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Патент USA US2119134

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May 31, 1938.
J. KARMAZIN
2,119,134
GRILLE CONSTRUCTION
Filed May 31, 1935
INVENTOR.
J2 mv K»; K #14 z m/
ATTORNEYS
‘Patented ‘May 31',‘ 1938
_ . 2,119,134
UNITED STATES PATENT OFFICE“
2,119,134
I
GRILLE CONSTRUCTION
JohniKarmazin, Huntington, Ind., assignor to
General Motors ‘Corporation, Dayton, Ohio, 2. -'
corporation of Delaware
"Application May 31, 1935, Serial No. 24,279‘
2 Claims. (c1. 98-114)
together in a manner later described to provide
an integral unit of strong and rigid construction.
In the form of the invention shown in Figs.
tion for use with an‘ air delivery opening for
2 to 5 inclusive, each ?n is provided with a plu
conditioned air. It is customary in the air con
,’ ditioning art and in other arts where air is cir-' rality of integral spacers‘ I! which are formed by
-_ culated to and from an enclosure to provide drawing, in a plurality of ‘steps, a plurality of
This inventionrelates to refrigerating appa-l
ratus and more particularly to a grille construc
grille means at the openings through which air .tapered tubular projections from thematerial
passes from and to the enclosure to act-as a
vguard to prevent the entrance of large objects
10' into the opening to de?ect the air, and to im
"prove the appearance. Heretofore, various grille
constructions have been employed which have
of the ?ns. The ?n itself is given a transverse
curvature in order to direct the air passing
through the grille at an angle awayv from the per
pendicular. The process of ‘ drawing out the pro;
jections l2 results in a narrowing of the ?n at
the portion thereof where each ‘projection, is
'
This application 5is a continuation in part of‘ drawn out so that the edge of the fin is “necked
1-5 Karmazin application Serial No. 697,756, ?led in” at the points It. In order to provide con
been relatively costly in construction.
- November 13, 1933, entitled “Grille”, now Patent . tinuous curvature to the ?n extending along the
No. 2,032,365,>patented MarchB‘, 1936.
- .It is
object of the present invention to pro
necked-in portions l6 as well as along the wider
portions intermediate the portions IS, the base
-_vide ‘a grille‘ construction which will not only‘ be
of the projection I2 is formed with a step It
which is substantially perpendicular to the axis
?rst cost and which ‘will provide a strong rigid
grille structure in a very simple and economical
of the projection l2 and joins‘the curved portion
20 pleasing in appearance/but willbe economical in
manner.
2.0
of the ?n by shoulder portions 20 and 22 at op
posite sides of the step Ill. The bottom of the
tapered tubular projections I 2'-is left closed as
A further object 'is to provide a grille having
5 a plurality of parallel ?ns provided with integral - at 2|. A plurality of identical ?ns having been
formed in this manner, the ?ns are assembled
?nned spacer means formed from the materia
together with the tapered projections 12 of one
?n telescoped into the corresponding projections
of‘ It
the?ns.
is another
,
I object to provide a novel method
of the next adjacent ?n as illustrated in Fig. 5.
of constructing such a grille.
_
Further objects and advantages of the present ‘Thus, stacked together, the assembled ?ns are 30
pressed together to provide a close telescoping en~
invention will be apparent from the following de
gagement between the projections “ l 2, and the
scription, reference being had to the accompany
ing drawing,,wherein a preferred‘form of ‘the ‘bounding frame is assembled to this structure.
If the grille be of octagonal form as illustrated
present invention is clearly shown. \
in Fig. 1, the assembled ?ns may be cut to octag
In the drawing:
*
35
onal form'after assembly and the frame member.
Fig. i is a front view of a grille constructed ac
69 assembled around the same. The entire struc
cording to the present invention;
Fig. 2 is a fragmentary front view of the grille ture is then bonded by suitable bonding process.
For example, the fins and the bounding frame
and illustrated on a larger scale;
it may be formed from copper coated steel stock
Fig. 3 is a fragmentary perspective view of one
40
and when the grille structure is assembled, the
?n of the grille;
‘
,
Fig. 4 is‘ an end view of the grille before the same may be bonded by placing the structure in
a furnace having a controlled reducing atmos
boundary frame is attached thereto;
Fig. 5 is a cross section on line 5-5 of Fig. 2; phere such as hydrogen where the temperature
45
Fig. 6 is a cross section corresponding to Fig. is raised to a point high enough to melt the copper
5 showing a modi?ed form of the invention; and/ coating and braze the fins together. Alternative
ly, the assembled grille structure may be made
Fig. 7 is a cross sectiongtaken on the same plane
as Fig. 6 and showing the grille‘ structure before from any desired stock and given a solder or tin
dip to bond the structure together or the struc
the welding operation is performed.
50
Referring now to Fig. 1,,there is illustrated a ture may be bonded ?rst by the copper brazing 50'
grille of octagonal form comprising a plurality process above described, and then given a tin dip "
of parallel ?ns it! which are uniformly spaced. to provide a rust-proof coating as well as addi
from each other by a plurality of spacers I2‘. The ' tional strength.‘
grille is bounded by a frame ll of octagonal form.
55 The ?n spacers and frame are suitably bonded
,
In the form of the invention illustrated in
Figs. 6 and 7 the ?ns are formed in the manner 55
2
9,119,184
previously described, except that the bottoms of
the tapered tubular projections 26 which corre
spond to the projections l2 in Fig. 3 are punched
out at 28 so that the telescoped projections pro
vide a continuous tube through the grille struc
ture. A convenient method of bonding this form
of the invention consists in placing a wire or
strip 30 of bonding material such as copper with
in each tube formed by the projections 26 and
10 placing the structure in a hydrogen furnace.
While it has been proposed heretofore to con
struct ?n and tube heat exchange devices in a
manner similar to that described in connection
with the form of the invention illustrated in Figs.
6 and 7, it will be understood that the present
invention provides a structure which has no func
tion as a heat exchange device. Preferably, the
fins may be of the order of one-half inch in width
and the tapered tubular projections of the order
20 of one-fourth inch in diameter. These propor
tions have been found to provide a grille which
gives ample de?ection of the air passing there
through, and provides a structure su?lciently
strong to be used with openings of the largest
25 size normally encountered in commercial prac
tice.
While the form of embodiment of the present
invention as herein disclosed constitutes a pre
ferred form, it is to be understood that other
30 forms might be adopted, all coming within the
scope of» the claims which follow.
35
'
What is claimed is as follows:
1. A grille comprising a plurality of ?n‘ ele
ments bounded by a frame member, said ?n ele
ments having projections extending therefrom,
said projections being telescoped into_ adjacent
projections and secured thereto, said ?n elements
being uniformly spaced apart by said projections
and dividing a ?uid stream adapted to pass
through the grille into a plurality of segregated
streams, each of said ?n elements having a por
tion adjacent said projections pressed to sur
round the projections and extend perpendicular
to the axis thereof for increasing the structural
strength or the grille intermediate its bounding
frame, each of the ?n elements also having a
curved portion extending outwardly away from
the pressed portion thereof on each side of the
grille, and the curved portion of the ?n elements 10
extending substantially continuously throughout
the length of each element and parallel to the
curved portion of adjacent ?n elements to direct
the ?ow of ?uid through the grille.
2. A grille comprising a plurality of fin ele
ments bounded by a frame member, said ?n ele
mentshaving tapered tubular projections ex
tending therefrom, said tapered tubular projec
tions being telescoped into adjacent tapered tu
bular projections and secured thereto, said ?n 20
elements being uniformly spaced apart by said
projections and dividing a ?uid stream adapted
to pass through the grille into a plurality of
segregated streams, each 01' said ?n elements
having a portion adjacent said tapered tubular 25
projections pressed to surround the projections
and extend perpendicular to the axis thereof for
increasing the structural strength of the grille
intermediate its bounding frame, each of the ?n
elements also having a curved portion extending 30
outwardly away from the pressed portion thereof
on each side of the grille, and the curved por
tion of the ?n elements extending substantially
continuously throughout the length of each ele
ment and parallel to the curved portion of adja 35
cent ?n elements to direct’ the ?ow of ?uid
through the grille.
'
JOHN KARMAZIN.
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