US1599010A - Ftjrnace-wall construction - Google Patents

Description

Sept. 7 1926. I 1,599,010

R. T. HASLAM FURNACE WALL CONSTRUCTION Filed August 16, 1923 5?) M WW (Tub Patented Sept. 1926.

. UNITED STATES ROBERT 'r. menus, or nnnmonnunssacirusn'rrs, ASSIGNOR .ro STANDARD DE- VELOPMENT COMPANY, A CORPORATION OF DELAWARE.

" FURNACE-WALL CONSTRUCTION.

Application filed August 16, 1923. Serial No. 657,827.

This invention relates to heating systems,

and will be fully understoodfrom the following description, taken in connection with the accompanying drawingyin wh1ch Fig. 1 is a vertical longitudinal section of a furnace and heating chamber embodying construction in accordance with the p'rlnciples of the invention;

Fig. 2is a sectional view, showing a detail of another form of construction contemplated; and

Fig. 3 is a section of another embod1-' ment of the in'y'ention. f

As is well kn" wn, the-efficiency of heat take-up in furnaces in general is undesirably low and the limitations have been considered as quite effectual. I

. In accordance with-thepresent invention, I am enabled to secureiinci'eased utilization of the heat available," 'and with relatively inexpensive construction in the refractories in the heatingchamber, while also bringing to advantageous use the factor of radiation transfer.

Referring more particularly to Fig. 1 of the drawing, the reference character]. designates a fire-box or furnace, and mounted in any suitable manner are shown tubes '2 to be heated. Such tubes may be those of water-tube boilers, oil heaters, etc. At intervals along the chamber space are projectiens 3 extending iromthe walls so as to resent a considerable exa geration or redundancy of exposure, an? additional -virtual extensions of radiat ng surface are effected by brick 4 or the like; these being in loose or open placement-to. allow free passage of the hot products of Icombustion and at the same time being located in radiating relation to the tubes .2 or objects to be heated. Such exposures present a correspondingly increased meansfor taking up heat from gases beyond the zone wherein substantial combustion takes place and correspondingly function also to radiate it in turn to the tubes or objects in sight which or other objects to the in the old practice.

of the hot gases and in radiating relation with respect to the tubes 11 are heat-receiving and radiating exposures 12, connected with the'wallor indpendentthereof if preferred, except as to necessary support, an placed in loose or openformation so as to allow free passage of the hot gases.

In the form.shown in Fi 3 the object to be heated is another cham er; the chamber 20 for illustration being the heating side and the chamber 21 the side to be heated.

Examples of instances of such character are muflie furnaces, heating fines for gases and chemical products, flues for recuperative recovery of Waste heat from 'hot waste gases for preheating air for furnaces, etc. The projections 22 exposed to the hot gases take up heat and function in turn to radiate heat to the partition wall 23 which conducts the heat to thefcooler gas in chamber 21. Additionally the wall 23 radiates heat to the exposures 24, and these in turn give up heat by conductionto the cooler gas in contact. While most convenient as a matter of support, the elements 22 and-24 need not necessarily be attached to the walls.

The materials employed in'construction of radiating elements according to the present invention may comprise the usual refractories. By reason of the increased efliciency resultant from this invention, however, relativel expensive materials, carborundum, urable alloys of iron, etc., can be used for conductingi partitions, or the-like, where such materials would not have been justified In the constructions illustrated, it will be seen-that heat is taken up by the exposedelements provided and these in turn as heat conversion transfer elements transfer the heat tothe objects to be heated.

While I have described my invention by reference to certain details, it will be understood that this is for the purpose of illustration to make the invention clear, and is not limitative, and the invention is to be considered as limited onl as defined in the following claims, in whic it is my intention to claim all inherent novelty as broadly as the prior art permits.

What I claim --is: p

1.- In combination, a combustion zone, a

heating chamber arranged to receive hot exposures positioned in said chamber in upon said object.

2. In combination, a fire box, a heating chamber into which hot gases from said fire box pass, refractory, redundant exposures in said chamber and positioned beyond the zone in which substantial combustion takes place, anda tubular body to, be heated arranged adjacent said redundant exposures, whereby such exposures take up heat from said hot gases and radiate the same upon the tubular body.

3. In combination, a fire box, a heating chamber into which hot gases from said fire box pass, refractory, redundant exposures projecting inwardly from the walls of the heating chamber beyond the zone in which substantial combustion takes place, and a plurality of tubes to be heated arranged in the heating chamber and adjacent said redundant exposures, whereby such exposures take up heat from the hot gases and radiate the same upon the tubes.

ROBERT T. HASLAM.

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