US1145688A - Hot-blast heater. - Google Patents

Description

W. M. KINGSBURY.

HOT BLAST HEATER.

APPLICATION F|LED.APR.9. 1913.

Patented July 6, 1915.

2 SHEETS-SHEETI Mbo/mmf W. NI. KINGSBURY.

HOT BLAST HEATER.

APPucAloN FILED Ama. |913.

LKQW Patented July 6, 1915.

WILLIAM M. KINGSBURY, 0F CLEVELAND, OHIO.

` Hor-BLAST HEATER.

maan.

To all whom 'it may concern Be it known that I, WILLIAM M. KINGS- num?, citizen ofthe United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Hot-Blast Heaters, of which the following is a specification.

My invention hasl relation to that class of heaters which are used in heating air driven over same by mechanical force, and adapted for the reception of steam at high or low pressure or any other heat conducting fluids or liquids. The several improvements hereinafter specified may, however, be employed advantageously in heaters of the class known as in-direct radiators, or those which arel located in an air-conducting Hue at a distance fromthe space to be heated. l

An object of my present invention is, to simplify the construction, reduce the cost of a heater by reducing the number of separate pieces and the number of joints to be made up and I attain thisv object, among others, by

-m'eans of the construction and arrangement of parts', to be hereinafterdescribed, 1ny

which the fluids shall be suitably divided within the structure, causing a positive cir lculation through the loops, and exposing a large heating surface of metal to the air to be heated.l ,The header and loops are so constructed that both may be made of castmetal, 'being united by what is known as a slip-nipple joint secured together by means of stud bolts having-a guide-post between nipples so as not to displace same while assembling; it can be readily united for use or disconnected for repairs and the structure be automatically drained of condensed steam without interference with the heat producing qualities of the apparatus. v

The heating, surface of loops is providedlwith a series of extended projections cored out, tapered and curved, which allows for expansion and eliminates any possible water deposits. 'There is no chance of retarding the air as the projections are spaced equally, the 4friction is reduced by the projection-beingl curved at ends. These projections or extended heating surface are set on an angle running'horizontally. A solid corrugated surface is projectedfrom the loop running vertically; it not only acts as heating surface but helps to strengthen the loop.

An embodiment of the invention is illus- Specication of Letters Patent.

Patenten .nay e, lola.

Application filed April 9,` 1913. Serial No. 760,058.

section on the line 3-3 of Fig. 2. Fig. 4 is a section on the line 4 4 of Fig. 2. Fig. 5 1s a side view of the header. Fig. G is a side view of one of the loops.

Referring specifically tothe drawings H indicates a longitudinally extendingheader on which a number-'of loops L are mounted. The header may be made of any desired length, to accommodate the desired number of loops. The header is in the form of a casting having a central longitudinal vertical partition 4, between the steam and condensation chambers, with a tapping 7 to the former, a tapping 6 to the latter, and a Vent tapping 5. The upper part of the side wall of each header is inclined inwardly as indicated at 20, forming a longitudinal recess under the top plate 21 of the header which thus overhangs the recess. Said top plate has openings on each side of the partition 4 to receive the slip nipples 2; and 13 are braces cast on the outside of the header, under the flange of the top 21, for strengthening the same. Said flanges are tapped to receive the cap bolts 12 by which the loops L are attached, said cap bolts being screwed into the lower ends of the loops and are fastened by nuts 11 thereon. It will be seen that the bolts are accessible at the outside, so that any loop can be readily connected or disconnected, and the top plate of the header has a guide rod or projection 1 at the top of the partition 4 for the purpose of holding or locating theloop and header while assembling.

The loops are preferably made of cast metal and stand vertically, each loop having a partition 9 extending nearly to the top thereof for causing a circulation upwardly on the steam side and downwardly on the opposite side, from and to the respective compartments of the header, the bottom plate of each loop having openings to lit on the slightly conical slip nipples 2, to form a tight .joint when the bolts 12Aare joined. The loops are what is known in the art as closed loops'. That is, there is no space, but merely a partition 9, between the upv and down passages of the loop, and, consequently, no air can flow between said passages or through the loop. Thereby the air flowing through theradiator is restricted to the passages between adjacent loops, which is necessary to hold the blast of air in its course. The sides of each loop have vertical ribsv 17 cast in the body thereof and running from top to bottom, and these ribs serve to strengthen the loop as well as to provide additional heating surfaces, and the edges of the loops are beveled to a central line 19, allowing the air to divide freely both ways without great resistance.

Each loop has on its sides extended heating surfaces formed by hollow projections or bosses 16, extending outwardly from the bodyof the loop and cored, tapered and curved, allowing for expansion and preventing any possible water deposits. These projections are spaced apart equally on the sides, and when the loops are assembled they extend or project toward each other, and as the air is forced through the heater, between the loops, it is heated by the body and extended surfaces of the loops, passing around and between the. projections 16 as it flows across the heater.

The loops standing beside each other in each radiator are connectedtogether at the top by means of staples .14 which are dropped into holes 15 in flanges 30 projecting on each side at the top of the loop, and these staples may be clenched under the flanges if desired.

It will be observed, from Figs. 1 and 3, that the radiators stand closely side by side with their loops in substantial contact at the edges 19 of each. This is permitted because the headers H are no wider than the loops. And, also, the top ianges 30 arein Contact between the loops, the whole forminga battery or gang having cross air passages between the loops, closed at the top by the joined flanges 8O and at the bottom by lthe headers I-I,.so the air must travel across the entire gang and in contact with the hollow radiating projections 16, the arrangement being particularly designed for heating a blast of air forced across or through the battery by a fan orthe like, as stated above.-

i To remove any loop it is only necessary to detach the staples 14 and remove the nuts 11 of the bolts 12, permitting each loop to be liftedoil' and removed. The nut can be got at on thev outside. 31 is a drain outlet for condensation on the supply side of the header H. The steam' circulation is from the inlet 7 'to the header and thence upwardly through the loops connected thereto and around the division plate 9 and out through the outlet 6 at the opposite side of the header.

What I claim as new is:

1. A radiator structure comprising a plurality of radiators standing side by side, each radiator consisting of a longitudinal base header and closed loops connected at opposite ends thereto and spaced apart, said spaces forming air passages extending across the structure, and the loops having to plates which meet at their longitudin edges between the radiators and also at their transverse edges between the loops, thereby closing the tops of said spaces.

2. A radiator structure comprisin a plurality of radiators located side by si e, each radiator comprising a base header and a row of spaced loops standing thereon and communicating therewith, the loops being closed and the width of the loops being as great as that of the headers, whereby the edges of the loops of adjacent radiators are in contact, forming continuous air passages extending across the structure between the loops, the loops having top plates which join to close the top of said passages.

3. .A radiator structure comprising a plurality of radiators located side by side, each radiator comprising a base header with a top plate and undercut recesses in the sides under said top plate, the headers of the radiators being located closely adjacent to each other to form a substantially closed bottom for said structure, and a plurality of spaced transverse loops standin upon said plate and communicating wit said header, bolts connecting the plate and loops and accessible at said recesses, the edges of the loops of adjacent radiators extending substantially Hush with the side wall of the header, and top plates on said loops covering the spaces therebetween.

v 4f. A radiator structure comprising a plurality of radiators standing closely side by side, each radiator consisting of a base header and a plurality of loops thereon iand communicating therewith, the headers and loops being of the same width, permitting the headers and loops of adjacent radiators to stand in close relation along their entire height, the loops of each radiator being spaced apart, forming transverse air passages through the structure, and each loop having radiating projections extending into said passages, and also having top plates which join to close the top of said passages.

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