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Патент USA US3051172

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Aug» 28, 1952
Filed Dec. 10. 1958
2 Sheets-Sheet 1
Aug- 28, 1962
Filed Deo. l0. 1958
2 Sheets-Sheet 2
ß \.
ilnite drains arent @fire
Patented Aug. 28, 1962
heating of the housing and a proper relative movement
of the gases of combustion through the exhaust stack ir
Harry J. Porter, R0. Box 1475, Post, Tex.
Filed Dec. 10, 1958, Ser. No. 779,386
5 Claims. (Cl. 126-360)
Still further objects will appear from the following
description `and appended claims when read in conjunction
The present invention relates to stock water heaters and
more particularlyV to an improved heater adapted for sub
mersion in the water in a stock watering tank to heat
the Water and prevent freezing of the open Water tanks
during winter weather.
It is the general custom in large stock ranches, partic
ularly in the middle western range country, to spot water
ing tanks at various points in the grazing land or at the
stock barns and sheds to provide a constant supply of
drinking water for the grazing stock. While such water
Weather, considerable difficulty is experienced in the winter
months in preventing the freezing of the drinking water
and avoiding contamination of the drinking Water by the
respective of ambient air conditions.
with the accompanying drawings wherein:
FIGURE 1 is -a perspective View illustrating a sub
mersible heater built in accord with the present invention
operatively disposed in a cylindrical stock Watering tank;
FIGURE 2 lis a longitudinally vertical sectional view
of the heater shown in FIGURE l illustrating the interior
construction of the heater and one of the tangentially ar
ranged air inlets;
FIGURE 3 is a longitudinal horizontal sectional view
of the heater of FIGURE 1 illustrating lin dot dash lines
the location of the exhaust stack relative to the tangential
end air inlets and the preferred arrangement of the burner
jets; fand
FIGURE 4 is a transverse vertical sectional view taken
products of combustion when the presently available com 20 through the air inlet at the right of FIGURE l and look
mercial heaters are employed. Examples of prior sub
ing toward the opposite end of the heater to further i1
mersible heaters proposed for such usage are disclosed in
lustrate the interior structure of the heater and the hood
United States Letters Patent 512,191 to J. Hanrahan dated
and stack structure.
January 2, 1894; 662,738 to C. Rascher dated November
FIGURE 5 is an enlarged transverse vertical sectional
27, 1900; 806,307 to H. Townsend dated December 5, 25 View of one distributing branch pipe ofthe burner of FIG
1905; 1,189,104 to W. Heaps et al. dated June 27, 1916;
2,535,545 to D. Moss dated December 26, 19501; and
2,606,548 to D. Clifford dated August 12, 1952. Such
prior art heaters have been found to be ineffective either
URE 4 illustrating the interior structure of the burner jet.
Referring now to the drawings and more particularly
to FIGURE 1, numeral 10 designates an open top cylin#
drical comparatively shallow stock watering tank of suit
due to ( 1) an inefficient transfer of the heat to the water 30 able diameter which is filled with water to a level indicated
with resultant damage to the heater through distortion of
at 12. While the tank 10 is preferably circular for ac
the heater parts, (2) inefficient burning of the fuel and
commodating the stock to be watered, other tank shapes
consequent expense in operation and deposit Iof soot and
may be alternately employed.
like combustion products in the Water causing contamina
In accordance with the present invention, and with
tion of the water thereby rendering it unpalatable to the 35 reference to FIGURES l-S, the means for heating the
stock, and (3) the `complication of the structure leading
water in the tank 10 is illustrated therein and generally
to an inordinate initial expense and troublesome main
`designated at 14, partially submerged or immersed below
tenance requiring the services of skilled and expensive
the water lever 12 and centered at the bottom of the tank
maintenance personnel.
10. This heater unit 14 comprises a liquid tight elon
It, accordingly, is the primary object of this invention
gated combustion housing 16 providing a radiating sur
to provide Aa submersible stock water heater of simple
face in direct contact with the water. The housing 16
construction assuring eiiicient heating of the drinking
extends diametrically or radially across the bottom of tank
water with a minimum of maintenance and reltaive free
10 and defines a liquid tight combustion chamber .18.>
dom from contaminating deposits of the products of com
This combustion housing 16 is preferably a one-piece
' aluminum casting and is formed with end walls 19 yand an
Another highly important object of this invention resides
arcuate top 20 integrally joining parallel spaced »apart up
in the provision of a submersible stock water heater of
right sidewalls 22 and 24 which terminate at the bottom
simple construction having a high combustion efficiency
in horizontal outwardly extending flanges 26. These
to assure substantially complete combustion of the fuel
flanges 26 are secured -to a separate horizontal base sup
component and to minimize the presence of contaminat~
port plate 30 by any suitable means `such as mounting
ing products of combustion llue gas.
screws 31 and preferably rests on a suitable sealing
Still another object of the present invention resides
gasket 32.
in the provision of an elongated submersible heater having
One of the end Walls 19 is provided with an aperture'
a burner element extending from end to end of an en
adapted to receive a fuel supply nipple 34, connected to'
closing housing providing a radiating surface in direct 55 a suitable supply 35 having a fuel control valve 36.>
contact with the water with tangentially arranged combus
Nipple 34 at its end 38 is threadedly connected to a
tion air inlets at its opposite ends and an axially centered
suitable burner 40 for vfacilitating combustion of fuel
exhaust stack to provide a swirling helical supply of air
supplied from `a suitable supply source (not shown).
moving around the burner inwardly from the opposite
The burner 40 comprises a U-shaped tubular manifold
ends toward the centered exhaust stack to Vassure an e?i
42 centrally supported in spaced relation within the
combustion chamber 18 above the base plate 30 by the
cient supply of combustion air to the burner `and a fluid
nipple 34 at one end and a bracket 43 or other suitable
heat transfer medium for heating the housing while pre
means at the other end. The parallel fuel distributing
venting direct ñame contact with the housing and housing
branches 44 and 46 of the yU-shaped manifold 42 are
“burn out” spots incident to direct flame contact.
65 connected together at 'their corresponding ends by a cross
A further object of the present invention is to provide
tube 48 which forms yan internally threaded intake ex
ya heater according to the preceding object with air inlet
tension 50 at its center in alignment with the longitudinal
and exhaust stacks of predetermined relative size to pro
axis of the combustion housing 16 for connection wit-h
vide an eiïicient fuel-air ratio assuring substantially com
the fuel supply pipe nipple 34. Web members 52 com
plete combustion of the fuel component, an adequate duid 70 posed
of rods or other suitable structural forms are welded
heat transfer medium and a predetermined rate of air
between the parallel branch pipes 44 and 46 to brace and
movement through the heater housing to effect an even
rigidly connect these pipes together. Each parallel branch
44 and 46 is formed with ñattened bosses 54 and 56
respectively at uniform axially spaced intervals.
flattened faces of the bosses 56 associated with branch
pipe 46 are inclined at an angle toward the‘fuel inletV
at' 50 while the faces of the bosses 54 associated with
branch pipe 44 are inclined at an angleV in the opposite
direction. These bosses 54 are spaced in staggered rela
tionship with respect to the bosses 56 so as to provide
diagonal pairs of bosses 54 and 56 having parallel and
opposed faces. Each of the bosses 54 and 56 is provided
with a through internally threaded bore 58 formed `at
right angles with its associated boss face and communi
eating with the interior of its associated branch supply
pipe. These bores 58 are adapted to receive the threaded
ends of jet tubes 60 thereby providing a series of parallel
diagonal pairs of jets extending upwardly at an angle and
terminating equidistantly from the longitudinal axis of
ceiving and exhausting the products of combustion to
the atmosphere above the water. The stack 80 is longi
tudinally and laterally centrally mounted on the top of
the combustion housing 16, the center of which is inter
sected by »a horizontal diagonal line interconnecting the
centers of the diagonally opposed air inlet flues. The
lower end of the exhaust stack 80 is threadedly received
in a >boss«like socket 82 which forms an aperture 84 in
the arcuate top 20 of housing 16 whereby the stack 80
communicates with the combustion chamber 18. The
upper end of the exhaust `stack is provided With a stack
cover 86 removably secured thereto by bnackets (not
shown) or other suitable means to provide access to the
pilot fuel line 66. This cover 86 is formed with a skirt
which extends downwardly below the end of stack 80
in radially outwardly spaced relation thereto to assure a
uniform and continuous outward movement of »the prod
Vucts of combustion irrespective of ambient air conditions
the combustion housing 16. 'The diagonal axes of each
and to prevent entry of the elements into the stack. '
associated pair of jets 60 intersect each other coincident
In accordance with the present invention, the combined
with the longitudinal axis of the combustion housing 16 20
cross-sectional areas of the two cylindrical air inlet flues
at a point above the burner 40. Thus the burner 4t)
68 exceeds the cross-sectional area of the exhaust stack
comprises a series of equally spaced apart >co-acting pairs
80 by 1/8. This predetermined relative size of air inlet
of jetsAV 60 extendingdiagonally of the burner 40 and the
to combustion gas exhaust and the skirted flue covers
axis of the combustion housing 16, each pair being par
provides for an eñicient fuelaair ratio, thus assuring sub
allel with the other pairs of jets whereby, in operation,
stantially complete combustion of the fuel at all times
two ñne streams of fuel issue from each pair of jets at
by supplying the necessary critical excess air for com
high velocity into confluence between and above the jets.
A premeasured quantity of primary combustion air is
plete combustion and by causing the proper relative
movement of combustion gases through the exhaust stack
continuously introduced into each -Íuel stream through a
lateral air intake oriñce 62 of ñxed diameter provided 30 irrespective of atmospheric pressure conditions tending
to inñuence the introduction of air and the exhaust of
in the wall of each jet -tube 60 adjacent and upstream
the gases. Thus, it is »apparent that continuous supply
from the manifold fuel »discharge orifice 64 individual
of a premeasured amount of combustion air is achieved
to each fuel jet.
by the relative sizes of the air inlet ñues and the exhaust
As la consequence, it will be appreciated that the air
ilue, and a continuous supply of a fixed premeasured
fuel mixture issuing from the jets 60 produce independent
amount of fuel-air mixture as achieved by oriñces 62
columns `of flame between the branch supply pipes 44
and 64 will establish continuous optimum and complete
and 46, which columns of each associated pair of jets
merge to form a substantially ovoid body of ñame in
In operation of the heater 14, a suitable fuel such as
cross-section. Thus, a series of substantially parallel
ovoid ñarne bodies are formed along the longitudinal 40 manufactured gas, natural gas, liquiñed petroleum gases,
butane or propane, is `suplied from a supply source (not
axis of the combustion housing 16 and at an langle thereto.
shown) yto the burner 40 which is lighted by the pilot
In order to ignite the burner 4G, a pilot fuel pipe line
‘66, lwhen the control valve 36 is opened. The col
66 is provided and is’illustrated to extend parallel to the
umns of flame issuing from the burner jets 60 in close
burner -fuel supplyÍ pipeline 35 and into the combustion
contiguity diagonally of the burner and the «longitudinal
chamber 18 where it terminates adjacent one of the fuel
axis of the combustion housing 16 produce a series of
jets 60.
parallel ovoid ñame bodies as hereinbefore described.
In order to provide a source of primary and secondary
The tangential disposition of lthe air-inlet passages 78
combustion air, the fluid tight elongated combustion
relative to the combustion chamber 18 directs the com
housing 16 which is adapted to be immersed below the
bustion air intro the combustion housing À16 at diagon
water level 12, is provided with a pair of upright cylindri
a‘lly opposite ends thereof to provide a swirling, helical
cal air-intake ñues 68 which are threadedly or otherwise
supply of air which moves upwardly from beneath the
-suitably secured to housings 70 at diagonally opposite
burner tube 40 and between the branches y44 and 46
corners of the combustion housing. The air-intake ñues
in `a helical path from opposite ends towards the centered
are adapted to extend upwardly above the water level 12
exhaust 80. As the gases are swirled towards the ex
»and are provided at their uppermost ends with hoods or
haust stack 80, the movement thereof -forrns the ovoid
stack covers 72 which are secured thereto by brackets
ñ-ame bodies into spiralled Áshapes positioning the flame
74. These hoods 72 are generally semi-spherical in shape,
bodies rin substantially centered spaced apart relation
having skirts which extend downwardly below the upper
with the combustion housing §16.
ends of the ñues 68 in radially outwardly spaced relation
As a consequence, it will be appreciated from the fore
thereto to assure a uniformly constant air intake irre 60
going that Áhelical motion of the air establishes an efñ
spective of ambient air conditions and to prevent entry
cient supply of combustion air in a swirling rmass rising
of the elements into the flue.
from beneath the burner 49 land also a ñuid heat trans
The lower immersed ends of the air-intake flues 68
fer medium for heating the combustion housing 16 while
communicate with chambers 76 respectively formed by
housings 70. The chambers 76 each communicate with 65 preventing direct ñame contact therewith lthus preventing
“burn-ou ” spots incident to direct llame contact on the
the bottom of the combustion chamber 18 below the
metalic heat radiating surface. This swirling ñow of
burner 40 through passageways 78 formed at a slight
gases permits a free flow of exhaust gases from both
angle for directing the »air supply into the chamber 218
ends of the combustion housing \16 towards the centrally
below burner 40 and diagonally toward the center thereof.
disposed exhaust -gas stack S0 and provides for a longer
As a consequence, ‘the entering air at each end forms a
flow path through the combustion housing to Aobtain a
vortical ñow path inwardly toward the longitudinal center
maximum transfer of heat to the drinking -water through
of the combustion housing 16 and a centered exhaust
the radiating surface of the housing 16.
stack 80.
While the present invention has been described in
As clearly appears from the drawings, exhaust stack
80 takes the form of an upright cylindrical flue for re 75 connection with the heating of a body of stock drinking
water, it is to be understood that this is only for illus
trative purposes in applying the principle of the inven
tion and that the invention may be applied for the sub
merged heating of other fluids if desired.
The invention may be embodied in other specific forms
without departing from the spirit of essential character
istics thereof. The present embodiment is therefore to
=be considered in all respects as illustrative and not re
strictive, the scope of the invention being indicated by the
appended claims rather than by the foregoing description,
and all changes which come within the meaning and
range of equivalency of the claims are therefore intended
to be embraced therein.
What is claimed and desired to lbe secured by United
States Letters Patent is:
l. A submersible heater for use in heating a coniined
body of ñuid comprising a longitudinally elongated hous
ing defining a combustion chamber ‘and having air inlet
body of ñuid comprising an elongated liquid tight housing
having an arcuate top and defining a combustion cham
ber, said housing having means defining air inlet ope-n
ings disposed at diagonally opposite corners thereof at
the level of the bottom of the combustion chamber and
a centrally located exhaust opening formed in the top
thereof such that movement of air from said inlets at op~
posite ends of said housing is directed in opposite vorti
cal swirl paths toward said centrally located exhaust in
surrounding relationship to the longitudinal axis of said
housing; a fuel burner supported in said housing in up
Wardly spaced relation to said air inlets and having burner
jet means disposed above said air inlet openings in a longi
tudinally extending plane along the lowermost inner cy
lindrical portion of said vortical swirl path to receive com
bustion air from said inwardly moving air, said burner jet
means providing for a series of substantially parallel
flame bodies :along the longitudinal axis of said housing
openings yat its opposite ends located at the level of the
and centrally disposed within the vortical swirl path, said
bottom of the combustion chamber and a centrally 1o 20 flame bodies being substantially ovoid and diagonal to the
cated exhaust opening in its top wall, said openings being
longitudinal axis of said housing whereby said vortical
relatively arranged to one another and to said housing to
swirl path of combustion air spirals said ovoid bodies in
assure a movement of inlet air inwardly from the opposite
the direction of said exhaust opening; inlet air stacks com
ends of said housing in a vortical swirl path extending in
municating with said air inlets of said housing and adapted
surrounding relationship to the longitudinal axis of said 25 to extend upwardly through said Ibody of duid to dispose
housing and sweeping the walls of said housing; a fuel
their upper ends above the upper level of said body of
burner supported by said housing in upwardly spaced re
fluid; an exhaust stack communicating with said exhaust
lation to the end air inlets and having burner jets dis
opening and adapted to extend upwardly through said
posed substantially in a predetermined longitudinal plane
body of fluid to dispose its upper end above the upper
above said inlet openings so as to be along the lowermost 30 level of said body of fluid; and hoods associated one with
inner cylindrical portion of said vortical swirl path to re
each of said stacks.
ceive combustion air from said inwardly moving inlet air,
4. The heater defined in claim 3 wherein said burner
said burner jets being positioned to locate the flame jets
jet means comprises `a pair of parallel rows of spaced
longitudinally centrally of said housing in the center of
apart jets, said jets being arranged in parallel diagonally
the vortical swirl path to directly heat the main body of 35 opposed pairs at least one in each of said rows and pro
inlet air which in turn sweeps the housing walls to sub
jecting upwardly at an inclination toward each other to
stantially uniformly heat the housing walls in the passage
effect a coniluence of separate streams of fuel intermedi
of said body to inlet air to said exhaust opening; inlet
ate and above said rows.
'air stacks communicating with said end air inlets of said
5. The heater of claim 1 wherein said end air inlets
housing and adapted to extend upwardly through said 40 are disposed at diagonally opposite corners of said hous
body of ñuid to dispose their upper ends above the
ing with their respective inner chamber ends inclined with
upper level of said body of fluid; an exhaust stack com
respect to the longitudinal axis of the combustion cham
municating with said exhaust opening and adapted to
lber in the direction of said centered exhaust opening so
extend upwardly through said body of fluid to dispose
that vortical flow of inlet air through said combustion
its upper end above the upper level of said body of fluid; 45 chamber from siad inlet air openings is in tangentially
and respective hoods associated with each of said stacks
opposed directions.
and having skirts extending in radial outwardly spaced
relation to said upper stack ends to shield the upper ends
References Cited in the file of this patent
of said stacks and assure a uniformly constant operation
irrespective of ambient air conditions and prevent entry 50
of the elements into said stacks.
Butterfield __________ __ Nov. 12, 1889
2. The heater of claim 1 wherein said fuel burner com
Sugg ________________ __ June 13, 1893
prises a pair of rigidly transversely related branch sup
Mansfield et al ________ __ Mar. 24, 1903
ply pipes extending longitudinally -adjacent the opposite
side walls of said housing and said burner jets are ar 55
ranged in opposed transverse pairs extending upwardly
and longitudinally inwardly from said respective branch
supply pipes to provide upwardly and inwardly directed
jets of ilame intersectiing substantially along the longi
tudinal axis of said vortical swirl path.
3. A submersible heater for use in heating a coniined
Levy _______________ __ Nov. 26,
Heaps et al ___________ __ June 27,
Fletcher ____________ __ Apr. 18,
Moss ________________ __ Dec. 26,
Hansen ______________ __ June 16,
Great Britain _________ __ Nov. 3, 1930
Patent N0„ 3?()51‘ì 162
August 28y 1962
Harry J. Porter
It is hereby certified that error appears in the above numbered patë
ent requiring correction and that the said Letters Patent should read as
corrected below .
Column IV lines I6 and 17, for "While such water-weather"
read -- While such watering tanks are wholly setisîaortûl’y
during non-freezing weather -=-; line 43y for "reltaive"
Signed and sealed this 26th day of February 1963.
Attcsting Officer
Commissioner of Patents
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