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Патент USA US2124787

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July 26, 1938.
2,124,787
|_. M. LACHASSE
RADIATOR OF‘AEROPLANE’ ENGINES
Filed Dec. 9, 1956
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July '26, 1938.
2,124,787
|_. M. LACHASSE
RADIATOR OF ‘AEROPLANE ENGINES
Filed Dec. 9, 1936
2 Sheets-Sheet 2
Fly. 6
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LOU‘, 5 Mauri Ce LcLclqqsse
INIVLNTOE
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Patented July 26, less
2,124,287
TENT OFFEE
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2124.?87
RADIATQR 0F AEROFLANE ENGENES
Louis Maurice Lachasse, Paris, France, assignor
to Societe Anomyme des Appareils G. A. E...
Neuilly-sur- Seine, France, a corporation oil
France
-
Application December 9, 1936, Serial No. 114,915
In France December 24, 1935
4L Claims. (Cl. 257-425)
The present invention has for its object to of the cooled liquid; the central header 3, how-_
produce a. radiator for the cooling of aeroplane ever, can be omitted and, in this case, one of
engines which offers a minimum resistance
» against advance through the air.
,
A further object is to provide a radiator hav-_
ing a relatively small front surface and a great
depth which radiator is easy to manufacture and
shows a maximum safety as regards watertight
ness.
~
'
Still further objects are to facilitate the possi
ble repairs in radiators of great depth, and to
avoid the construction of headers .of too great a
capacity in order to prevent risks of bursting.
The radiators enabling the aforesaid objects to
15 be obtained have the features which will be ap
10
parent from the following description and the
accompanying claims,
Radiators according to the invention are illus
trated by way of example in the accompanying
20
drawings in which:
>
.
‘
Fig. 1 is a front view of a radiator built. up of
the side headers l serves for the inlet of the liq
uid to be cooled, whereas the other side header
2 is used as the outlet for the cooled liquid.
The radiating network interposed between the
headers i, 2 and 3 comprises hollow parallel
‘blades t arranged horizontally and providing be
tween the free spaces.5 for the passage of the
current of cooling air F.
10x
Each of‘ the headers l, 2, 8 is connected at its
upper partto a tube 8 which, on the one hand,
itself forms a header and on the other hand
serves for the assembly of the various radiator
elements l1, 63,
l3 . . . .
15
.
The tubes 8 of two adjacent radiator elements
are connected to each other (Fig. 4) by male and
female nipples ill, ll ?tting into each other and
clamping a sealing joint it’ between them. At
each end of the radiator the tubes t of the ?rst 20
and of the last elements are closed by a plug it.
The inlet and the outlet of the liquid to be
cooled are effected by means of nipples I5, ll, l8
provided on the tubes 8 of one of the elements
Fig. 3 is aside elevation of‘said radiator.
25
Fig. 4 is an. enlarged section along 4—6 of‘ and arranged perpendicularly to said tubes.
25
Fig. 1.
Said inlet’ nipples l6 and ll and outlet nipple
Fig. 5 is an enlarged section along the line It need not be disposed upwardly, as shown in
5-5 of Fig. 2'.
Figs. 1 to 3 of the drawings, but can be provided
Fig. 6 is a section along the line S—6 of Fig. 5. on the tubes 8 in any favourable position accord
Fig. 7 is a partial perspective View of .a radia
ing to the particular installation.
30
blade elements.
'
'
Fig. 2 is a plan view of said radiator.
30
tor element of Figs. 1 to 3.
'
In this manner, a very simple and tight con
nection between individual elements is obtained
. cording to the invention.
without rubber hoses and collars, and a consid
The cooling radiator illustrated in Figs. 1 to 7 ' erable decrease in weight, bulk and cost of manu
35 has radiating elements, consisting of parallel facture is obtained, while the safety is substan 35
.Fig. 8 is a front view‘ of another radiator ac
‘
blades which provideon the one hand between
tlally increased. -
them spaces for the free passage of the cooling
?uid and, on‘ the other hand, spaces for the cir
culation of the ?uid to be cooled.
are braced by longitudinal tubes of square cross
The hollow blades 4 ofthe radiating network
section; said bracing tubes (Figs. 5 and 6) have
in the direction of the circulation of the current
of air, moving in the direction of the arrow B“.
a projecting end 221 which engages in the open‘ 40
ing of the corresponding tube 222 of the adja
cent radiator element. This arrangement holds
the blades 4 of the various elements I1, I’, l3 in
Each radiator element I1, I’, I3... . . has a depth p
mutual alignment.
40 " The radiator essentially comprises a plurality
of elements I1, l2, l3, juxtaposed to each other
45 which permits ready access to all the members
forming said element, for example for cleaning
and repairing said element.
_ The various radiator elements I‘, I’, l3
V. . are
assembled consecutively to each other, to form
60 a radiator with a relatively great depth P which
gives said radiator a maximum e?lcacity and
e?iciency, and a relatively small front surface.
- Each radiator element I1, I”, I3 . . . has two
lateral headers |-—2 for-the inletof the liquid to
55 be‘ cooled and a central header 3 for the outlet
The locking of the radiator elements thus as 45
sembled with each other is effected by rods or
stays‘ Ii, arranged in the axis of the tubes 81, 82,
83,. clamping nuts l5 e?ecting the locking and
clamping the sealing joints l2 interposed between
the connections In, H.
_
,
A second emptying header I9 is arranged in
the lower part of the radiator. The headerv I9
is composedof the tubes I 9!, I92, I93 correspond
ing to the individual radiator elements I1, I’, l3
and communicates by means of theascending
50
2
2,124,787
headers 3 with all the hollow blades 4 of the
respective radiator element. The ascending
headers 3 open at their upper ends into the head
ers, 8 one of which is provided with the outlet
nipple it for cooled water.
Finally, the locking of the radiator elements
‘can be completed by outer clamping rods 2| ar
ranged at the lower angles of the radiator ele
?ttings disposed between the blades of the radiat
ing networkof each element, said bracing tubes
of each element being adapted to be connected
with the bracing tubes of the adjacent elements,
and removable means mounted on each element
for connecting juxtaposed multiple elements to
each other.
2. In a cooling radiator for aeroplane engines,
ments I1, I", i3 (Fig. 1).
The radiator is advantageously completed by
multiple elements assembled consecutively to each
other in the direction of their own depth, each
the ?lters 23 have a great surface and can be
of movement, two headers for the inlet of the hot
water and the outlet of the cooled water, tubular
cylindrical end pieces for said headers disposed 15
parallel to the direction of movement, cross pieces
between the headers of the individual elements,
nipples arranged in the tubular end pieces of said
?lters 23 lodged in and projecting throughout the element comprising a radiating network having
length of the individual tubes 8. Consequently . hollow blades disposed parallel to the direction
easily dismounted for cleaning, or repairing by
15 simply disconnecting the elements [1, I’, I3,
whereby the interior of the headers 8 becomes
accessible and the ?lters can be easilywithdrawn.
To sum up, a radiator of great depth is provided
which is easy to keep up and to clean as the ‘dis
20 mounting of the elements I1, I", l3 of the radiator
can be e?’ected by simply unscrewing the clamp
ing nuts from the stays i4, 2_i.
The repairing of any of the shallow radiator
elements 11, I’, l3 is very simple since all the sol
25 dered points are easily accessible and the indi
vidual elements are of small'weight and bulk.
headers to establish a communication between
the headers of one element and those of the adja 20
cent element, and removable connecting means,
arranged on each element and ?xing the indi
vidual assembled elements to each other.
3. In a cooling radiator for aeroplane engines,
multiple elements assembled consecutively to each 25.
other in the direction of their own depth, each
Furthermore, if one of the radiator elements is element comprising a radiating network having
hollow blades disposed parallel to the direction
deteriorated, the interchangeability of the ele
of movement, two headers for the inlet of the hot
ments permits a speedy replacement of the de
water and the outlet of the cooled water, tubular 30
30 teriorated element.
This arrangement renders it also possibleto cylindrical end pieces for said headers disposed ‘
add or to eliminate one or a plurality of elements parallel to the. direction of movement, cross pieces
between the headers of the individual elements,
for tuning up tests of the aeroplane or with re
spect to considerable variations of temperature, - nipples arranged in the tubular end pieces of said
headers to establish a communication between the 35
35 such as occur between winter and summer.
Numerous modi?cations ‘can be made to the headers of one element and those of the adjacent
radiator described above-by way of example. As
shown for instance in Fig. 8, the radiating net
work can consist of tubes 35 (radiators known as
“honeycomb”) . In this ?gure, the headers 6 and
‘I4serve respectively for the inlet and outlet of
a
the liquid to be cooled.
Y
As in the previous example, the various radia
tor elements are assembled to each other by stays
I‘ having clamping nuts l5.
.
element and removable connecting means dis
posed axially within said headers and ?xing the
latter and the multiple elements to each other.
4. In a cooling radiator for aeroplane engines,
multiple elements assembled consecutively to each
other in the direction of their own depth, each
element comprising a radiating network having
hollow blades disposed parallel to the direction
of movement, two headers for the inlet of the hot 45
water and the outlet of the cooled water, tubular
end pieces for said headers disposed parallel to
To sum up, a cooling radiator is provided for
aeroplane engines which has a great depth and a
reduced front surface, said radiator being never ‘ the direction of movement, cross pieces between
the headers of the individual elements, nipples
theless easy to mount and to dismount for clean
ing and repairs.
' '
Having now particularly described and ascer
tained the nature of my said invention and in
what manner the same is to be performed, I de- '
clare that what I claim is:
.
65
arranged in the tubular end pieces of said headers
to establish a communication between the headers
of one element and those of the adjacent element,
bracing tubes disposed between the blades of the
radiating network of each element and ‘the brac
1. In a cooling radiator for aeroplane engineai ing tubes of each element in engagement with the 55
multiple elements, each comprising a radiating bracing tubes of the adjacent elements,wand re
network having hollow blades of small depth, movable means mounted on each element for
headers for the circulation of the cooling ?uid, connecting juxtaposed multiple elements to each
. cross pieces between the headers of theindividual other.
60
LOUIS MAURICE LACHASSE.
elements, bracing tubes having male and female
i.
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