US1672617A - Boiler - Google Patents

Description

June s, 1928. I 1,672,617

G. LASKER BOILER Filed Aug. 12, 1922 2 Sheets-Sheet l G. LASKER BOILER J\ime5,1928. 1,672,617

Filed Aug.l2, 1922 2 Sheets-Sheet 2 Patented June 5, 1928.-

' "mammalian; or CHICAGO, rtztmorsi i w. I

norms.

Application filed August a, is: sens-1 no. 501,520:

My invention relates to boilers, and more particularly to meansv for forcing the fluid passing therethrough into more intimate contact with the, heating, surfaces and increasing the heating effect.

The invention has among its other objects the production of a device of the kind de-' scribed which is simple, convenient, compact, durable, reliable, efficient and satisfactory for use wherever found applicable.

Another object of my invention is to .provide means in the tubular passages of a boiler for spirally directing the passage of the fluid therethrough, or, in other words, imparting a swirling movement thereto, which means are also adapted to be moved longitudinally within the passages so as to frictionally engage the bounding Walls of the passages and'remove any scale and soot or other foreign matter adhering thereto.

Many other objects and advantages of the construction herein shown and described will be obvious to those skilled in the art fro the disclosures herein. given.

To this end my invention consists in the novel construction, arrangement and combination of parts herein shown and described, and more particularly pointed out in the claim.

In the drawings, whereln like reference characters indicate like or corresponding parts,

Figure l is a side elevation of-a boiler showing one of the fluid-directing vanes in place; Y

Figure 2 is an enlarged fragmentary elevation of the same;

Figure 3 is a'section substantially on th line 3-3 of Figure 2;

Figure 4 is a fra-gmentaryxsection through a Water tube boiler showing the fluid-directing means as arranged within the water tubes;

Figure 5 is an enlarged detail of the fluiddirecting means in place'in one of the tubes.

In the drawings, wherein I have illustrated a preferred embodiment of my invention, 1 indicates a boiler of any preferred design, shape and material having a plurality of flues 2 arranged longitudinally thereof and through which the heating medium mustpass in order to contact with the water contained in the drum. Removably positioned in one or more of the fines, and preferably in each of them, are cores or vanes 3 for directing the heating medium in a predetermined path,v said fluid-directs. ing means in this particularinstance coni- Y prises a longitudinally-extending bar of S- shaped cross-sectiomas shown most clearly v in Figure 3, and of a width substantially equal to the inner diameter of. the flue, so as I tofrictionally contact with the inner wall thereof when inserted therein.

The member 3 is twisted spirally along its length, as shown, so that the sides thereof engage the inner wall of the flue along spiral lines. Thus-it will be apparent that any of the heating fluid passing through said passages or fiues will be directed inspiral paths longitudinally of the flues, and thus will not only increase the velocity ofthe fluid, but will force it into more intimate heating contact'with the surrounding portions of the water .drum, thus increasing the efliciency thereof. Asbefore noted, the member 3 may be movable longitudinally .of the tube, so that any soot or other foreign matter adhering to the inner surface of the flue will beremoved therefrom whenever said member 3 is reciprocated Within the flue.

An opening 4 maybe provided at one or both ends of the member 3, so as to assist in drawing said member into the flue by means of a cable or the like, or in engaging it by any suitable cooperating means for reciprocating it duringits cleaning action.

' In the modification shown in Figures 4 and 5, the member 3 is positioned centrally within and extending longitudinally of the steam tubes 5 of a Water tube boiler 1', so

as to impart a spiral or whirling movement of the steam passing through said tubes,

thus forcing itcinto a more intimate contact withthe heated tubes, preventing the burning of said tubes and increasingthe heating effect.

the inner surface of the water tubes.

Having thus described my invention, it is obvious that various "immaterial modifications'may be made in the same without departing from the spirit of my invention;

hence I do not wish to be understood as limiting myself to the exact form, construction, arrangement, and combination of parts herein shown and described or uses mentioned.

What I claim as new and desire to secure by Letters Patent is:

In combination, a boiler having a plurality of tubes therethrough for the passage of fluid, and core members arranged within the 10 tubes and engaging theinner faces of the v walls of the tubes, said core members each tral part to its side edges, and said strip be-' ing twisted lengthwise thereof to extend in spiral formation.

In testimony whereof I have hereunto signed my name. V

GEORGE LAISKER.

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