US1816111A - Radiator or cooler - Google Patents

Description

July 28, 1931- s. 2. DE FERRANTI ET AL 1,816,111

RADIATOR OR COOLER Filed May 2, 1929 4 Sheets-Shee't l Fig.1. K

m A/Qv Tales y- 1931- s. 2. DE FERRANT! ET AL 1,816,111

RADIATOR OR COOLER Filed May 2, 1929 4 Sheets-Sheet 2 July 28, 1931. s. 2. DE FERRANTI ET AL 1,316,111

' RADIATOR 0R COOLER Filed May 2, 1929 4 Sheets- Sheet 3 Fig.5.

3, Z.$ rwm-ki 9 {I downer Nv NT'd Z July 28, 1931. s. 2. DE FERRANTI ET AL 1,816,111

RADIATORIOR COOLER v I Filed May 2, 1929 4 Sheets-Sheet 4 5- Z. s gevrani, 9-

Patented July 28, 1931 EBASTIAN mm inn 'FTERRANTIAND aoimjmuimea, or

sioLLmwoon, ENGLAND, As-

' sIGiioRsuo-rnRRANTI' me, or nuwyonnu. Y.

- RAIiIATOR R accrue I n ipiieauon fiieaira a; =1eaa,:seria1:no. ea le-mama mama m a, 1928.

p This inventionirelatestoradiators.or coolers more particularly for use in connection with oil immersed :electric transformers.

' T The' invention :has for its object to provide improved constructiou's of radiatorsor cooler's particularly from the point: of view of ease of manufacturezanderectionand efficiein vcy of air circulation; I

Theinvention isparticiilarly applicable in j connection with constructions in accordance with the British specification No. 2815l/27 (Patent No. 299,998).

er unit comprisinga plurality of tubes constructed from welded sheet metal, each tube being joined to its neighbour by a tubular distance piece. I i

The invention consists in a radiator or cooler unit comprising a plurality of tubes constructed from welded sheet metal, each tube being provided with an externally or internally flanged tubular element preferably formed from the tube sheet for welding, brazing or otherwise joining each tube to its 5 neighbour.

The invention also consists in a radiator or cooler unit as set forth above, mounted upon a supporting arm furnished with a plurality of longitudinal ribs which impart rigidity with introduction of a minimum of constriction to flow of cooling medium.

The invention also consists in a radiator or cooler unit as set forth above wherein said arm is formed of bent sheet metal elements v A two flat -S1ClS of each tube are spot welded riveted, screwed or welded together.

The invention also consists in a radiator or cooler unit as set forth above, including a tube traversing the distance pieces or flanged portions and constituting a stiffener and a support for the unit, and the means of attachment of the unit to the appliance to be cooled.

The invention also consists in a radiator or cooler unit as set forth above, wherein the tubes are fashioned in such a manner as to permit direct and easy welding, either internally or externally, to provide integral passages of sufficient area to effect uniform distribution of the heating or cooling fluid to the various elements of the radiator unit I elements thereof. The invention consists in a radiator or coolwithoutthe userof a header orseparatemol lecting chamber.

The nvention also-consists in radiators scribed. I Referring to the'accompanying diagrammat c drawings I Figure 1 illustrates a vertical crossesectional view of .a convenient construction in accordance with the present invention.

Figure 2 is a, front view of one of the or coolers Zsubstantially as hereinafter de- :Figure. '3 is an enlarged vertical cross-sectional view of-a detail. Figurelis a'front view of a modified construction. Figure 5 1s averticalcross=seetion on the line A-A of Figure 4. I I

Figure 6 is a further enlarged fragmental plan view thereof. I

Figures '7 and ,8 are diagrammatic views illustrative of modified methods of construction, and

Figure-9 isa cross-sectional view of a modiiied .form of supporting member for the radiator or cooler unlts.

, In carrying the invention into effect in .one'convenient form by way of cxampleas .iilnstrated in F gures 1 plurality :of fiat tubes to 3, we provide a I a, each of which is formed by pressing from sheet and by weloing at the joint or joints. The flatsides of '.the :tuhe are formed with lateral stiffening iibs 7) by pressing out the sheets and the The flanges may be external as indicated at f in. Figure 9 if desired.

' The'orifiees at the points of attachment of tubular members d may be circular shown or of any desired shape.

In order to mount and support alunit formed of such elements we insert through the tubular members 01 at each end a length of'tubing g furnished with or without a flange for attachment to the transformer casing m (or other apparatus to which the cooler is to be applied). This tube is slotted at intervals so that a substantially uniform circulation of cooling liquid through the 7 various parts of the unit is assured and the upper tube of each pair is furnished with a flanged member Two flanged tube elements j'are rigidly attached to the supporting tubes by welding, and end caps are fitted to the end of the supporting tubes remote from the tank.

Theend of the lower tube 9 of each pair is adapted to be drawn against a seating in r a member is welded to the casing m.

In some cases we provide tubular distance pieces 0 which are internally flanged for example as illustrated in Figure 8 and attached to the tube sheets, e. g. by welding the flanges V I to the sheets.

' Again in some cases we provide arms of angle section having lOIlgltLlCllnELlTlbS upon I which theradiator elements rest without constricting to any appreciable extent thefree circulation of cooling medium. Convenientstructure imposing a minlmum of circulation ly such arms may be-c'onstructed of three sheetelement's a (Figure 9) which may be spot or roller welded, screwed or riveted toing each pair of elements, a surfaceon each element welded to an abutting parallel surface on the adjoining distance piece.

2. A heat exchanger as claimed in claim 1, wherein said separate hollow rigid supporting member comprises bent sheet metal elements rigidly secured together.

3. A heat exchanger as claimed in claim 1 wherein said separate hollow rigid supporting member comprises a perforated tubesubstantially as described.

In testimony whereof we have signed our names to this specification SEBASTXAN ZIANI DE FERRANT'EQ JOHN'TUR NER;

gether to yield an extremely simple yet strong restriction. V 1

It will be appreciated that by these constructions enhanced freedom of circulation of air is also provided since the distance pieces (e. g. 61 Figure 3 or 0 Figure 8) and pressedout or pressed-in flanges, united by welding,

may be of conslderably smaller external dimension than the width of the radiator tubes.

According to a modification in which instead of arranging the radiator units radially Wto the tank as in the example described with reference to Figures 1, 2 and 3 they are ari ranged tangentially as illustrated in Figures 4: to 6'we provide a T piece 39 connected to the i tank from which supportingtubes g or ribbed arms extend both ways for carryingand conveying circulating fluid to sets of radiator tubes formed as above and attached in the like manner toeach other and to the supporting tubes;

The spot welding at 0 between the two sides ,of each flattened tube a may be performed between every lateral stiffening portion 6, be-

S tween alternate lateral stiffening portions, or

' just as desired I in order to impart the required stlffness. 4 r

The examples described above are particu: larly applicable in connection with constructions according to British specification No.

28154/27 (Patent-No.'299,998), but the invention maybe applied in a Variety of ways iii)

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