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Патент USA US3021843

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Feb. 20, 1962
J. KoHoRsT
3,021,833
HEATER
Filed Oct. 20, 1958
2 Sheets-Sheet 1
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arm X.' M
Feb. 20, 1962
_
J. KOHORST
3,021,833
HEATER
Filed oct. 2o, 1958
2 Sheets-Sheet 2
/N VEN TOR
JOSEPH KOHOAPST
ë gym :gw
iid
3,621,333
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Patented Feb.. 20, 1952
1
2
3,021,833
will later appear. A third opening 38 is formed in the
top wall 16 at that end of housing 10 remote from stack
22 and secured to wall 16 in communication with open
ing 38 is the upstanding draft control air inlet tube or
stack 4t). The upper end of stack 46 is outwardly ñanged
as at 42 to support an air intake regulating plate 44 piv
otally attached thereto by a bolt 46 as shown in FIG.
l. Plate 44 can be swung to selected positions hori
MATER
Joseph Kohorst, Rte. 1, Arcadia, Iowa
Filed 0st. 2i), 1958, Ser. No. 768,323
8 Claims. (Cl. 126-360)
My invention relates to a liquid fuel burning assembly
adaptable for use as a tank heater, a space heater, or
a submersible burner and is a continuation-in-part of my
zontally across the top of stack 4i) to permit more or
copending application, Serial No. 591,657, filed lune 15,
less outside air to pass downwardly through such stack
1956, now abandoned.
into and through housing 10 and out of stack 22 as will
later be described in more detail. It will also be noted
One of the important objects contemplated herein is
the provision of an improved heater that has novel com
(FlGS. 1 and 2) that stack 22 is taller than both cylin
bustion means which is more eilicient and more economi
der 28 and stack 40 and stack 40 is taller than cylinder
28 for purposes of draft control as will become apparent.
With reference now to FIGS. 3-5 the combustion cham
cal than previous heaters of the same class so that de
posits from combustion are reduced to a minimum.
Another object of this invention is to provide a heater
of the above class that requires no wick or other com
ponents which must be continuously serviced or replaced.
A further object is to provide an improved heater that
ber assembly or burner unit indicated generally by the
numeral 48 in FIG. 3 is removably insertable into cyl
inder 2S and housing 1t) and is constructed and operates
as follows. A disc shaped plate or base 50 is supported
is capable of continuous operation for long periods of 20 on a plurality of concentrically spaced relatively short
time without danger of improper operation.
depending legs S2 and on its upper surface is provided
A still further object inhering herein is the provision
with the annular upstanding concentrically disposed
of a heater as indicated that is' capable of eiiiciently burn
burner ring or wall 54. This ring has a slightly smaller
ing inexpensive low grade fuel oil including used crank 25 diameter than plate 50 and is provided with a plurality
case oil without producing any noxious smoke because
of holes 56 in spaced relationship throughout its entire
of improved combustion and draft arrangements.
circumference. Spaced above the base plate 56 and above
Yet another object is to provide a generally improved
the burner ring 54 is the disc shaped top plate 5S that
heater of the above kind that is economical to manufac~
is attached to plate Sil by the regularly spaced vertical
ture, durable in construction and capable of efiicient op
eration with a minimum of service.
30 rods or posts 60 extending between and Secured to said
plates about the respective circumferences thereof so
' that the burner ring 54 is inter-mediate the lower ends
Other objects and advantages of this invention reside
in the details of construction and correlation of the vari
ous parts and will be apparent as the description proceeds.
This invention consists of novel parts and combina- .
tion of parts to be hereinafter described whereby the ob
jects set forth are attained, as pointed out in the claims,
and illustrated in the accompanying drawings in which:
FIG. 1 is a perspective view illustrating a preferred
embodiment of my new heater installation,
FIG. 2 is an enlarged longitudinal sectional view taken
on the line 2-2 of FIG. 1,
FIG. 3 is an enlarged perspective View of the combus
of such post and the axis of base 5t). Top plate 58 is
provided with a plurality of spaced air intake holes 62
for the purpose of providing better combusiton and
spreading the flame as will later appear. Extending be
tween the base plate 50 and the top plate 58 and at
tached thereto is the concentrically disposed air and fuel
intake tube or cylinder 64 which is of lesser diameter
40 than the burner ring 54 so as to provide on the upper
surface of plate Si) a fire trough 66. The lower end of
tube 64 is provided throughout its circumference with
regularly spaced air and fuel outlet vents or notches 68
tion chamber assembly of my heater with portions cut
in communication with trough 66 and the upper end of
away to more specifically illustrate the construction there 45 tube 64 registers with an axial opening 7G in plate 58.
of,
Secured to the perimeter of the top plate 58 and ex~
FIGS. 4 and 5 are like cross sectional views each taken
tending upwardly therefrom is the annular tubular Wall
on the line 4_4 of FIG. 3 but showing different posi
member 72 provided to serve as a guide means against the
tions of adjustment for draft control in the combustion
inner wall of cylinder 28 when lowering assembly 43 into
assembly, and
such cylinder and in removing it therefrom. Also for
FIG. 6 is an enlarged fragmentary sectional View of the
this purpose a pair of diametrically opposed hanger rods
needle valve used with this heater.
'74 are suitably secured to wall 72 so as to extend up
Referring to the -drawings the illustrated heater com~
wardly therefrom where they each terminate in a hook
prises a rectangular closed housing 10 of horizontally
76 for the purpose of engaging the top edge of cylinder
elongated formation having parallel, upstanding longitudi
65 2S as shown in FIGS. l and 2.
Such rods 74 serve also
nal side walls 12, end walls 14, a top wall 16, and a
as handles for manually lifting assembly 48 in an obvious
bottom 18. In the top wall 16 adjacent one end of hous
ing 10 there is formed an opening 20 and securedv at its
A fuel and air regulating tube 78 is snugly mounted
lower end to the top wall 16 in communication with open
within but freely rotatable relative to the air and fuel in
ing 2@ and extending upwardly therefrom is' an exhaust 60 take tube 64. This tube 7S projects upwardly through
stack or flue pipe 22 provided with a suitable damper
opening 70 in plate 58 at tis upper end, and its lower end
means 23. Intermediate opposite ends 14 of housing 10
which rests on the base plate 50 is provided throughout
another opening 24 is formed in the top wall 16 and
its circumference with regularly spaced air and fuel out
secured to such top wall around opening 24 is the out
let vents or notches 80 corresponding to the similar
wardly flanged lower end 26 of an upstanding open top 65 notches 68 in tube 64. Thus by rotation of tube 78 rela
cylinder 28. A fuel tank 30 of any desired shape and
tive to tube 64, notches Sil and 64l can be placed in vary»
size is supported on a pair of spaced rigid strap arms 32
ing positions of registration to selectively regulate the size
extending between and secured at respective opposite ends
of the airvand fuel passageway from the inside of tube
to stack 22 and cylinder 23 as shown in FIG. 1. Tank
73 to the tire trough 66. To prevent over adjustment
3i) is provided with the usual filler plug 34 and fuel 36 70 relative to notches y80 and 64, rotation of tube 78 is con
used may be any of the various grades of fuel oil includ~
trolled by placing a pair of spaced stops 82 (FIG. 3) on
ing kerosene and also including used crank case oil as .
the top plate 58 and providing a lifting rod 84 bent at its
manner.
,
v
assises
3
lower end 86 for attachment to the upper outer surface
of such tube so as to extend therefrom first intermediate
stops 82 and then upwardly as shown in FIGS. 2 and 3
where it terminates in the handle member 38. Rod end
d.
the discharge from stack 22 is, for all practical purposes,
undiscernible.
It is submitted that the invention shown and described
S6 is movable only within the limits defined by stops S2
is aptly suited to achieve the purposes intended and is
characterized by a combination of highly useful and mu
and th1 s the rotation of tube 78 is correspondingly lim
ited. In the lower end of tube 78 there are ñxedly
tually cooperating elements that combine their respective
and proportionate functions in accomplishing the objects
mounted superimposed plates 90, 92 and 94. Plates 90
sought to be obtained.
It will be understood that the phraseology employed
herein is for the purpose of description and not for limita
tion and that modifications and changes inthe construction
and 94 are preferably of steel and coniined between them
is plate 92 that is preferably of pressed asbestos or similar
heat insulative, fireproof material. These plates serve as
a drip plate for catching fuel and the purpose of the as
bestos layer is to keep the upper plate 90 relatively cool
so that fuel Will not gasify in tube 78.
Fuel 36 is fed to assembly 48 by gravity through a
conduit 96 extending from tank 30 to a needle valve hous~
and arrangement of this invention can be made within
the scope of what is claimed, without departing from the
spirit and purpose thereof. it ,is thus intended to cover
by the claims, any modified forms of structure or mechan
ical equivalents which may be reasonably included within
ing 98 (FIG. 6) disposed within cylinder 28 in axial
their scope.
alignment with and spaced above tube 78. Housing 98
I claim:
l. In a heater, a horizontally elongated closed housing
has the upper and lower plugs 190 and l02 spaced apart
to provide a chamber 104 in communication with conduit 20 having horizontal top and bottom walls, a dampered air
96. A valve stern 106 threadably disposed through plug
exhaust stack on and rising from said top wall around
an opening therein at one end of said housing and a
lâlû has a lower conical end 108 disposed in chamber 104
dampered outside air intake tube on and rising from
and designed to seat in the ñared upper end 110 of bore
112 in plug 102. The upper end of rod 106 carries a
said top wall around an opening therein at the other end
knob 114 for manual manipulation.
25 of the housing to provide air circulation through said
Thus constructed and arranged, this heater will operate
housing, said intake tube being shorter than said exhaust
stack, said housing top wall having a third opening therein
in the following manner. Assembly 48 (FIG. 3) is in
serted into cylinder 28 as described so that bottom plate
disposed intermediate and spaced from said exhaust stack
50 is disposed within housing 1G and is elevated slightly
and said air intake tube, an upstanding open ended burner
from bottom 18 by the short legs 52 as shown in FIG. 2. 30 cylinder secured to said top wall around said third open
Assembly 48 will extend through opening 24 in housing
ing, said cylinder being shorter than said intake tube, a
top 16 and top plate 5S of assembly 48 is in the lower
burner assembly in the interior of said housing spaced
portion of cylinder 28 above the plane of top 16. Fuel
below said top wall so as to register with said third open
36 from tank 30 is permit-ted to drip by gravity through
ing and said burner cylinder, means for providing said
the needle valve means shown in FIG. 6 and the rate of 35 burner assembly with air communication for combustion
drip is controlled by rotation of stem 106m a well known
with said third opening, fuel supply means to said burner
manner. With bore 112 of the needle valve concentrically
assembly through said third opening, and means in said
positioned over tube '7-8, the fuel drips onto the drip
burner assembly for discharging the products of com
plate 90 at the bottom of such tube where it passes out of
bustion into the path of air Ilow within said housing.
the notches 80 therein and the notches 68 in tube 64 into 40
2. A heater construction including an elongated hori
the tire trough 66. The fuel in trough 66 is easily initially
zontally disposed housing, an upstanding cylinder on said
ignited by inserting an ignited wick of any suitable type
housing intermediate the ends thereof and communicat~
at the end of a long handle down into the bottom of tube
ing with the interior thereof, a burner assembly disposed
78 and once this is done the intensity of the fire is con
within said cylinder and having a combustion chamber
trolled by regulation of the needle valve.
extending into said housing, said combustion chamber
Cylinder 28 intermediate stacks 22 and 40 is the only
being provided with an outlet port, means providing said
source of air and fuel intake for purposes of combustion
combustion chamber with air communication for com
in the fire trough 66 and the arrangement of holes 62 in
bustion through said cylinder, fuel supply means to said
the top plate 58 and the regulation of the opening in vents
combustion chamber through said cylinder, means in said
or notches 80 and 68 at the bottom of tubes 78 and 64
combustion chamber for discharging the products of
serve to spread the flame and feed the air and fuel evenly
combustion into the interior of said housing, a dampered
into trough 66 where combustion takes place. In thÉ ar
air outlet stack on said housing in communication with
rangement, the use of the asbestos plate 92 in keeping the
the interior thereof at one side of said cylinder and
extending vertically higher than said cylinder, and a
drop plate 90 relatively cool as described, prevents the
fuel from gasifying in tube 78 so that it flows into the fire 55 dampered air inlet stack on said housing in communica
trough 66 before igniting. Combustion once started can
tion with the interior thereof at the opposite side of said
cylinder and said inlet stack being vertically higher than
not be flooded out since any surplus fuel flowing into
trough 66 will overflow through holes 56 in the burner
said cylinder but shorter than said outlet stack whereby
ring 54. The products of combustion are effectively car
air circulation is provided through said inlet stack to
ried out through the dampered stack 22 by the coopera~ 60 and through said housing around the combustion chamber
tion of air ñow down through the dampered stack 40 into
of said burner assembly to said outlet stack.
3. A heater, comprising a horizontally elongated closed
housing 10, through the housing 10, around the bottom
housing having vertically spaced horizontal top and bottom
of assembly 48 and out of stack 22. In actual tests this
walls, spaced vertical stacks rising from said housing
burner has successfully burned the various types of fuel
previously described cleanly, evenly and with a maximum 65 and each in communication with the interior thereof, one
of said stacks being shorter than the other, a burner
output of heat in relation to the fuel consumed. In addi
assembly within said housing, air supply means inter
tion the combustion has been so complete as to substan
mediate said stacks into said housing and burner assem
tially eliminate carbon, soot and smoke. It will be under
bly for purposes of combustion, and vent means in said
stood that this heater operates on a down draft principle
with air for combustion entering through cylinder 28. 70 burner assembly within said housing having intake down
draft communication with said shorter stack and exhaust
Because of the height diñ'erence between stack 22 and
draft communication with said other stack.
cylinder 28, this heater will function without stack 40
4. A heater, comprising a horizontally elongated closed
but not in the eflicient manner as can be obtained when
housing having vertically spaced horizontal top and bottom
stack 40 is used. Without stack 40, the discharge from
stack 22 will be black only smoke whereas with stack 40, 75 walls, spaced vertical stacks rising from said housing and
5
3,021,833
6
each in communication with the interior thereof, one of
top plate, an upstanding apertured burner ring concen
said stacks being shorter than the other, a vertical cyl
trically disposed on said base plate intermediate the
inder rising from said housing intermediate said stacks
perimeter thereof and the lower end of said tubular mem
and in communication with the interior thereof, said
ber to form a tire trough surrounding the lower end of
cylinder being shorter than both of said stacks, a burner
said tubular member, the lower end of said tubular mem
assembly within said housing spaced below said top wall
ber having an opening in communication with said fire
and having down draft intake communication with said
trough, said top plate having an opening in communica
cylinder, said burner assembly having exhaust draft com
tion with said fire trough, a regulating tube rotatably
munication within the interior of said housing, and the
disposed in said tubular means, means on said regulating
draft communication between said shorter stack through 10 tube to selectively vary the effective size of the opening
said housing to said taller stack carrying away the prod
in the lower end of said tubular member, a drip plate
ucts of combustion from said burner assembly.
in the lower end of said regulating tube, and means to drip
5. A heater, comprising a horizontally elongated closed
liquid fuel onto said drip plate; said fuel flowing from
housing having vertically spaced horizontal top and bottom
said drip plate into said tire trough for purposes of com
walls, spaced vertical stacks rising from said housing and 15 bustion, means intermediate the ends of said housing
each in communication with the interior thereof, one of
providing a down draft air supply to said burner assembly
said stacks being shorter than the other, a vertical cyl
for purposes of combustion, and vent means in said
inder rising from said housing intermediate said stacks
burner assembly within said housing for discharging the
and in communication with the interior thereof, said
products of combustion into said air flow.
cylinder being shorter than both of said stacks, a burner 20
8. A heater, comprising a horizontally elongated closed
assembly disposed within said cylinder and having a
combustion chamber` extending into said housing so as to
housing having vertically spaced horizontal top and bottom
walls, spaced vertical stacks rising from said housing and
be spaced below said top wall, said combustion chamber
each in communication with the interior thereof, a ver
having draft outlets Within the interior of said housing,
tical cylinder rising from said housing intermediate said
said burner assembly receiving down draft air for com 25 stacks and in communication with the interior thereof,
bustion through said cylinder, and the draft communica
a burner assembly disposed within said cylinder and hav
tion between said shorter stack through said housing to
ing a. combustion chamber extending into said housing so
said taller stack carrying away the products of combustion
as to be spaced below said top wall, said combustion
from said burner assembly.
chamber having draft outlets within the interior of said
6. A heater as defined in claim 4 including damper 30 housing, said burner assembly receiving down draft air
control means in said stacks.
for combustion through said cylinder, and the draft com
7. In a heater, a closed housing, means providing air
munication between said stacks through said housing
flow into said housing at one end, through said housing
carrying away the products of combustion from said
and out of the opposite end, a burner assembly in said
burner assembly.
35
housing intermediate the ends thereof, said burner assem
bly comprising a pair of dise shaped plates, means secur
References Cited in the ñle of this patent
ing the same in vertically spaced concentric relationship
UNITED STATES PATENTS
to form a top plate and base plate respectively, said top
485,892
Shivlar ______________ __ Nov. 8, 1892
plate being above the top of said closed housing and said
658,963
Schifferle _____________ __ Oct. v2, 1900.
base plate being within said housing, a tubular member 4
connecting said plates in concentric relationship thereto
and being diametrically smaller than the same, said tubu
lar member in registration with an axial opening in said
960,563
1,101,354
Latil ________________ __ June 7, 1910
Tebo ______________ __ June 23, 1914
2,193,085
Beetschen ______ _r_..____ Mar. l2, 1940
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