close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2131215

код для вставки
Sept. 27, 1938.
H, J_ BIVORT
2,131,215
GLASS TANK FURNACE
Filed larch 20, 1936
\NVENTOR
HENRI JACQUES BIVORT
BY
ATTORNEY
Patented Sept. 27, 1938
2,131,215
UNITED STATES PATENT OFFICE
2,131,215
GLASS TANK FURNACE .
Henri Jacques Blvort, Brussels, Belgium
Application March‘ 20, 1936, Serial No. 69,962
In Belgium March 22, 1935
3 Claims.
The present invention relates to a glass tank
furnace comprising above the glass electric re
sistances intended for the heating thereof by
radiation.
In tank furnaces of this nature, the electric
resistances are arranged at a certain distance
from the roof and are located in the direction of
the width of‘ the furnace.
These resistances are generally supported by
10 the longitudinal walls of the furnace. In this
case, the furnace is of reduced width, since hither
to it has not been possible to make suitable resist
ances of greater length than 1.5 metres.
With the object of permitting the construc
15 tion of wider furnaces, it has been proposed to
use a number of resistances arranged end to end
in the transverse direction, the extremities of
these resistances being inserted in bricks forming
a projection with respect to the roof of the fur
20 nace. ‘This solution has in practice not given sat
isfaction because the projecting portions of the
said bricks rapidly deteriorated. ‘This rapid de
terioration has not permitted the use of resist
ances end to end, and it has thus been necessary
25 to be satis?ed with using a single resistance and
consequently furnaces of small width.
The present invention has for its object to per
mit the use of furnaces of large dimensions both
in width as well as in length.
30
To this end, the electric resistances which heat
the glass by radiation are arranged in cavities
of the roof, preferably in a detachable manner.
According to an advantageous method of carry
ing out the invention the electric resistances are
35 arranged in the direction of the axis of the fur
nace.
Other peculiarities and details of the invention
(Cl. 13-—6)
longitudinal direction of the furnace. They are
grouped in transverse rows in cavities 5 of the
roof. The extremities la of these resistances
rest on ledges 6a of parts 6 of the roof. They
are surmounted by walls 1 which support other Oi
parts 8 of the roof at a certain distance from the
parts 6 on which the resistances rest. The roof
parts 8 are independent of the roof parts 6.
They may be easily removed for example by the
10
fact of their being suspended by cables 9.
To replace a damaged resistance, it is only
necessary to lift the part 8 of the roof which
surmounts it and to remove the walls ‘I. If
necessary the resistances 4 may be mounted in
the walls ‘I and be lifted out at the same time
as the latter. The roof parts 6 may also be
suspended by cables Hi. The different parts 6
and 8 of the roof 8 may be kept in contact one
with the other by suitable devices such as struts.
The arrangement of the electric heating resist
ances I in the cavities 5 of the roof protects these
resistances from the currents which circulate
between the glass 3 and the roof. Furthermore,
the arrangement of the resistances in the longi
tudinal direction of the furnace and their group 25
ing in transverse rows have for effect to diminish
the surface of the refractory bricks of the roof
which are in the immediate vicinity of these
resistances. Actually, only the lateral surfaces
of the ledges 6a are subjected to an intense radia
tion on the part of the resistances 4. Further
more, the roofs may be constructed more easily
in the direction of the width of the furnace than
in the direction of the length on account of their
smaller dimension in this direction. The resist
ances, whilst not being of excessive length, per
mit the construction of furnaces of very large
will be shown in the course of the description of
dimensions both in width as well as in length.
the drawing annexed to the present speci?cation
40 and which represents diagrammatically and by
The use of resistances of normal length is, fur
thermore, of advantage since the risk of sagging
way of example, one method of carrying out the
invention.
Figure 1 is a longitudinal section on the line
I-I of Figures 2 ‘and 3, of a portion of a tank
of these resistances is less than in the case of
45 furnace for glass according to the invention.‘
Figure 2 is a cross-section of this furnace on
the line II—II of Figures 1 and 3.
Figure 3 is a plan view of a portion of this
furnace.
50
In these different figures, the same reference
signs indicate the same elements.
There is shown thereon a tank furnace 2 con
taining a certain quantity of glass 3, which is
heated by radiation by means of electric resist
55 ancos 4. These resistances are arranged in the
longer resistances.
The grouping of the resistances in transverse
rows easily permits the heating of the mass of
glass according to the part of the furnace where
it is located. The detachable mounting of the
resistances permits of their removal and their
replacement according to the requirements at the
moment without stopping the heating or the
manufacture. The electric heating resistances
for the glass could also be arranged perpendicu
larly to the axis of the furnace.
It is evident that the invention is not exclusively
restricted to the embodiment shown and that
many modi?cations may be made in the form.
2
2,181,915
arrangement and constitution of the elements
used in its embodiment without departing from
the scope of the present invention.
What I claim is:
in
'
1. A glass tank furnace, comprising a roof, rows
of adjacent blocks forming part of said roof dis
posed at a certain distance from each other so as
to form cavities between them at the lower face
of the roof, ledges on said blocks projecting into
10 said cavities, electric resistances resting on said
ledges, a'block above each resistance independent
of the blocks on which the corresponding resist
ance rests, and suspension means for independ~
ently removing each of the blocks above the
resistances.
2. A glass tank furnace, comprising a roof,
rows of adjacent blocks forming part of this roof
disposed at a certain distance from each other
so as to form cavities between them at the lower
20 face of the roof in a transverse direction rela
tively to the longitudinal axis of the furnace,
ledges on said blocks projecting in said cavities.
electric resistances resting on said ledges, a block
above each resistance independent of the blocks
on which the corresponding resistance rests, and
suspension means for independently removing
each of the blocks above the resistances. ‘
3. A glass tank furnace, comprising a roof,
rows of adjacent blocks forming‘part of said root
disposed at a certain distance from each other so
as to form cavities between them at the lower face 10
of the roof, ledges on said blocks projecting in
said cavities, electric resistances resting on said
ledges, a pair of vertical walls resting on said
ledges above the extremities of each ‘electric re
sistance, a block resting on each pair of vertical
walls independent of the blocks on which the cor
responding resistance rests, and suspension means
for independently removing each‘ 01' the blocks
above the resistances.
20
HENRI JACQUES BIVORT.
Документ
Категория
Без категории
Просмотров
0
Размер файла
222 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа