US2120085A - Stamped metal radiator - Google Patents

Description

June 7,1938. A ALL 2,120,085

STAMPED METAL RADIATOR Filed April 15, 1935 2 Sheets-Sheet l y M, cum

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June 7, 1938. A. P. BALL 2,120,085

STAMPED METAL RADIATOR Filed April 15, 1935 2 Shets-Sheet 2 I12 U612 01".- fllber RBaZJ y M, wbwkq.

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Patented June 7, 1938 PATENT "OFFICE" STAMPED METAL RADIATOR Albert P. Ball, Detroit, Mich,

assignor to Briggs Manufacturing Company,-'Detroit, Mich., a corporation of Michigan Application April 15', 1935, Serial No. 16,322 6 Claims. .(Cl. 257139) This invention relates to radiators or'heat exchange units adapted particularly for heating or cooling purposes, air conditioning or the like. An object of the invention is to provide a radiator or heat exchange unit which is relatively simple in construction, economical to manufacture, durable and serviceable in use, and effective to provide a maximum area of direct heat conducting and radiating surface without, as

t'iveness and ornamental appearance.

A further. object of the invention is to provide a radiator which may be readily and economically pressed or formed,from sheet metal, containing a minimum number of easily formed stampings or parts, and combining, the desired qualities of ornamental appearance and maximum heat exchange efliciency.

Another object of the invention is to provide a radiator or heat exchange unit, preferably stamped or pressed from sheet metal and embodying but three major parts, and-wherein inner and outer double-Wall heat conducting-and radiating surfaces are provided, the. inner'surfaces being adapted to have approximately the area of the outer surfaces.

V A further object of the invention is to provide a radiator which may be composed of inner and outer shells, the outer shell being formed from duplicate stampings and the inner shell b eingv in the form of an elongated open ended sleeve or tube enclosed by but having its walls spaced from the walls of the outer shell whereby inner and outer double-wall heat conducting and radiating surfaces are provided.

Other objects and advantages of the invention will be apparent from the following description and appended claims when considered in connection with the accompanying drawings forming a part of this specification.

Fig. 1 is an exploded view, in perspective, illustrating the component parts of a radiator embodying the present invention.

Fig. 2 is a perspective view of the radiator with the parts assembled.

Fig. 3 is a vertical section taken through line 33 of Fig. 2 in the direction of the arrows.

Figs. 4 and 5 are transverse sectional; views taken respectively through lines 44 and 5-5 of Fig.2 in the direction of the arrows.

Fig. 6 is a front elevation in perspective,-illustrating a partly formed blank for inner shell.

Fig. 7 is a side elevation illustrating a pair of radiator units connected together by piping.

heretofore, sacrificingfdesired qualities of attrac producing the v,

' Before explaining in detail the present invention it is to be understood that the invention is not limited in its application to the details of construction and arrangement. of parts illustrated in the accompanying drawings, since the invention is capable of other embodiments and of being practiced orcarried out in various ways. Also it is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation, and it is not intended to limit the claimed invention herein beyondthe requirements of the prior art. It .is also understood that the term radiator is used herein in a generic sense to comprehend heat exchange devices utilized for heating, cooling, air-conditioning, etc, and that the invention is susceptible of a variety of uses readily apparent to those skilled in. the art.

-Referring to the drawings wherein there is illustrated, by way of example, a present preferred embodiment of theinvention, it will be seen that the radiator or heat exchange unit may, if desired, be composed of three major pieces or parts, each preferably stamped or pressed from sheet metal. Any suitablemetal having the desired characteristics of heat conductivity and radiation may be utilized, such, for example, as sheetsteel, aluminum, copper and their alloys. In the present embodiment the radiator comprises an outer shell or casing composed of duplicate stamped or pressed metal panels A and an inner sleeve-like casing or shell B which may economically be formed from a single metal blank. These parts are preferably welded together along their juxtaposed edges 35 thereby forming between the walls of the inner and outer shells or casing a closed fluid chamber or passage, While at the same time the construction is such-as to provide inner and outer doublewall heat conducting and radiating surfaces exposed to the surrounding atmosphere.

The panels or casing members A are each. stamped from a flat sheet metal blank to provide an outer wall l0 which may be embossed within its area at II and I2 in accordance with 45 provide upper and lower semi-circular notches l8 and II. The juxtaposed notches of the two panels A, when the panels are assembled, mate to form circular inlet and outlet openings for the reception of pipe couplings. In the present example upper and lower pairs of openings I! are shown although it is understood that the radiator may be provided with a single inlet and a single outlet opening. The upper and lower horizontal flanges I are, in the present instance, cut away or' recessed along the lines l8 and N (Fig. 1) so as to embrace and conform to the con-. tour of the 'terminaledges of the inner sleeve or casing B when the parts are assembled together.

' The inner shell or casing B is preferably formed from a single metal blank which may be bent upon itself at 20 to provide spaced parallel walls 2| forming a sleeve-like member having a continuous passage 22 therethrough. In the present instance this passage extends in a vertical direction. The terminal side edges of the walls 2| 4 are flanged inwardly into abutting relation and are butt-welded along the vertical line 23, thus forming a continuous walled sleeve which is open at its top and bottom.

The metal blank, from which the sleeve Biis formed, is preferably provided before the folding operation with a series of rib-forming grooves of channels 24 corresponding in relative location to the grooves or channels l3 in the outer panels when the parts are assembled together.

In assembling the sleeve-like shell B with the outer panels, it will be seen that the upper and lower edges 25 of the sleeve fit snugly within the recessed portions I8 and IQ of the outer panels, these portions being cut to conform to the configuration of the sleeve. tinuously welded to the edges Iii-and IQ of, the outer panels as indicated at.26 in Fig. 3. The abutting edges of the panels A are also continuously welded along the lines 28 and 29 ,as indithereof.

cated in Figs. 2 and 4. In this manner, therefore, the panels A are continuously welded together along their abutting edges and along the upper and lower edges 25 of the inner shell-to provide a fluid tight jacketed casing. The openings |6 and I1 in the outer casing, after assembly, are' fitted with suitable tapped pipe couplings "30 which may be welded in place around the marginal edges of the openings.

With reference to Figs. 3, 4 and 5., it will be seen that the interiorly directed ribs l3 of the outer casing are normally spaced from thewalls of the sleeve B by means of the grooves 24 which provide sufiicient clearance t6 permit the un'ob- 'structed passage of fluid between the walls of the outer and inner shells. Theribs 13 not only provide a desirable ornamental appearance to the 'unit but also increase the heat conducting and radiating surfaces of the outer, shell. In

like manner, the rib-forming grooves 24 of theinner shell B increase the radiating surfaces In the present embodiment the parallel inner and outer walls of the members A and B are secured together at a suitable common point, preferably centrally thereof, so as to prevent buckling or bulging of the walls. This is accomplished in the present instance by interrupting the groove 24a of the inner shell B to provide a central relief 3|. As a consequence, when the parts are assembled together, the inner face of the central rib |3a of each outer panel will abut against the flat ungrooved or.relief portion 3| of each inner The edges 25 are con-.

wall 2|, as shown in Figs. 3 and 5. portions of the walls III and 2| at the locality I The abuttin of the area 3| are pierced to provide alined apertures 32. The walls Ill and 2| are continuously welded at 33 around the marginal edges of. the apertures 22 and these apertures may be closed and the walls of the inner and outer shells rigidly anchored together by means of a through rivet or bolt '34 carrying a spacer 50 overlapping and abutting against the inner faces of the walls 2| around the marginal edges of the apertures 32,.

as shown in Fig. 5.

With reference to Fig. 6, it will be seen that the inner sleeve-like shell B may be produced, if desired, from a single blank 35 which may be pressed and outlet piping 31 and 38 connected to the threaded couplings 30 as illustrated in Fig. 7. If desired, particularly for use as domestic units, the radiator may be utilized as a single individual unit, in which case a lesser number of openings l6 gr I! and couplings 30 may be'provided in the um From the foregoing it will be seen that ,the outer and inner shells provide substantially parallel walls which are spaced apart to form a fluid chamber or fluid passages 38 between the walls 2| and the walls 20 as particularly illustrated in Figs. 4 and 5. Since each of these walls has one inner surface thereof forming a wall of the fluid chamber and, therefore, in heat exchange relation with the fluid flowing therethrough, it will the inner walls 2| which thus provide radiating I surfaces. The unit, therefore, is composed of inner and outer double-wall radiating surfaces,

the inner surfaces. being nearly as co-extensive in area as the outer surfaces and thereby materially increasing the heat exchange efficiency of the device.

1. A sheet metal radiator comprising an inner sleeve-like shell, an outer shell enclosing the same and composed of duplicate stampings welded together along their abutting edges and also along edges abutting the sleeve to form a fluid chamber between the shells and an air passage through the inner shell.

2. A sheet metal radiator comprising an inner sleeve-like shell, an outer shell enclosing the same and composed .of duplicate stampings welded together along their abutting edges and also along. edges abutting the sleeve to form a fluid chamber between the shells and an airpassage through the inner shell, said inner shell comprising a sheet metal blank folded upon it- 2,120,085 self and welded along the meeting edges of the' folds.

3. A heat exchange unit comprising a flat open-ended central tube, a flat outer shell surrounding the tube and secured to its ends, and reenforcing means connected to the shell and extending across the tube.

4. A; heat exchange unit comprising a flat open-ended central tube, a flat outer shell surrounding the tube and secured to its ends, spacing means between the sides of the central tube, portions of the shell and the central tube being in contact with each other adjacent the spacing means on both sides of the unit, and reenforcing means extending across the tube and through holes in the parts of the tube and shell in contact with each other.

5. A sheet metal radiator comprising an inner sleeve-like shell, an outer shell enclosing the same and composed of a pair of stampings welded together along their abutting edges and also along abutting edges of the sleeve to form a fluid chamber between the shells and an air passage through the inner shell.

6. A sheet metal radiator comprising an inner sleeve-like shell, an outer shell enclosing the same and composed of a pair of stampings having opposed angular peripheral flanges welded together along their meeting edges, the line of weld being interrupted along portions at the top and bottom ends of the radiator, said opposed flanges along said portions having relieved sections abutting the edges of the sleeve and welded thereto to form a fluid chamber between the shells and an air passage through the inner shell.

ALBERT P. BALL.

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