US1717348A - Radiator core - Google Patents

Description

J. ML EEEEE Rs 1,717,348

RADIATOR CORE J. M. FEDDERs RADIATOR CORE June` l1, 1929.

s shee'tS-snet Filed Jan. 25, 1928 June 1l, 1929. J. M. FEDDERS RADIATOR CORE Filed Jan. 25, 1928 5 Sheets-Sheet 3 Patented June 11, 1929. vUNITED STATES JOHN H. FEDDERS, OF BUFFALO,

'i 1,717,348 PATENT OFFICE.

NEW YORK, ASSIGNOR T FEDDEBS MANUFACTUR- ING GOMPANYNC., OF BUFFALO, NEW YORK, A CORPORATION OF NEW YORK.

RADIATOR CORE.

Application led January 25, 1928. Seriallo. 249,244.

This invention relates to a core which is more particularly intended for use as part of a radiator for cooling the water of gas engines although the same may also be used for other purposes.

One of the objects of this invention 1s to produce a radiator core in which a minimum amount of double metal is used and instead a maximum amount of single thickness of metal is exposed to the atmosphere and thereby increase the radiating eiiiciency for a given amount of metal.

Another object of this invention 'is to increase the strength of the core and thereby enable the radiator to resist injury when used for hea work.

A furt er object of this invention is to provide a radiator core having few parts which are of simple construction, which are capable of beine manufactured readily and which can be quickly, easily and accurately assembled into their proper relative position without requiring specially skilled help or elaborate apparatus for this purpose.

In the accompanying drawings Figure 1 is a fragmentary front elevation of a radiator embodying my invention.

Figure 2 is a top plan view of the same.

Figures 3 and 4 are horizontal sections taken on the correspondingly numbered lines in Fi 1.

Figures 5 and 6 are vertical transverse sections taken on lines 5-5 and 6 6 respectively in Fig. 2.

Figures 7 and 8l are vertical longitudinal sections taken on the correspondingly numbered lines in Fig. 1.

Figures 9 and 10 are perspective views of one of the water tube walls and one of the radiating fins.

In the following description, similar char acters of reference indicate like parts in the several figures of the drawings.

The numeral 20 represents the plurality of vertical water tubes of the radiator core and 2l, the plurality of horizontal air passages arranged between the water tubes.

Each of the water tubes consists of two upright wall strips 22 of sheet metal which are arranged side by side each strip having its opposlte longitudinal edges bent inwardly tol form offsets 23, which engage with the corresponding olfsets of the companion wall strip as shown in Fig. 3, and are connected therewith by soldering or otherwise so as to form 'as shown in Figures `tube wall strip is provided with a plurality of upright stiifening beads 25 which are bent so as to project inwardly and engage the corresponding sti'enin beads 25 of the companion wall strip of t e respective water tube, 2, 3, 4 and 5, thereby bracing these walls relatively to each other and materially strengthening the tube and enabling the same to effectively resist the strains to which the same is subjected.

vEach of the water tube wall strips is also provided between its longitudinal edges with a plurality of horizontal seat beads 26 which are bent so as to project inwardly, the base or bottom on the concave side of these beads being preferably in line and Hush with the outer summits of two corresponding corrugations on the longitudinal edges of the respective wall strip, as shown in Figures 1, 4, and 9. These seat beads on each wall strip are of less depth than the stitl'ening beads and spaced apart from the corresponding seat beads of the companion wall strip, as shown in Figs. 3 and 9, fora purpose which will presently appear.

The air passages are preferably formed between the several watertubes by a plurality of radiating fins or spacers, veach of which consists of a strip 271 of sheet metal which is bent to form a succession of two sets of loops 270 projecting alternating in opposite directions. 'lhe summit of each loop is preferably pinched closely together to form a narrow double thickness edge portion 27 which en' gages with the summits of two corresponding 100 corrugations o n the longitudinal edges of the respective wall strip and also with the bases or bottoms of the seat beadsof the respective wall strip, the several edges 27 of the summits on the lin loops, and the surfaces of thc re- 105 spective wall strip with which they engage being connected by soldering in any suitable or approved manner so that the several tube wall strips and fin strips are practically one integralstructure which is very strong and 110 durable and not liable to give way under heavy duty.

The edge portions 27 of the iin loops do not interlock with these groovesor channels formed on the wall strips by the longitudinal beads 25 but instead bridge the same, as shown in Figs. 4 and 5, whereby the metal of these edges is exposed to the air at these places as shown at 40 and a correspondingly greater radiation of heat to the atmosphere than otherwise would occur if these surfaces engaged each other and interposed a double thickness of metal through which the heat would have to nass. f y

Each loop of the radiating tin has the central part 28 of its plies or sides bent toward each other so that the loop has substantially.

the form of a keyhole, and this bonding is preferably of angular form, as shown in Figures 1, 5, and 6, so that the radiator core presents a cellular appearance. The sides or plies of the loops do not 'engage each other, thereby fully exposing the plies of each loop on its opposite sides and thereby obtaining the maximum radiating ei'ect.

For the purpose of further increasing the radiation of heat by the ns to the atmosphere each side or ply of a loop is provided with a plurality of crosswise slits 29 and the metal between each pair of slits is deflected so as to form a baille web 30 which extends across the concave sides of the respective loop side, as shown in Figs. 1, 5, and 6, and therefore presents an obstruction to the air moving t rough the air passages and causes the latter to take up more of the heat from the water which is to be cooled.

To permit the webs to thus extend across the air path and still permit of bending the plies of the loop into keyhole form each web is shortened by crimping the same, this being accomplished by reversely bending a part of the web as shown at 31 and detlecting a part thereof, as shown at 32.

As a whole this core has greater strength and radiating capacit for a given amount of metal used and cana so be produced expeditiously and at comparatively low cost.

I claim as my invention:

1. A radiator core containin a plurality of water tubes and a plurality o air passages arranged between said water tubes, each of said water tubes consisting of two wall strips of sheet metal each of which has its opposite longitudinal edges offset inwardly and engaging with the corresponding inwardly oH- set longitudinal edges of the companion wall strip, and each wall strip being provided intermediate of its longitudinal oiiset edges with a plurality of longitudinal inwardly deiiected stiiiening beads and a plurality of transverse inwardly deflected seat beads, intersecting said longitudinal beads at right angles, and said air passages being formed by sheet metal radiating ns arranged between adjacent water tubes and engaging with the bases of the seat beads on the walls thereof.

2. A radiator core containing a plurality of water tubes and a plurality of a1r passages arranged between said water tubes, each of said water tubes consisting of two wall strips of sheet metal each of which has its opposite longitudinal edges oiiset inwardly and engaging with the corresponding inwardly oli'- yset longitudinal edges of the companion wall strip, and each wall strip being provided intermediate of its longitudinal offset edges with a plurality of longitudinal inwardly deflected stiffening beads and a plurality of transverse inwardly deiiected-seat beads intersecting said longitudinal beads at right angles, and said air passages being formed by a sheet metal strip which is bent to form a succession of two sets of loops projecting alternately in opposite directions and the summits of each set of loops engaging with the bases of the transverse beads on the exterior of one of the walls of each water tube.

3. A radiator core containing a plurality ,of water tubes and a plurality of air passages arranged between said water tubes, each of I:said water tubes consisting of two wall strips 'of sheet metal each of which has its opposite longitudinal edges offset inwardly and engaging with the corresponding inwardly oli'- set longitudinal edges of the companion wall strip, and each wall strip being provided intermediate of its longitudinal oiset edges with a plurality of longitudinal inwardly delected stifening beads and a plurality of transverse inwardly deflected seat beads intersecting said longitudinal beads at right angles, and said air passages being formed by a sheet metal strip which is bent to form a succession of two sets of loops projecting alternately in opposite directions and the sumf mits of each set of loops engaging with the bases of the transverse beads on the exterior .of one of the walls of each water tube, each of said loops having the central parts of its sides bent toward each other so that the loop lis of substantially keyhole form.

4. A radiator core containin a plurality of water tubes and a plurality o air passages arranged between said water tubes each of said Water tubes consisting of two wall strips of sheet metal each of whlch has its opposite longitudinal edges oiset inwardly and engaging with the corresponding inwardly oifset longitudinal edges of the companion wall strip, and each wall strip being provided intermediate of its longitudinal oiset edges with a plurality of longitudinal inwardly de ected stifi'ening beads and a plurality of transverse inwardly deflected seat beads intersecting said longitudinal beads at right angles, and said air passages being formed by :a sheet metal strip which is bent to form a [succession oftwo sets of loops projecting almits of each set of loops engaging with the bases of the transverse beads on the exterior of one of the walls of each water tube, and

each of said loops having its summit pinched closely to ether to form a rib which forms a narrow e ge for engagin the respective seat on the opposing water tu e wall.

5. A radiator core containing a plurality of water tubes and a plurality o air passages arranged between said water tubes, each of said water tubes consisting of two wall strips of sheet metal cach of which has its opposite longitudinal edges offset inwardly and enlgagi ng with the corresponding inwardly olfset longitudinal edges of the companion wall strip, and each wall strip being provided intermediate of its longitudinal offset edges with a plurality of lon itudinal inwardly deflected stiffcning bea s and a plurality of transverse inwardly deflected seat beads intersecting said longitudinal beads at right angles, and said air passages being formed by a sheet metal strip which is bent to form a succession of two sets of loops projecting alternately in opposite directions and the summits of each sct of loops engaging with these bases of the transverse beads on the eX- terior of one of the walls of each Water tube, and the sides of said loops being slitted crosswisc and the metal between each pair of slits deflected to form radiating webs.-

G. A radiator core containing a plurality of water tubes and a plurality of air passages arranged between said water tubes, each of said water tubes consisting of two wall strips of sheet metal each of which has its opposite longitudinal edges offset inwardly and engaging with the corresponding inwardly offset longitudinal edges of the companion wall strip, and each wall strip being provided intermediate of its longitudinal offset edges with a plurality of longitudinal inwardly deflected sti ffening beads and a plurality of transverse inwardly deflected seat beads intersecting said longitudinal beads at right angles, and said air passages being formed by a sheet metal strip which is bent to form a succession of two sets of loops projecting alternately in opposite directions and the summits of each set Vof loops engaging with the bases of the transverse beads on the exterior of one of' the walls of each water tube, each of said loops having the central parts of its sid es bent toward each other so that the loop is of substantially keyhole form, and each side being slitted crosswise and the metal between cach pair of slits deflected to form a radiating web which is arranged across the concave faces of each side.

7. A radiator core containing a plurality ofl water tubes and a plurality of air passages arranged between said water tubes, each of said water tubes consisting of two walls strips of sheet metal each of which has its opposite longitudinal edges o ffset inwardly and engaglng with the corresponding inwardly ofi'- set longitudinal ed es of the companion wall strip, and each wa l strip being provided intermediate of its longitudinal offset edges with a plurality of longitudinal inwardly deflected stiffening beads and a plurality of transverse inwardly deflected seat beads intersecting said longitudinal beads at ri ht angles, and said air passages being formedg by a sheet metal strip which is bent to form a succession of two sets of loops projecting alternately in opposite directions and the summits of each set of loops engaging with these bases of the transverse beads on the exterior of one of the walls of each water tube, each of said loops having the central parts of its sides 'bent toward each other so that the loop is substantially of keyhole form, and each side being slitted crosswise and the metal between each pair of slits deflected to form a radiating web which is arranged across the concave faces of cach side, and each web being crimped for adapting the length of the same to the length of the respective side. l

8. A radiator core containing a plurality of Water tubes and a plurality of' air passages arranged between said water tubes, each of said water tubes consisting of two wall strips of sheet metal each of which has its opposite longitudinal edges offset inwardly and engaging with the corresponding inwardly offset longitudinal edges of the companion wall strip, and each wall strip being provided intermediate of its longitudinal offset edges with a plurality of longitudinal inwardly deflected stiffening beads and a plurality of transverse inwardly deflected seat beads intersecting said longitudinal beads at right angles, and said air passages being formed by a sheet metal strip which is bent to form a succession of two sets of loops pro'ecting alternately in opposite directions an the summits of each set of' loops engaging with the bases of the transverse beads on the exterior of one of the walls of each water tube, and

the offset edges of said wall strips being corrugated and the summits of said corrugations facing the summits of said loops.

9. A radiator core containiner a plurality of water tubes and a plurality of? air passages arranged between said water tubes, each of said water tubes consisting of two wall strips of sheet metal each of which has its opposite longitudinal edges offset inwardly and engaging with the corresponding inwardly offset longitudinal edges of the companion wall strip, and each wall strip being provided intermediate of its longitudinal offset edges with a plurality of longitudinal inwardly deflected stiffening beads and a plurality of transverse inwardly deflected seat beads intersecting said longitudinal beads at right angles, and said air passages being formed by a sheet metal strip which is Dent to form a succession of/two sets of loops projecting alternately in opposite directions and the summits of each set of loops engaging with the bases of the transverse beads on the exterior of one of the Walls of eaoli Water tube, and the offset edges of said Wall strips being bent into zigzag form and the summits of said offset edges being in line with the bases of the corresponding bases of the seat beads on the respective wall strip and engaging with the opposing 10 summits of said radiating loops.

In testimony whereof I ax my signature.

JOHN M. FEDDERS.

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