Improved Submerged Heater.
Year: 1899

page_text: Date of Application, 23rd Jan., 1899-Accepted, 25th Feb., 1899
Improved Submerged Heater.
We, EDWARD JOSEPH BYRNE, 611, North Calvert Street, in the City of Baltimore,
State of Maryland, and United States of America, Inventor, and CLARENCE MAY
KEMP, 1501, Guilford Avenue, in the City of Baltimore, State of Maryland, and
United States of America, Manufacturer do hereby declare the nature of this
invention, and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
This invention relates to an improved submerged heater. Among the objects
of the invention are: to provide à heater that will quickly and efficiently heat
the water, or other liquid, in which it may be submerged; to provide a vertical
duct with a down draft, by which the air and gas will thoroughly commingle
before entering the burner; to provide a distributing chamber or burner, located
within a combustion chamber, said burner having a plural number of gas outlets
in close proximity to each other, whereby should one or more of the jets of flame
be extinguished the same will be ignited by the flame issuing from the remaining
jets; to provide the combustion chamber with ducts to cause a circuity of the
heat and flame in the said combustion chamber, so as to apply the heat to all
the surfaces with which the water, or other liquid, may come in contact; to
provide a damper to cut off direct communication between the combustion chamber
and the exit duct after the gas has been ignited; and to provide the mixing duct
with means to close the air-inlet thereto to prevent the gas from taking a back-
ward course in the said duct before the proper circuit has been established.
The invention further consists in the novel combination of elements, and.in the
construction and arrangement of parts, which will be hereinafter fully described
and claimed.
The invention is illustrated in the accompanying drawing, in which-
Figure 1 is a view of the heater submerged in water, and shows the connections
thereto.
Figure 2 is a vertical sectional view taken through the air ducts.
Figure 3 is a horizontal sectional view on the plane indicated by the dotted
line 33, of Figure 2.
Similar letters of reference are employed to denote corresponding parts at each
of the figures, respectively.
I designates the casing forming the combustion chamber; 2, the air inlet duct
for the admission of air to the combustion chamber; and 3, the exit duct through
which the residue of combustion is carried off. Both of the said ducts, 2, 3, open
into or communicate with, the combustion chamber. The said parts being con-
structed of sheet metal.
The casing 1, forming the combustion chamber, in this instance, is made circular,
but the same may be of any preferred shape. The interior of the casing, 1, is
divided or constructed to secure a circuitous circulation of the hot air therein,
so as to apply the heat to all the surfaces with which the water, or other liquid,
may come in contact. In this instance, the means for dividing the said combus-

page_text: tion chamber, consists in the employment of a curved partition or deflector, 4,
and two straight partitions, 5, and 6, which are arranged within the combustion
chamber and form the ducts, as indicated in Figure 3. These partitions or
deflectors, 5, and, 6, being joined to the curved partition, 4, by transverse ribs, 8,
integral with the said partitions. The curved partition, 4, is arranged substan-
tially concentric to, or parallel with, the vertical wall of the casing, 1, so as to
form between the partition and said wall a duct, 10. The straight partitions, 5,
and, extend from the annular wall of the casing, 1, into the space enclosed
within the curved partition, 4, whereby a central space, 11, is formed between
the partitions, 5 and 6; and the reverse ducts, 12 and 13, are formed between the
partition, 4, and the partitions, 5 and 6. The burner, hereinafter described, is
located in the central space, 11, and the flame and heat passes through the ducts 12
and 13, into the duct 10, to the exit duct, 3, and thence to the atmosphere. The
described construction of the partitions or deflectors serves to divide the interior
of the casing into ducts through which the heat is compelled to travel in a course
that will secure the distribution of the heat to the best advantage and to effect
its application to the walls of the casing, 1, throughout the entire area thereof.
The exit duct, 3, communicates with the combustion chamber and is provided
with a damper, 7, by means of which a direct draft between the combustion
chamber and exit duct is established by raising the said damper, 7, or is cut off
by lowering the same, which governs the opening, 18, formed directly opposite
the burner, 16. The damper is provided with a rod, 20, by which it is operated.
The upper extremity of the rod, 20, is bent laterally and projects through the
vertical slot, 21, in the exit duct; the said bent portion forming a handle by
means of which the damper is actuated. The vertical slot, 21, at the top is pro-
vided with an off-set which serves to hold the damper in the raised position when
the handle is inserted therein.
The air-inlet duct, 2, communicates with the combustion chamber and supplies
air thereto directly from the atmosphere. In this inlet duct, 2, is arranged a
vertical mixing duct, 9, the upper portion of which is provided with means to be
attached to the gas supply pipe, 14, the gas therefrom being supplied through
the passage, 19. Near its top the mixing duct is also provided with openings, 15,
through which the atmosphere is admitted to the said duct; the atmosphere
commingling and thoroughly mixing with the gas as it. is drawn down through
the vertical duct, 9, to the distributing chamber or burner, 16. The mixing
duct, 9, is provided on the outside with a sleeve, 23, which is movable up and
down to close the openings, 15, to prevent the gas from taking a backward course
before the proper circuit is established. The sleeve, 23, is operated by means of
the rod, 25, which projects upward above the air-inlet duct, 2.
Attached to the lower end of the mixing duct, 9, and located within the com-
bustion chamber, is a distributing chamber or burner, 16, having a plural number
of gas outlets, 17, in close proximity to each other, whereby should one or more
of the jets of flame be extinguished, the same will be lighted by the flame issuing
from the remaining jets. Furthermore the plurality of jets affords means of
separating the flame, whereby the latter is distributed over a greater surface and
thereby affording a proper distribution of the same.
The admission of air from the duet, 2, to the central space, 11, is obtained above
the burner, 16, and the downward flow of air upon the burner tends to deflect the
heat toward the bottom of the casing, 1, whereby the heat is applied against
the bottom, as well as against the walls and top of the casing; thus a uniform
heating of all parts of the casing is secured and enables the structure to heat the
water quickly and with less consumption of fuel.
The heater is also provided with a base, 22, connected to the bottom of the
casing in such a manner as to leave a space, 26, between the said bottom and base,
thereby enabling the water to obtain access to the casing on all sides thereof.
This base is made heavy enough to keep the heater submerged in the water against
the tendency to rise therein owing to the buoyancy of the structure.

page_text: The heater is also provided with a handle, 24, attached to the ducts, 2, and, 3,
to serve as a means for readily lifting the heater out of the water, or putting it
in the same.
This handle also serves as a stay for holding the said ducts in the
proper relative position. The said handle may be made of any suitable material
or of any preferred shape.
The operation of the device is as follows:-
The heater is first submerged in the water and connection made with the gas
supply, see Figure 1; the sleeve, 23, is then raised closing the openings, 15, to
prevent a back-draft in the mixing duct, 9, and distributing chamber or burner, 16,
when the gas is first ignited. The damper, 7, is then raised by which direct
communication is established between the combustion chamber and the exit
duct, 3. A lighted taper is then placed in the combustion chamber by being.
passed through the exit duct, 3, and opening 18. The gas is then turned on at
the key, 27, which is instantly ignited in the combustion chamber. The damper, 7,
being open the flame immediately passes up the exit duct, 3, to the atmosphere,
thereby establishing the circuit in the proper direction. The sleeve, 23, is then
lowered opening the slots, 15, and thereby admitting atmosphere to the mixing
duct, 9, wherein it thoroughly commingles and mixes with the gas passing therein
owing to the vertical position and down course of the draft; from thence the
mixed air and gas passes to the distributing chamber or burner, 16, through the
outlets, 17, to the combustion chamber, where it is ignited, forming perfect com-
bustion. The circuit having been established in the proper direction and the
flame reduced to a proper combustion, the damper, 7, is closed cutting off direct
communication between the combustion chamber and exit duct, 3; the flame and
heat then takes the circuitous route through the ducts, 12, and, 13, and, 10, then
to the exit duct, 3. In making this circuitous circulation the flame and heat is
applied to all portions of the submerged parts, thereby distributing the heat to
the water in the most effectual and thorough manner, heating the water in a
short time to the desired temperature. After the water has been heated to the
desired temperature, the damper, 7, may be opened to permit the greater portion
of the heat to pass through the exit duct, 3, and escape from the heater into the
room for the purpose of warming the latter. After the water and room have been
sufficiently heated the gas is turned off and the heater removed from the water.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:
1. In a submerged heater, the combination of a casing forming a combustion
chamber; a distributing chamber or burner located within said combustion
chamber a vertical mixing duct; an air-inlet duct; and an exit duct to carry
off the residue of combustion.
2. In a submerged heater, the combination of a casing forming a combustion
chamber; a burner to deliver the gases to the said combustion chamber; a mixing
duct; an air-inlet duct; an exit duct to carry off the residue of combustion; and
a damper arranged to cut off direct communication between the combustion
chamber and the exit duct.
3. In a submerged heater, the combination of a casing forming a combustion
chamber; a burner located within said combustion chamber; an air-inlet duct;
an exit duct to carry off the residue of combustion; a mixing duct having an
opening at the top; and means to open and close the air-inlet to the mixing duct.
4. In a submerged heater, the combination of a casing forming a combustion
chamber; a burner located within said combustion chamber; an air-inlet duct;
an exit duct provided with a damper; a mixing duct having an opening at the
top; and means to open and close the air-inlet to the mixing duct.
5. In a submerged heater, the combination of a casing forming a combustion
chamber; a burner arranged to deliver the gases to the said combustion chamber;
a mixing duct; an air-inlet duct; an exit duct; a damper arranged to cut off

page_text: direct communication between the combustion chamber and the exit duct; and
circuitous ducts arranged to distribute the heat within the combustion chamber.
6. In a submerged heater, the combination of a casing forming a combustion
chamber; a burner located within said combustion chamber; a mixing duct; an
air-inlet duct; an exit duct; two straight partitions--one on each side of the
burner; and a curved partition concentric to, or parallel with, the vertical wall
of the casing.
7. In a submerged heater, the combination of a casing forming a combustion
chamber; a distributing chamber or burner located within the said combustion
chamber a mixing duct; an air-inlet duct; an exit duct to carry off the residue
of combustion; and a base connected to the bottom of the casing and leaving a
space between the casing and base.
T: 09.1 dan of TanName 1200
ALLISON BROS.,
Agents for the Applicants.