for ingress to and the Witnesses:

other for egress from said chamber, substan- GEORGE H. FRAsER, tially as and for the purpose set forth.

CHARLES K. FRASER.

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