US1625665A

US1625665A - Cooling radiator for aeroplanes and other vehicles and process for its manufacture

Info

Publication number: US1625665A
Application number: US80186A
Authority: US
Inventors: Lamblin Alexandre
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-01-07
Filing date: 1926-01-09
Publication date: 1927-04-19
Anticipated expiration: 1944-04-19

Description

April 1927' A. LAMBLIN COOLING RADIATOR FOR AEROPLANESANDDTHER HICLES AND PROCESS FOR ITS MANUFACTUR Original Filed Jan. '7. 1925 2 Sheets-Sheet 1 v AMBLIN v COOLING RADIATOR FOR AEROPLANES AND OTHER VEHICLES AND I PROCESS FOR ITS MANUFACTURE Original Filed Jan. '7. 1925 2 Sheets-Sheet 2 Afiril 19,19'27. A L 1,625,665

' ments, havin ment on linev 3-1-3 of Figure-2,

I I '30 radiator with 48* on line ,15-1 5 of Figure Patented A r, 19,-1927-.

[was UNITED sraras rATaNr OFF-ICE.

Arum-nan manna, on runs, amen.

MANUFACTURE. i

Original applioationaled January 1, 1925, Serial a...

1,012, ma in France January 24. mas. new and thisapplication filed Jenner; 9, 1826. Serial No. 80,188.

' This invention relates tocooling tors for aero lanes and other vehices, comprising easil; manufactured cooling elea small weight and a large radiatin 'sur ace. *These elementsare characteriz by their cross section be ng in the .shape of a V, the branches of which have a large surface of contact .with the, cool ng air. The present application s a .d1vision 1 of my co-pending patent application 1012, filed J anuary 7th, 1925. r

\ radia- Several constructions according to the in- I vention: are shown by way of example in the accompanying drawings in which Figure 1- is an elevation of a cooling eley .ment according to the invention Figure2 across sectioniof the said elef ment on line 2-2 of Figure 1,

. Figure3 a longitudinal Figures 4 and 5 two cross'sections'oi two modified constructions ofthe-element shown in-Fi real-3' gu sections of a third modi- 2 fied' construction of the element of Figures a 1 to 3, these four sections corresponding to four successive'stages of manufacture of the said element, FigurelO is a annular headers, provided with elements like those in Figures 1 to 9; this radiator being mounted on the fuselage I of the' aeroplane,

V Figure 11 isa cross section of this radi 85 ator on line 11-11 of F1gure 10,

Figure 12 is a section'similar ra iator,

' Figurel? is a longitudinal section of a radiator like the preceding ones, provided with a special air regulating-device,

Figure 14 is a partial plan of the said radiator, f Figue 15 is a cross section of this radiator 13, and I Q Figure 16 is a side elevation, on-an enlarged scale, of a shutter of the-a r re ulating device of the radiator shown in igures 13-15.

The coolin element (Figures 1 to 3) r is constitute by two sheet metal plates 51 and 52 bent along their central rib so as to form two different angles and These tion: ct the longitudinal section of a re 10, of another construction .of thecoonme mm'roiz r03. annornms vAnn OTHER vanrcnns m .rnocnss non rrs two plates are inserte d into each'other (Figure 2,) and, owing to the diflerence-in the angles a and ,8, the two plates 51 and 52 direction of the arrows 56 in the free space left between the plates 51 and 52. The aircirculates both between the two wings of these two wings An element of light weight and with great I i radiating surface is thus obtained, which element ensures a division of the air currentinto elementary veins properly guided along the element.

described can be manu- The element just factured by means'of different roces'ses.

Thus, Figure 4 shows a mod ed construe-- .tion of the'element of Figures 1 to 3, in

which the plate 51 has. two turned over.

edges 58 which cover the edges of the plate 52 and are soldered to them; a much stronger assembly of the plates 51 and 52 on each other'is thus obtained.

*the V formed by the element and outside 1o 'The cooling element. with V-shaped cross "section could also be made, as shown in Fig- 'ure 5', from a single plate 59 suitably bent to that oft'over; one of the free edges 60 of this plate is bent over and soldered to the other edge;

This method of manufacture offers the advantage of reducing by half the number of soldered joints and therefore of simplifying the manufacture and reducing to a great extent the risk of leakage of water.

Y The new elements with V shaped cross section could also be manufactured in. a single piece without any soldering as indicated in Figures 6 to 9. A round or flattened tube 61 (Figure v6) is used. This tube is stped out or expanded so as to leave flat one of its faces 61 and bending the other face 61 (Figure 7). Finally, the element is given its final shape by bending or stamping out (Figures 8 and 9).

The invention coversv the previously described cooling elements (Figures 1 to 9) in themselves, whatever be the special grouping in which these elements are used; the invention covers also certain arrangements or methods of grouping hereinafter described and ofi'ering special advantages.

Thus, Figures 10 and 11 show a radiator constituted by a certain number of elements with V-shaped cross section connected by means of

tubes

65, 66 to a front header 62 and a rear header 63 placed in the interior of the hood 6% of the vehicle and fitting the rounded shape of the said hood (Figure 11).

lVater inlet and

outlet ducts

67, 68 conmeet the

headers

62, 63 to the jacket of the engine.

The

arrows

56 and 57 show respectively the circulation of the water and that of the air in the radiator.

It will be seen in Figure 11 that owing to the arcuate shape of the headers 62. 63, the elements 50 with V-shaped cross section diverge relatively to each other starting from the headers. It is therefore possible to bring the bases of the tubes 66 as close together as may be desired on the headers, without the V-shaped elements 50 fouling each other; on the contrary. these elements, in diverging from each other. always leave between them a free passage for the cooling air.

Thus, the combination of V-shaped elements with curved, for instance circular or semi-circular, headers makes it possible to fit the greatest possible number of elements on a given length of the header, and to obtain for a radiator of a given weight, as great a radiating surface as possible.

To facilitate the penetration into the air of the radiator with V-shaped elements, and to enable it to fit more easily the rounded shape of its support, for instance of the aeroplane fuselage, these elements can be given a longitudinal shape convex or concave towards the exterior of the radiator, as indicated in Figure 12.

The invention covers also the combination of a radiator with elements with straight section in the form of a V, such as the radiators of Figures 1 to 12, with means enabling two air circulation currents to be admitted into the said radiator, one longitudinally of the cooling elements, and the other transversely of the said elements; means such as shutters, or screens make it possible to regulate advantageously at will one or the other of the two currents or both together.

Figures 13 to 16 show a construction of that arrangement.

Under the hood T3 of the aeroplane is mounted a radiator with

headers

62 and 63 on which are branched elements 50, the radiator being such as that of Figures 10 and 11 for instance. This radiator replaces thus a portion of the hood and is adapted to the general shape of this hood and the elements 50 project freely into the atmospheric air.

An air inlet chamber 110 is provided in the hood. A shutter 84 is pivoted at 85 in front of the radiator. Other shutters 74 a: e provided in the interior of the radiator; each of these shutters is pivoted about a pin 75 (Figure 16) and secured to a. control rod 76 and to a return rod 77 with a spring 78.

All the control rods 76 of the shutters 74 are connected together by a coupling rod 79 which the pilot can pull in the direction of the arrow 80 by means of well known con trol mechanism, with lever and toothed quadrant for instance, not shown in the drawings.

The radiator of Figures 13-16 works as follows: when the pilot does not pull on the coupling rod 79; the springs 78 pull the rods 77 in the direction of the arrow 81 (Figure 16) and keeps the shutters 74 applied closely against each other; these shutters thus completely close the interior of the radiator. Under these conditions, the radiating group 50 is traversed only in the ordinary manner by the air current 106: the veins of this current are besides guided by the whole of the shutters 74 which form an air guide plate.

When the pilot wishes to get a greater cooling of his engine. and to increase the supply of air to his radiator. he o erates the control mechanism so as to pull in the direction of 80 the coupling rod 79, all the shutters 74 turn about their spindles 7 5 and cock the springs 78. Under these conditions the air current- 83 which gets into the interior of the bonnet 73 through inlets not shown in the drawings, is divided into elementary currents S3 83 etc. which pass between the shutters 7 1 and combine with the air current 106 which normally plays on the elements 50.

In short, the combination described in the foregoing makes it possible to obtain three entirely different states of working of the radiator.

1. The shutter 84 is lowered, and the shutters 7e are applied against each other; the air current 106 is stopped by 84, and the air current 83 by 74, and the radiator works with the minimum cooling.

2. The shutter 84: is raised and applied against the hood (dotted position in Figure 13) the shutters 74 are applied against each other; the air current 106 passes'freely through the radiating gr0up50, but the air current 83 is stopped by the shutters 7 4:, and the radiator works thus with the mean or average cooling.

3. The shutter 84 is raised and applied against the hood, and the shutters 74 are opened in the positions shown in Figure 13;

the'air currents

83 and 106 pass through the radiator as already explained, and the rabetween the three states of cooling hereinbefore indicated, by raising more or less the shutter 84 and opening more or less the shutters 74. i

' 'It will b'e seen that in the construction of Figures 13 to 16, when the shutter 84 of this radiator is raised and applied against the hood 73 of the aeroplane, and when the shutters 74 are opened as shown in Figure13',

-

theair veins

83 and 106 are mixed together,

and superposed in the free spaces 90 provided between the adjacent elements (Figure 15). these free spaces 90 decrease in their outside portions owing to the inclination of the wings of the V' the

air currents

83, 106 are held and guided between the adjacent wings of the adjoining V elements.

The air currents 1C6 alone remain in the inner free space 91 of the V constituted by each element 50 and continue to circulate freely in the said V without any possibility of being" deflected'by the auxiliary air cu'r rent 83.

I claim: j P

In a cooling radiator for aero lanes and other vehicles, the following com ination; a front header, a rear header, tubular elements of. V-shaped transverse section, said elements having free spaces therebetween and being interposed between the front and the rear headers and disposed longitudinally with respect'to the direction of movement of the vehicle, shuttersivotally dis sed on the base portions of tlie tubular 5 means for controlling said shutters in a manner either to open said shutters with respect to each other in order to permit a transverse current of air to penetrate between the elements or to close said shutters with respect to each other, and means forguiding a current of air longitudinall to circulate in part between the wings 0 the -V of each element and inpart between the frees aces formed between said elements,

,te'r'current of air, when said shutters are cloTsed with respefit to'giichflgher. n testimony'w ereo a ysi ature.

ALEXANDRE MIN."

ements,

saids utters serving. also to guide saidlat-