Improvements in or in connection with Furnaces.
Year: 1896

page_text: Date of Application, 16th Dec., 1896
Complete Specification Left, 23rd Dec., 1896-Accepted, 13th Mar., 1897
PROVISIONAL SPECIFICATION.
Improvements in or in connection with Furnaces.
I, LUDWIG ADOLF JOHANN KRENZIEN, of Veddeler Brückenstrasse 4,
Hamburg, Superintending Machinist, do hereby declare the nature of this
invention to be as follows:-
This invention relates to apparatus for use in connection with furnaces for the
purpose of feeding the fire with a mixture of steam and air which serves to
increase the heat obtained from the fuel, and prevents or lessens the formation of
smoke.
The apparatus is, in the accompanying drawings, represented as applied to a
marine steam boiler.
Fig. 1 being a front elevation of the boiler the front plate being. removed.
Fig. 2 a side elevation thereof; and
Figs. 3, and 4 showing to a larger scale details of my improved apparatus.
In each furnace there is arranged on the fire-door frame, and above the opening,
a box a, of such shape as to fit the upper part of the furnace, and open towards
the rear. To the front of the box are connected air-pipes b and c and a steam
pipe d. The air-pipes bc pass to the upper part of the boiler and extend
backwards terminating in a funnel f. In this way air entering the funnel will
become heated on its road to the box a but if desired, for producing a still greater
preliminary heating of the air, the pipes b-c may be connected with a system of
specially heated pipes.
The steam-pipe d, which is provided with a stop-valve g, passes into the box a
and communicates with a pipe h, which is closed at the ends but is provided on its
rear side with a number of fine holes (see Figs. 3 and 4.) The arrangement is
such that steam issuing through these fine holes has a strong inducting action on
the air entering from the pipes b and c and mixes itself intimately with the same.
In consequence of the great velocity of the steam, this mixture is blown powerfully
into the fire that is burning on the grate where the oxygen and hydrogen contained
in the mixture is caused to combine with the burning fuel. The burning gases
produce a considerable rise of temperature, in consequence of which even the carbon
contained in the smoke-gases becomes burned. In this manner the heat derived
from the fuel is very considerably increased and the formation of smoke avoided..
Dated this 16th day of December 1896.
F. WISE HOWORTH,
46 Lincoln's Inn Fields, London, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or in connection with Furnaces.
I, LUDWIG ADOLF JOHANN KRENZIEN, of Veddeler Brückenstrasse 4,
Hamburg, Superintending Machinist, 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 apparatus for use in connection with furnaces for the
го

page_text: purpose of feeding the fire with a mixture of steam and air which serves to
increase the heat obtained from the fuel, and prevents or lessens the formation of
smoke.
The apparatus is, in the drawings filed with my Provisional Specification
represented as applied to a marine steam-boiler, .
Fig. 1 being a front elevation of the boiler the front plate being removed.
Fig. 2 a side elevation thereof; and
Figs. 3, and 4 showing to a larger scale details of my improved apparatus.
In each furnace there is arranged on the fire-door frame, and above the opening,
a box a, of such shape as to fit the upper part of the furnace, and open towards
the rear. To the front of the box are connected air-pipes b and c and a steam-
pipe d. The air-pipes 6-c pass to the upper part of the boiler and extend backwards
terminating in a funnel f. In this way air entering the funnel will become heated
on its road to the box a but if desired, for producing a still greater preliminary
heating of the air, the pipes b-c may be connected with a system of specially
heated pipes.
In
The steam-pipe d, which is provided with a stop-valve g, passes into the box a and
communicates with a pipe h, which is closed at the ends but is provided on its rear
side with a number of fine holes (see Figs. 3 and 4). The arrangement is such that
steam issuing through these fine holes has a strong inducting action on the air
entering from the pipes b and c and mixes itself intimately with the same.
consequence of the great velocity of the steam, this mixture is blown powerfully
into the fire that is burning on the grate where the oxygen and hydrogen contained
in the mixture is caused to combine with the burning fuel. The burning gases
produce a considerable rise of temperature, in consequence of which even the
carbon contained in the smoke-gases becomes burned. In this manner the heat
derived from the fuel is very considerably increased and the formation of smoke
avoided.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed 1 declare that what
I claim is :-
1. Apparatus for use in connection with a furnace for the purpose of feeding
the fire with a mixture of steam and air which serves to increase the heat obtained
from the fuel, and prevents or lessens the formation of smoke, comprising a box (a)
open at the rear, adapted to be placed over the fire-door opening, and connected
with air-passages (bc), and a perforated pipe (h), which is arranged within the
said passage, is likewise open only at the rear, and is in communication with a steam
pipe (d) substantially as described.
2. My improved apparatus for use in connection with furnaces, substantially as
hereinbefore described and shown in the drawings.
F. WISE HOWORTH,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.