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Патент USA US3073593

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Jan. 15, 1963
3,073,583
C. E. WOOLLEN, JR
BY
_
ATTORNEY
Jan- 15, 1963
c. E. wooLLEN, JR
3,073,583
HEATER
Filed Oct. 28, 1960
2 Sheets-Sheet 2
FIG. 2
INVENTOR
HARLES E. WOOLLEN, JR.
l
ATTORNEY
States Patent @hice
3,073,583
Patented dan. 15, 1963
l
2
3,073,583
rigidly secured at their opposite ends to the tank 1 and
HEATER
Charles E. Woollen, Jr., Devon, Pa., assigner to .lohn
Wood Company, New York, N_Y., a corporation of
Delaware
Filed Oct. 28, 1960, Ser. No. 65,802
Li Claims. (Cl. 263-19)
to the outer shell 16. The outer shell 16 is provided
at its rearward end with an end closure 20 rigidly con
nected to the outer shell 16 by any convenient means,
such as a series of bolts 21 extending through the flange
of said end closure 20 and the shell 16 as indicated in
FIG. l. The forward end of said heater 15 is provided
with a truncated cone portion '22, conveniently rig-idly
particularly adaptable for use in providing heat during
connected by welding to the forward end of the outer
cold weather to buildings, etc., during the course of their 10 shell 16. The truncated portion 22 has a heated air
construction where the permanent heating facilities either
outlet opening 23.
have not been installed or are not in operation. .My
The firing tube assembly includes the member 25 open
improved construction heater may also be used to heat
at its forward end to the interior of the outer housing
other structures which either have no heating facilities, or
16. The rearward end 26 conveniently is in the form
have inadequate heating facilities.
15 of a truncated cone and provided with a series of air
One object of my invention is to provide a construc
openings 27 from the interior of the outerA housing 16
«tion heater wherein the combustion is completely burned
to the combustion chamber 28 formed by the said
with no smoke or odor and the possibility of incomplete
ltruncated member 26.
combustion prevented.
An open end inner shell member 30' is rigidly con
Another object of my invention is to provide a Acon 20 nected at its rearward peripheral end lto the member
struction heater wherein any flame tip from the burner is
25’ of the member 25. The rearward open end of the
prevented from being discharged from the outlet of 4the
inner shell 3ft is substantially concentric with the open
heater.
ing 31 formed in the member 25. The open end shell
Another object of my invention is to provide a con
30 is surrounded lby an intermediate shell member 35
struction lheater wherein the generation of sparks is de
which is rigidly supported on the shell 3d by means of
terred by reason of longer travel of the combustion gas
brackets 36. The forward end of said intermediate shell
before reaching lthe outlet of the heater, and which as
35 is provided with an end closure 37 which is secured
sures that all sparks are quenched before the combustion
to the outer end of the shell 35 by any convenient means,
gas reaches the heated air outlet.
such as by welding.
My yinvention may be more fully understood and fur 30
The supply »tank 1 is provided at its upper portion
ther objects and advantages may become apparent when
with a lill opening having a cap 40. The tank 1 is also
reference is made to the .more detailed description of the
provided with a drain opening plug 41 at the lower por
invention with respect to the accompanying drawings.
tion of the tank, as shown in FIG. 2.
In said drawings; FIG. l is a side elevation, partly in
An oil burner 45 having a nozzle tip 46 is positioned
section, of a construction heater embodying my invention. 35 substantially axially in the truncated cone member 26.
FIG. 2 is an end elevation, partly in section, of the
The burner 45 is connected by suitable piping means
structure shown in FIG. l.
46 to the outlet of the fuel pump 47. The inlet to the
Referring to said drawings; the supply tank 1 for the
fuel pump 47 is connected by piping means 48 to the
supply of fuel for the burner is rigidly mounted at its
ñlter strainer 5d. The inlet to the strainer 50 is con
rearward end on a U-shaped supporting bracket 2. The 40 nected by suitable piping means to the tube 51, the open
axle means 3 are rigidly connected to the opposite upright
distal end of which is positioned near the bottom of the
arms 4 of the bracket 2. Wheels 5 are rotatably mount
fuel tank 1.
ed on the axles 3. For convenience, the axle 3 may
The fan blower 52 is provided with a flange portion
be of bolt form rigidly secured to the upright portions
53 by which the blower 52 is rigidly secured «by a series
d ofl the supporting bracket 2 by means of nuts 6.
of bolts 54 to the end closure 20 of the outer housing
The forward end of the supply tank 1 is provided
16. The flange 53 is provided with an opening 56 which
with a U-shaped supporting bracket 9, the opposite
coincides with a similar opening in the end closure 26,
upright arms thereof being integrally connected to the
`to permit open communication from the outlet side of
tank 1 by any convenient means, such as by welding.
the fan 52 to the rearward end of the outer shell 16
The supporting bracket 9 is of such heighth that when ' and to the combustion chamber 2S through the series
the bottom portion thereof is in engagement with a door,
of openings 27 formed in the »truncated cone member
the tank 1 will be substantially in a horizontal position
26. I ñnd it convenient to provide the member 25 with
with the rearward end supported by wheels 5 and the
a deilecting member 57 to prevent the direct flow of air
forward end supported by `the bracket 9.
from the outlet 56 of the blower to the heater outlet
Each end of the construction is provided with handle
23 at the forward end thereof. The blower 52 is con~
means 1d, conveniently formed of bent pipe or tubing,
nected to .the shaft of the motor I6d. l also find it con
My `invention relates to a construction heater which is
and each handle means is provided with a cross member
portion 12. When it is desired to move the construction
heater, the Workmen will push down on the rearward
cross member 12 of ythe handle means 10, or lift up the
forward cross member 12 of its handle means 10, to lift
the forward supporting bracket 9 from contact with
the door. The construction heater may be facilely moved
on the wheels 5 in counterbalanced position on the axles
3 Ito any ldesired location, and then permitted to rest
securely on the Ifloor by permitting the forward support
venient to connect the shaft of the motor 60 by means
of a flexible coupling member 61 to the fuel pump 47.
The junction box 65 is connected by suitable wiring
means 66 to a suitable source of electric supply.
An elec~
tric igniter member 67 is positioned in the ordinary
manner in proximity to the tip 46 of the oil burner. The
igniter element 67 is connected by suitable wiring 68
to the transformer 70 which is connected, conveniently,
within the junction box 65 yto the electrical source of
supply.
A switch means 75 is located in the junction box 65,
ing »bracket 9 to come in contact therewith.
the switch means 75 controlling the electrical circuits
The construction heater per se, indicated generally
by the reference mark 15, includes an outer shell 16 70 to the transformer 7l! to which the igniter element 67
is connected by suitable wiring, and to the motor 6ft
which is rigidly mounted on the tank 1 by brackets 1'7
operatively connected to the blower 52 and the fuel
3,073,583
3
Operation
16 heated by the forcibly moving heated air.
It will be obvious from the full travel path which
the air must take during its course of flow through my
improved construction heater, that complete combustion
is assured and that any iiame tip from the burner will
be prevented from being discharged through the outlet
Moreover, generation of sparks, and
the expelling thereof through the outlet 23, is prevented
l0 23 of the heater.
My construction heater may be moved readily to
any desired location by the operator pushing downward
ly on the cross member 12 of the rearward handle mem
her lt), or lifting upward on the cross member 12 of
the forward handle means 1G, to position the construc
tion heater in counterbalanced position on the wheels
5, so that the heater may be moved facilely. When
moved to the desired location, the construction heater
is lowered so that the supporting bracket 9 will come
into contact with the floor, and the construction heat
er will remain stationary in the desired location sup
ported on the bracket 9 and the wheels 5.
When it is desired to place the construction heater
in operation; the switch 75 is moved to closed position,
thereby closing the circuit to the motor 60 operating
the fan 52 and the fuel pump 47. Closure of the
switch 75 also closes the electrical circuit of the trans
former 70. Operation of the `fuel pump 47 withdraws
fuel oil from the supply tank 1 through the piping to
the strainer member 5t) and then to the fuel pump 47,
-from the outlet side of which it is delivered under the
desired pressure through the piping to the nozzle tip
46 of the oil burner element 45.
d
pheric air to raise the temperature in a considerable
area around the construction heater. Heat also is radi
ated to the surrounding atmosphere from the outer shell
pump 47. The switch means 75, conveniently, may be
of any of the well-known types in which the switch will
open after a predetermined interval in the event the
burner fails to operate in its normal manner. The elec
trical circuit to the igniter element 67 is adapted to be
opened after a predetermined interval after it is closed
by the inclusion of any of the Well-known cyclic con
trol devices in the circuit.
The circuit to the
15
20
25
30
by reason of the longer travel which the combustion
gases must take before leaving the outlet 23, which
longer travel assures that all sparks are extinguished be
fore reaching the air outlet 23.
I do not desire to limit myself to the specific details
of the construction as herein set forth, as it is obvious
that various modifications may be made therein with
out departing from the essential features of my inven
tion as defined in the appended claims.
I claim:
l. A heater having a fuel burner, comprising an outer
shell member having one outer end remote from the fuel
burner provided with an open heated air discharge outlet
means; closure means at the inner other end of said outer
shell member; -an intermediate shell member, having an
outer end and an inner ends, within said outer shell mem
ber and in spaced relation therewith forming an air pas
sageway between said outer shell member yand said inter
mediate shell member, said intermediate shell member
being open at its inner end »and having closure means at
its outer other end remote from said fuel burner; an inner
shell member within said intermediate shell member and
in spaced relation therewith forming an air passageway
between said intermediate shell member and said inner
electric igniter 67 being closed, an electric spark of suf 35
iicient intensity from the igniter 67 will ignite the atom
shell member, said inner shell member, having an outer
ized fuel flowing through the nozzle tip 46.
end and an inner end, being open at its opposite ends;
The blower 52 being in operation, air under the de
a cup shaped member, having an axial opening there
sired pressure tiows through the blower outlet 56 to the
through of substantially the size of said inner shell mem
chamber surrounding the truncated end 26 of the clo 40 ber integrally connected to the periphery of the inner shell
sure 25, and through the openings 27 into the combus
member at its open inner end proximate said fuel burner,
tion chamber 2S. The detlecting means 57 will as
said cup shaped member being in spaced relation with
sure that the air from the blower 52 is not forced di
said outer shell member `and being open toward the
rectly toward the open air outlet 23 of the forward
outer end of said outer shell member; a combustion
end 22 of the outer shell 16.
chamber íintegrally connected with the inner open end
Assuming that the igniter 67 has ignited the atomized
of said inner shell member, said combustion chamber
oil tiowing through the nozzle tip 46, a flame is pro
having one end means in open communication with the
jected toward the left in FIG. l, and the heated prod
inner open end of said inner shell member; air inlet means
ucts of combustion move from the combustion cham
in said combustion chamber; power operated blower
ber 28 through the opening 31 into the inner shell mem
means, having a discharge outlet means, mounted at the
50
ber 30. The air heated by the products of combustion
inner end closure means of said outer shell member, said
will heat the inner shell 30, and will impinge against
discharge outlet means of said blower means being in
the end closure 37 of the intermediate shell member
open communication with the inner end of said outer shell
35, thereby causing the direction of travel to be reversed
and with said air inlet means of said combustion cham
to through the circular space between the cylindrical
55 ber; and fuel burner means positioned within said com
shell 30 and the intermediate shell 35, in the direction
bustion chamber; whereby, when said fuel burner is in
of the arrows shown in FIG. l. When the heated air
operation, the heated products of combustion move
tiow reaches the open end of the shell 35, the heated
forcibly through said inner shell, impinge against said
air ñow will impinge against the enclosure 25' of the
closure means at the outer end of said intermediate shell
cylindrical member 25.
member Iand then reverse direction of flow and move
60
When the heated air impinges against the closure
4through the space between said inner shell member and
member 25’ of the member 25, the heated air again
said intermediate shell member, and then impinge »against
reverses its direction of tiow, to the left in FIG. 1 through
said cup shaped member and again reverse direction of
open space between the intermediate shell member 35
flow and flow out »the open end of said cup shaped mem
and the outer shell 16, as indicated by the arrows in
ber, mix with atmospheric air under pressure from said
FIG. 1. When the products of combustion heated air 65 blower flowing laround said cup shaped member, and
reverses its direction of flow through the open space
move forcibly through the space between said intermediate
between the intermediate shell member 35 and the outer
shell and said outer shell and flow forcibly through the
shell 16, it is mixed with atmospheric air from the
open heated air discharge outlet of said outer shell mem
blower 52 which passes around the periphery of the 70 ber.
2. A heater having a fuel burner, comprising an outer _
deñecting member 57 and around the periphery of the
cylindrical shell member having one outer end remote
ñange portion of the member 25.
from the fuel burner provided with an open heated air
The heated air then moves forcibly out of the air
discharge outlet means; closure means at the inner other
outlet 23 formed in the truncated portion 22 of the outer
end
of said outer cylindrical shell member; an inter
shell 16, where the heated air mixes with the atmos 75
3,073,5ae
mediate cylindnical shell member, having an outer end
ber integrally connected with the inner open end of said
inner cylindrical shell member, said com-bustion chamber
Iand an inner end,`within said outer cylindrical shell mem
ber and in spaced relation therewith forming an air pas
sageway between said outer cylindrical shell member and
having one end means in open communication with the
inner open end of said inner cylindrical shell member;
multiplicity of air inlet openings in said combustion charn
ber; power operated blower means, having a discharge
said intermediate -cylindrical shell member, said inter
mediate cylindrical shell member being open at its inner
end and having closure means Eat its outer other end
outlet means, mounted at the inner end closure means
remote from said fuel burner; an inner cylindrical shell
of said outer cylindrical shell member, said discharge
member within said intermediate cylindrical shell member
outlet means of said blower means being in open com
yand in spaced rel-ation therewith forming an air passage
munication with the inner end of said ou-ter cylindrical
WayA between said intermediate cylindrical shell member 10 shell and `with said air inlet openings of said combustion
and said inner cylindrical shell member, said inner cylin
chamber; `and fuel burner means positioned within said
drical shell member, having Ian »outer end and an inner
combustion chamber; whereby, when said fuel burner
end, being open at its opposite ends; a cup shaped mem
is in operation, the heated products of combustion move
ber, having an axial `opening therethrough of substantially 15 forcibly through said inner cylindrical shell, impinge
the size yof said inner cylindrical shell member integrally
against said closure means at the outer end of said inter
mediate cylindnical shell member and then reverse direc
tion of flow Iand move through the space between said
inner cylindrical shell member and said intermediate
connected to 'the periphery of the inner cylindrical shell
member `at its open inner end proximate said fuel burner,
said cup shaped member being in spaced relation with
said outer cylindrical shell member and being `open to
ward the outer end of said outer cylindrical shell mem
ber; a combustion chamber integrally connected with the
inner open end of said inner cylindrical shell member,
said combustion chamber having one end means in open
communication with the inner open end of said inner
cylindrical shell member; lair inlet means in said com
bustion chamber; power ioperated blower means, having
cylindrical shell member, and then impinge Äagainst said
cup shaped member and again reverse direction of ilow
and ñow out the `open end of said cup shaped member,
mix with atmospheric lair under pressure from said blower
flowing around said cup shaped member, and move
25 forcibly lthrough the space between said intermediate cylin
drical shell and said outer cylindnical shell and flow
forcibly through the »open heated air discharge `outlet of
a discharge outlet means, mounted at the inner end
said outer cylindrical shell member.
closure means of said outer cylindrical shell member,
4. A heater having a fuel burner, comprising an outer
said discharge outlet means of said blower means being 30 cylindrical shell member having one outer end remote
in open communication with the inner end of said outer
from the fuel burner provided with an open heated air
cylindrical shell and with said lair inlet means yof said
discharge outlet means; closure means at the inner other
combustion chamber; rand fuel burner means positioned
end yof said outer cylindrical shell member; an inter
Within said combustion chamber; whereby, when said
mediate cylindrical shell member, having an outer end
fuel burner is in operation, the heated products of com 35 and an inner end, within said outer cylindrical shell mem
bus-tion move forcibly through said inner cylindrical shell,
impinge against said closure means at the outer end of
said intermedi-ate cylindrical shell member and then
reverse direction of flow ‘and move through the space be
tween said inner shell member and said intermediate shell 40
member, and then impinge against said cup shaped mem
ber and again reverse direction of flow and flow out the
open end of said cup shaped member, mix with atmos
pheric ‘air under pressure from said blower ñowing around
said cup shaped member, and move forcibly through the
space between said intermediate shell and said outer shell
`and ñow forcibly 'through the open heated air disch-arge
ber Iand in spaced relation therewith forming an air
passageway between said outer cylindrical shell member
`and said intermediate cylindrical shell member, said in
termediate cylindrical shell member ybeing open at its
inner end and having closure means at its outer other
`end remote from said fuel burner; van inner cylindrical
shell member within said intermediate cylindrical shell
member «and in spaced relation therewith forming an air
passageway between said intermediate cylindrical shell
member and said inner cylindrical shell member, said
inner cylindrical shell member, having an outer end and
-an inner end, being `open at its opposite ends; a cup shaped
member, having `an axial opening therethrough of sub
outlet of said outer shell member,
3. A heater having a fuel burner, comprising un outer
stantially the size of said inner cylindrical shell member
cylindrical shell member having one outer end remote 50 integrally connected to the periphery of lthe inner cylin
from the fuel burner provided with «an open heated air
drical shell member at its vopen inner end proximate said
discharge outlet means; closure means- at the inner other
fuel burner, said cup shaped member being in spaced
end `of said outer cylindrical shell member; an intermedi
relation with said outer cylindrical shell member and
-ate cylindrical shell member, having an outer end and an
being open .toward the outer end of said outer cylindrical
inner end, within said outer cylindrical shell member 55 shell member; a truncated cone shaped combustion cham
and in spaced relation therewith forming an ‘air passage
ber integrally connected with the inner open end of said
way between said outer cylindrical shell member and
said intermediate cylindrical shell member, said inter
mediate cylindrical shell member being open at its inner
end and having closure means at its outer other end re
mote from said fuel burner; an inner cylindrical shell
member within said intermediate cylindrical shell mem
ber yand in `spaced relation therewith forming an air pas
sageway between said intermediate cylindrical shell mem
ber and said inner cylindrical shell member, said inner
cylindrical shell member, having an outer end and an
inner shell member, said combustion chamber having
one end means in open communication with the inner
open end of said inner shell member; a multiplicity of air
60 inlet openings in said combustion chamber; power op
erated blower means, having a discharge outlet means,
mounted at the inner end closure means of said outer
cylindrical shell member, said discharge outlet means of
said blower means being in open communication with the
inner end of said outer cylindrical shell and with said
`air inlet openings of said combustion chamber; a baffle
inner end, being open at its opposite ends; a cup shaped
member extending outwardly from said combustion cham
member, having 'an `axial opening therethrough of sub
ber, the perimeter of said bafñe member being in spaced
stantially the size of said inner ¿cylindrical shell member
«relationship to said outer cylindrical shell member to
integrally connected to the periphery of the inner cylin 70 afford a restricted passageway for flow of -air from said
drical `shell member lat its Iopen inner end proximate said
blower -to said `air passageway between said outer cylin
fuel burner, said cup shaped member being in spaced
drical shell member and said intermedi-ate cylindrical
relation with said outer »cylindrical shell member and
shell member; and fuel burner means positioned within
being open toward the outer end `of said outer cylindrical
said combustion chamber; whereby, when said fuel burner
shell member; a truncated cone shaped combustion cham 75 is in operation, ythe heated products Áof combustion move
3,073,583
7
forcibly through said inner cylindrical shell, impinge
against said closure means at the outer end of said inter
mediate cylindrical shell member and then reverse direc
tion of ñow and move ‘through Ithe space between said
inner cylindrical shell member and said intermediate
cylindrical shell member, and then impinge against said
cup shaped member and again reverse direction of flow
and ilow out the open end of said cup shaped member,
mix with atmospheric air under pressure from said blower
flowing around said cup shaped member, yand move 10
forcibly through the space between said intermediate
cylindrical shell and said outer cylindrical shell and flow
forcibly through lthe open heated air discharge outlet of
said outer cylindrical shell member.
References Cited in the ñle of this patent
UNITED STATES PATENTS
2,174,663
Keller _______________ __ Oct. 3, 1939
2,565,843
2,720,753
2,896,933
Dennison ____________ __ Aug. 28, 1951
Sharpe ______________ __ Oct. 18, 1955
Barnes ______________ -_ July 28, 1959
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