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Патент USA US2128763

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Aug- 30, 1938-
Filed Aug. 6, 1936
2 Sheets-Sheet 2
C’Zzzzde /1’. E’ WkzZhr/F;
Patented ,Aug. 30,1938
PATENT qorrics
‘ ap'ro nonr nna'rnn
,Ciaud'e n. Frwhitlark and Frederick A. Weihe,
Jr., Detroit, Micln, assignors to McAleer Manu
facturing Company, Detroit, Micln, a corpora
' tion of Michigan
Application August 6, 1936, Serial No.v94,_588 I
4 Claims.‘ (01. 257-131)
This-invention relates to heaters and- in par
ticular relates to a circular radiator heater for
heating the interior of automobile bodies.
Objects of the invention are to provide an auto
5 body heater construction having the parts thereof
so constructed and arranged that the fan and
motor are readily accessible and removable from
the heater; to provide a heater construction‘ in
which a core is formed of a plurality of ?at
not as e?icient as is desired. In order to obtain
a maximum e?iciency in heat transfer in heating '
the air passing through the heater, thepresent
invention contemplates the construction of a
heater in, which a core is provided, including up
per and lower headers connected by substantially
?attened semi-circular tubes spaced at intervals
along the length of the headers. A suitable heat
ing medium, as hot water, or steam, is supplied
"to one of the headers, circulates through the tubes 10
10 tubular members having fins on their surfaces of. to the other header, and away from this last v
such a construction that the maximum e?lciency header. The core is substantially circular in
in heat transfer is obtained; to provide aheater ' cross section, and the elongated ?at~ portions of I
materially shortened in construction so that it the tubes are directed radially inwardly so that
will require a minimum of space within the auto
air enteringthe heater passes over a maximum
15 mobile body; to provide the de?ecting and baf
area to provide greater eiilciency in heating the
?ing means of such a character that the direction air. Also, in order to insure maximum heating
and volume of the heated air entering the body of the entering air, radiating ?ns are provided on
may be effectively controlled; to provide a-fan the radially directed surfaces of the semi-circular
motor mounting of such a construction that the tubes between adjacent tubes. The particular 20
20 motor may be maintained in a cool_- condition shape and construction of these fins form an im
during operation; and to provide a heater con
portant feature of the present ‘invention; and
struction which is simple to manufacture and the ?ns are constructed from an elongated strip
e?icient in use.
of heat conducting metal, such as copper, for
Other objects of the invention will become ap
spaced 215V
by passing the strip between
25 parent from the following speci?cation, the example,
gears of such a con?guration that trench-like
drawings relating thereto-and from the claims zigzag grooves are provided transversely of the
hereinafter set forth.
strip of a depth substantially equal to the distance
In the drawings in which like numerals are between adjacent tubes.‘ The air passing into
used to designate like parts in the several views ‘ the heater travels radially of the core‘ and as it 30
30 throughout;v
‘Fig. 1 is a front elevational view with parts
is con?ned to thezigzag grooves, these grooves
will prevent direct straight line entrance into the
broken away of an auto body heater embodying V heater thereby causing turbulence in the‘ incom
features of the present invention;
ing air and emciently heating the air;
r Fig. 2 is a crossksectional view with ‘parts in
A motor‘ and fan are provided in the core to 35
35 elevation taken substantially along the line 2-4
draw air radially .therethrough and discharge it
through the forwardlyffacing opening through a
Fig. 3 is an enlarged fragmentary cross-sec
louver plate removably mounted over the open- '
ing, and provided with doors or ba?les forwardly ,
3-3 of Fig. 1;
oi the louver plate and pivotally mounted to the 40
Fig. 4 is an enlarged fragmentary cross-sec- ,
louver plate. The louvers oi the plate and the
‘ of Fig. 1;
tional and elevational view taken substantially
along theline 41-4 of Fig. 2;
Fig. 5 is an enlarged fragmentary cross-sec
.tional view taken ‘substantially along the line
‘45 8-5 of Fig. 4; and,
Fig. 6 is a vertical cross-sectional view showing
a modi?ed structure for mounting the motor
within the core.
bailie doors are so constructed that the discharge
of heated air may be effectively controlled as to
direction and volume to satisfy the requirements _
of occupants of the vehicle..
Another difficulty with prior types of heaters is r . '
that it is di?icult to conveniently remove the fan
and motor from the heater construction, partic
in that heretofore the entire heater re~
It is, of course, recognized that auto body ularly
quires removal from the automobile to permit 0 .
50 heater radiators are old and the present inven
removal of the motor, and in the present inven;
tion relates to an improvement over the known tion the motor and fanare mounted relative to
types of auto body heaters. One of the di?lcul the core so that simply by removing the front»
ties ‘with the prior types of heaters is that the plate and the shroud and the louver plate-as a
air passing through the heater is not heated to unit. and the convenient removal of several sup-- 55
a sufficient extent and the heaters are therefore’
. porting screws for the motor, without disturbing
the mounting of the heater itself in the automo
bile, the motor and fan may be conveniently re
moved through the face of the heater. Also the
present invention contemplates the provision of
,openings through the motor casing and'motor
mounting means communicating with the .rela
tively cool outside air for ventilating the motor
where such ventilation is desired.
For a better understanding of the invention
reference may be had to the drawings in which
an auto body heater generally designated at iii
is mounted upon a supporting member l2, pref
38 of the tubes 36. The strip 4| is cut into
lengths substantially the length of the semi
circular tubes 36 and are then bent to substan
tially the curvature of the tubes 36 and secured
in heat transfer relation to one of the flat por
tions 38 of each of the tubular members 38, as '
by soldering, or a similar manner.
As is evidenced from the above description
relative to the drawings, when in assembled posi
tion the radiating ?ns 40 provide generally 10
radially directed passages into the interior of
the core‘. The zigzag character of the passages
42 prevents direct entrance of air into the in
erably the dash board of the‘ vehicle. The heater
15 structure comprises a base plate i4, preferably . terior of the core and causes turbulence of the
entering air, thereby obtaining maximum heat
formed of a sheet metal stamping, substantially
circular in shape and having a peripheral ?ange
iii. The base plate I4 is provided with diamet
- rically opposed openings i8 adjacent the outer
20 periphery which have threaded bushings 20 ex
tending therethrough. Upper and lower headers
ing of the air.
A motor illv having afan i2 thereon is mount
ed‘ within the core substantially central of the
core and base plate i4, and is secured to the
plate l4 by means of a mounting or supporting 20
plate 64 which is substantially circular in shape
22 and 24 respectively are provided, and as they ' and to which the motor is removable mounted by
are substantially identical only one need be described for an ‘understanding of both. The head
er 22 is preferably constructed of the split type
having a. male half 24 and a female half 24
which are preferably push ?tted together and
are of such ‘a shape that when the two halves are
in assembled position the header has substan
tially ?at elongated side portions‘ 28 within which
transversely extending elongated slots '30 are
spaced longitudinally of the header. The header
22 is enclosed at its forward end and has a re
duced substantially circular opening with an
outwardly directed annular ?ange 32- adjacent
its rear end over which a header tube 34 is con
means of nuts and bolts 56, or the like. The
mounting or supporting plate 54 extends out
wardly beyond the outer periphery of the casing
of the motor 50, and is there provided with open
ings 58 adjacent the outer periphery of the plate
54 at spaced intervals therearound. The open
ings 58 are aligned with openings in the base
plate l4 and suitable means such as screws 60 are
provided for removably securing the supporting
plate 54 to the base Plate l4.
A substantially circular shroud ,62 having a
central opening 64 is removably mounted at the
forward edge of the core formed by the headers 35
22 and the foremost tube It and radiating ?n
nected in communication with the interior of.
the header. The header tube 34 ?ts within the
bushing 20 which in turn ?ts through an open
ing in the dash. The heater is thus held in place
on the dash by means of nuts 35, or the like,
oiiset so that the ‘opening I4 is positioned mate
rially to the rear of the foremost tube 36 and
slightly to the rear and in surrounding relation
which may be threaded over the bushing 20.
Substantially semi-circular ?attened cross
er in length so that it requires a minimum of
40, the shroud 62 being centrally axially inwardly
to the fan 52. This materially shortens the heat
space within the automobile body, and also con
tubes- 36 communicate with the interior of the ' ?nes the discharged air to the opening 84.
headers through the slots 30 and thus communi
A louver plate or ring 66, preferably formed of
cate the upper. and lower headers with each a sheet metal stamping, is substantially circular
other, and with the headers form, a substantially in shape and has a radially outwardly directed
circular core for the heater. The tubes 3‘ are , annular ‘?ange 88 which is adapted to seat against
elongated in one transverse direction through the and be removably secured. in a suitable manner,
tubes so that they have ?attened side portions a to the shroud 82. The face of the plate ‘I is
directed radially inwardly of the heater. Radiat
ing ?ns 40 are secured to, one of the substantial
ly ?at portions 38 of each tube and are located
in assembled position between adjacent tubes. '
The radiating ?ns'40 are formed from a sheet
metal strip of a material with good heat con
provided with louvers ‘ll which extend trans- versely of theface of the plate it and are bent.
inwardly with their faces directed downwardly
so that air‘impinging thereagainst ‘is directed
A pair of doors or ba?ies ‘II and ‘I2 substantially
ducting characteristics, preferably copper, by semicircular
in shape are pivotally mounted to
passing the strips through spaced gears of such the
louver plate 68 so that each baiiie or door may
construction that the strip is shaped to provide be pivoted about two separate vertical axes. The
transversely extending zigzag grooves 42. The mounting means for each of the doors comprises
grooves 42 are trench-like and zigzag in char
a U-shaped hinge support 13 ?xedly secured to
acter, and the grooves 42 may be considered as the inner face of the louver plate 86 by means
being divided into a plurality of portions or sec
of rivets, or the like. A hinge 14 with spaced
tions 44, 46 and 48 transversely of the strip so substantially parallel sides 16 is pivotally secured
that all of the sections lying in one plane longi- . to the hinge support 13
a substantially 65
tudinally of the strip are parallel to each other, vertical axis by means of about
or the like.
as for example all of the sections 44 are parallel The inner end of the side 16 of the hinge
is piv
to each other, while adjacent sections, such as otally attached to one of the doors ‘H or 12 by
44 and 46, are angularly disposed relative to each means of rearwardly projecting lugs 80 on the
70 other so that a direct straight line path through doors which have openings therethrough cooper
the groove is avoided.
ating with openings in the hinge ‘I4 and held in
The grooves 42 have a depth substantially the place relative thereto by means of rivets 82, or
same as the distance between the tubular ele
the like, so that the doors or baiiles may be mova
ment 36 and have a transverse width substan
ble about the vertical pivot pins or rivets 82.
75 tially the same as the straight or flat portions
It is evident from the above that a construc 75
tion is provided for directing the air from the
heater so that as the air passes through the
louvers it is directed downwardly, and by piv
otaliy mounting the doors or bailles so that each
one is pivotaliy mounted about two separate axis,
the volume and direction of the air leaving the
heater may be varied in a great many different
manners. For example, each of the doors may
.be pivoted about their axis so that they may be
pulled away from the face of the heater with the
doors lying in substantially the same plane,‘ or
they may be so pivoted that .the air may be
directed by eitherof the battles to either side of
the heater.
_,A front cover 9| substantially circular in shape
and having a central opening 92 is provided over
the front of the core, the central opening 82 being
in alignment with the doors ‘II and ‘I2 and hav
ing an inwardly directed annular ?ange 83 which
bears against the louver plate 68. The outer
peripheral edge of the cover Si is ?anged as at
94 to ?t over the outer periphery of the shroud
62 in snug engagement therewith and core as
sembly. The cover 9| is removably held in place
on the core by means of spring strips 95 which
.have inwardly curved rear edges which ?t within
depressions in the ?ange it of the back plate I4
and have front tongues 96' which fit within slots
in the front cover 9i.
In the structure shown in Fig. 6 a modi?ed
mounting for the motor within the core is pro
vided in which the motor 50 is enclosed within
a shroud or casing 86 which is suitably secured
to the front face of the motor and extends rear
wardly so that the rear edge is in annular contact
with the motor mounting or supporting plate 54.
Openings 81, 88, 89, and 90 are provided in the base
plate I‘, the motor mounting or supporting plate.
‘ 54 and in the casing of the motor Iii, so that rela
tively cool outside air may be drawn through the
motor by the low pressure area created by the
fan to cool the motor and keep it in proper oper
invention, the scope of which is commensurate
with the appended claims.
What we claim is:
1. In a heater having an open-face, a louver
plate over said open face. said louver plate hav
ing transversely extending, downwardly directed
louvers, bafiies forward of said louver plate for
closing said open face, and elongated mounting
means one end of which is pivotaliy attached to
each of said homes and the other end of which 10
is pivotaliy attached to said louver plate‘.
2. In a heater having an open face, a louver
plate over said open face, the louvers being ar
ranged to direct air passing therethrough down
wardly, baiile plates forward of said louver plate 15
for closing said open face, and elongated mount
ing means one end of which is attached to said .
bail'ies for pivotal movement of said bailles about
axes at an angle to said louvers and the other
end of which is attached to said louver plate for "20
pivotal movement with respect to said louver
3. In a heater having a substantially. round
core and an open face in which a fan and‘ motor .
are mounted within said core, a louver plate over 25
said open face, said louver plate having trans
versely extending downwardly directed louvers,
bai'iles forward of said louver vplate for closing
said open face, and elongated mounting means
one end of which is pivotaliy attached to each of 30
said bailies and the other end of which is pivotally
attached to said louver plate.
4. In a heater having a substantially circular
core with a forwardly facing opening and in
which a fan and motor are mounted within said
core, a shroud mounted on the front of. said core
having a portion extending rearwardly in sur
rounding relation to said fan to provide a con
?ning discharge opening for the heated air, a
louver plate over said opening secured to said
shroud, baille plates forward of said louver plate
for closing said opening. mounting means piv
otaliy attaching said baiile plates to said louver
ating condition. This is particularly important 7 plate, saidshroud, louver plate and ba?les form
the present one in‘ which ing a removable unit, and‘ means removably 45
the motor is mounted~within the core of the mounting said-shroud, louver plate and basics
heater and subjected to the heat from the ligeating as unit on said core.
' in structures such as
Formal changes may be made in the speci?c
embodiments of the invention described without
so departing from the spirit and substance of the
~(ltliA‘llDE H. F. WHITLARK.
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