Improvements in Vapour Burners for Heating Purposes.
Year: 1896

page_text: Date of Application, 1st Sept., 1896-Accepted, 24th Oct., 1896
COMPLETE SPECIFICATION.
Improvements in Vapour Burners for Heating Purposes.
I, HUGO KRETSCHMANN, of 37 Lindenstrasse, Berlin S.W. in the Empire of
Germany, Merchant, 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 heating burner comprising a gasification
chamber, for converting the liquid fuel into gas, and a mixing and superheating
chamber arranged either above or below the gasification chamber and serving to
form the mixture of gas and air.
The heating burner forming the subject of this invention is reprosented (by way
of example) in the accompanying drawing, in which
Figure 1 is a vertical section of the improved burner.
Figure 2 is a similar view of a modified form of burner and
Figure 3 is a horizontal section thereof.
The said burner comprises a chamber a for gasifying the fluid combustible
(or hydrocarbon), such as petroleum, and another chamber, b, which may be
located either above the sail chamber a, as shown in Figure 1, or below such
chamber, as shown in Figure 2, and into which the gas and air are conducted, to
be mixed and superheated therein. The combustible liquid rises through the
branches of the feed or supply pipe c and enters the gasification chamber a,
where it is converted into gas and whence-in the form of gas-it descends through
the piped into a central jet-pipe or nozzle e, from which it issues in the condition
of a vertical jet of gas. This jet of gas, in its ascent, meets, and rushes into, a
vertical length of tube f, and, in so doing, carries air along into the latter, from
the sides, as indicated by the arrows. The tube f, through small lateral per-
forations, such as f', communicates with the mixing and superheating chamber b
at the top; the arrangement being the same whether such chamber is situate
above-as in Figure 1 or below-as in Figure 2. In the former case (Figure 1),
however, the tube extends right through the gasification chamber a.
As the jet or current, formed of the mixture of gas and air, comes up to the
upper end of the tube f, impinges against the top-wall or surface of the same and
passes into the chamber 6 through the small apertures f', a thorough mixturo of
the gas and air takes place; which mixture is further assisted, and brought to
perfection, by the gyratory currents occurring in the chamber b.
Near the bottom of the chamber b, a series of perforations & are provided all
around the same, for the mixture to pass off into the Hame g; and in order to
impart a practically upright direction to such flame, a small guiding cup his
arranged at the foot or base of the same, whereby the currents or jets of mixture,
as they become ignited, are deflected upwardly. Inasmuch as the flame forins in
the lower part of the chamber b, it envelopes such chamber from top to bottom,
and, consequently, heats it by direct contact. Where the arrangement is carried
out in the form shown in Figure 1, the gasification chamber a, placed underneath,
is heated through the medium of suitable heat-conducting or transmitting devices;
aud where the arrangement illustrated in Figure 2 is adopted, the flame surrounds
both the mixing and gasifying chamber, covering their outer surfaces throughout
the entire height of each; so that, in this case also, the direct hoating of the
gasifying chamber is ensured. The effect of the insertion of the mixture-chamber
into the path of the combustible gas is to regulate and temper the intensity of the
currents, so that a uniform, steady and silent Hame is obtained.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:-
1. A heating burner, the main feature of which is that, above or below a
gasification chamber, such as a,-wherein the liquid fuel is converted into gas,-
there is arranged a chamber, such as b, wherein the gas and air mix and are super-
heated; from which last-mentioned chamber there descends a length of tube, such
as f, the object of which is to receive the gas-jet or current, supplied from the
gasification chamber a, together with the air carried along by such current or jet,
and to yield up both the gas and air,-through lateral apertures, such as ', at the
top, into the mixing and superheating chamber b; the mixture being adapted
eventually to issue, in the shape of an annular flame, on all sides of the lower part
of the mixing chamber; such flame serving to heat both the mixture chamber and
the gasification chamber.
2. A heating burner, substantially as hereinabove described and illustrated in
the accompanying drawing.
Dated this 1st day of Sentember 1896.
HASELTINE, LAKE & Co.,
45 Southampton Buildinge, London, W.C., Agents for the Applicant.