US1406729A - Vertical boiler - Google Patents

Description

. HALLANDER.

VERTICAL BOILER.

APPLICATION mep unc.5.191s.

Patented Feb. 14, 1922.

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S. HALLANDER.

VERTICAL BOILER.

APPLICATION FILED DEC.5. 1919.

1,406,729. Patented, Feb. 14, 1922.

2 SHEETS-SHEET 2.

UNITED STATES yPATENT GFFICE.

VERTCAL BLER.

Specification of Letters Patent. Pgwnted Feb, 14, 1922,

Application led December 5, 1919. Serial No. 342,679.

T0 all whom t may con-cera:

Be it known that I, SAMUEL llALLANDnR, a citizen of the lominion of Canada, residing at Vancouver, in the Province of British Columbia, Canada, have invented certain new and useful Improvements in Vertical Boilers, of which the fol-lowing is a specification. y

This invention relates to a steam generating boiler of the vertical class and having steam generating tubes supplementing the heating surface of the fire box.

rihe invention is particularly described in the following specification7 reference being made to the drawings by which it is accompanied, in which:

Fig. 1 is a front elevation and half section of the boiler.

Fig. 2, a sectional plan on the line 2 2 in. Fig. 1, and v l Fig. 3, a sectional plan on the line 3 3 in Fig. 1.

The boiler comprises an outer cylindrical shell 2 and an inner concentric `lireoox shell 3, which latter is preferably corrugated to afford a more effective heating surface and oppose a better resistance to collapse under pressure.

At the bottom the inner and outer shells are connected together on a base ring 4 which is preferably madeof two rings of plate, one of which may be produced as at 5, to form the ash-pit which has the customary door aperture. y

These rings t are carried upward to reinforce the door aperture 6 of the boiler firebox at the approximatey level -of the underside of which is the grate 7.

At a suitable height above the grate 7 the inner nre-box shell 3 has an upwardly projecting circular bulge 8, the reason of which will be explained later.

The upper end of the fire-box shell 3V is inwardly flanged to support an annularV steam chamber-9 which is formed by a down wardly convex ring 10 and a similar oppositely convex ring 11, the outer edges of beth of which rings are secured to the outer shell 2 of the boiler and the inner edge of both to a cylinder 12 which forms alsok the uptakek from the fire-box. l

Between the'bulge 8 of the "hre-box and the inner part of the' lower end 10 of the steam chamber 9, coil tubes'l extend, the same being arranged in concentric circles, see Fig. 3. These tubes 1.5 are coiled althe outer shell 2 has a series of apertures 1.6 to provide for the downward circulation of the water induced by theupward circulation through t-he tubes 15.

To afford access to the tube ends in the lirebox shell hand holes 17 are provided in the outer shell 2 around the Vbulge 8, and access to the upper ends of the same is afforded by a man-hole 18 in the upper ring 1l of the steam space 9. Provision is also made on this ring for the safety valve at 19 and the customary steam space mountings; while the feed and blow-olf connections are made adjacent the base ring 4;.

A circular baille 23T5eif lire-clay or other refractory material is suspended below the lower end of the uptake to prevent direct access of the llame through the central part and to cause the heated gases to travel among the tubes 15. A shield plate 2O is supported within the uptake to protect the plate where it is in the steam space.

To enable the condition of the lire to be examined, particularly when oil `fuel is being used, tubular viewing apertures `23 may be inserted at intervals through the outer and lire-box shells around the upper part of the lire-box, which apertures will be closable in any convenient manner with plugs or the like.

With this construction I am enabled to obtain higher working pressure with a lighter construction of boiler and one' occupying less space than the standard Scotch marine boiler for which it may be considered a substitute. Being of small diameter it can be installed or removed without disturb.- ing the ships fittings and, if standardized,- its cost will compare favourably with boilers of the class which `it may be required `to replace.

The ineife'ctive horizontal furnace is eliminated and? it has no flat surfaces to stay. Tt has a high steam generating efliciency, will attain its working pressure in a minimum of time and without injury when so formed, as the, form and construction are such th at a minimum of stress is imposed byv expansion and contraction. It is also economical in the use of uel and is equally adaptable for use with solid, liquid or gaseous -fuel.

Having now particularly described my invention, I hereby declare that what I claim as new and desire to be protect-cd in by Letters Patent, is:

l. A vertical boiler, comprising an outer cylindrical shell, an inner fire box shell, the lower edge of which is secured to that of the outer shell, an annular steam chamber secured within the upper end of the outer shell to the lower end of which chamber the inner lire box shell is connected, the bottom of the annular chamber bein apertured between the outer and inner shell attachments, and a series of tubes extending between the lower part of the inner hre box shell and the bottom of the annular steam chamber.

2. A Vertical boiler, comprising an outer cylindrical shell, an inner lire box shell the lower edge of which is secured to that oi the outer shell which inner shell adjacent its lower end is provided with an inwardly projecting circumferential bulge, an annular steam chamber secured within the upper end of the outer shell to the lower end of which chamber the inner lire box shell is connected, the bottom of th'eI annular steam chamber being apertured between the outer and inner shell attachments, and a series of tubes between the inwardly projecting bulge of the lire box shell and the bottom of the annular steam chamber.

3. A vertical boiler, comprising an outer cylindrical shell, an inner fire box shell the lower edge of which is ,secured to that of the outer shell, Vsaid iire box shell having adjacent the lower end an annular circumferential bulge inwardly projecting from its mean diameter, which mean diameter is maintained above and below the bulge, an annular steam chamber secured withiny thc upper end of the outer shell to the lower end of which chamber the inner fire box the upper end of the outer shell to the lower end of which chamber the inner fire box shell is connected, the bottom of the steam chamber being apertured between the outer and inner shell attachments, and coiled tubes between the bulge of the lire box shell and the underside of the steam chamber, said coiled tubes being disposed in concentric circles within the cross sectional area within the fire box shell. j

5. A vertical boiler comprising an outer shell, an inner shell, a base ring the thickness of which approximates that of the plates from which the boiler is made and onv which the lower. ends of the outer and inner shells are secured, said boiler having a lire door aperture, said base ring being produced upwardly and carried around the lire door aperture to reinforce it and being projected downwardly below the boiler shell plates to form the ash pit.

6. A vertical boiler comprising an outer cylindrical shell, a base ring, an inner fire box shell, the lower, end of which is secured to said base ring, and an outer shell, an annular steam chamber forme-d of two outwardly convcxed annular ends, the outer edges of which are secured the required distance apart within the upper end of the outer shell, an inner shell to which the inner edges of the annular ends of the steam chamber are secured, the upper edge of the inner fire box shell being connected to the lower annular end of the steam chamber, which end is apertured between the inner and outer shells, and coiled tubes extending from adjacent the lower end of the lire box shell to the lower end of the steam chamber. y e

7. A vertical boiler, comprising an outer cylindrical shell, ,an inner lire box shell the lower edge of which is secured to that of the outer shell, said fire box shell having adjacent the lower end an annular circumerential bulge inwardly projecting from its meanl diameter, which mean diameter is maintained above and below the bulge,

an annular steam chamber secured within the upper end of theouter-shell to the lower end of which chamber the inner fire box shell is connected, the bottom of the steam chamber being apertured between the outer andinner shell attachments, and coiled tubes between the bulge of the fire box shell and the underside of the steam chamber, said coiled tubes being disposed in concentric circles within the cross sectional area enclosed within the fire box shell, the adjacent coils in each ring being right and left alternately with the coils interprojecting. f In testimony whereof I affix my signature. l

' SAMUEL HALLANDER.

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