Improvements in Hot-water Heating Apparatus.
Year: 1899

page_text: Date of Application, 13th July, 1899-Accepted, 19th Aug., 1899
COMPLETE SPECIFICATION.
Improvements in Hot-water Heating Apparatus.
I, ANDERS BORCH RECK, of Gothersgade 155, Copenhagen, in the Kingdom of
Denmark, Captain, do hereby declare the nature of this invention and in what
manner the same is to performed to be particularly described and ascertained
in and by the following statement:
-
In hot water heating apparatus in which an increased speed of circulation is
produced by generation of steam in the rising pipe near its top, it is of importance
to regain the heat given out by the condensation of this steam and utilise it
for heating the circulating water. This is attained by employing the cooled
water returning from the radiators for condensing the steam so that this water
absorbs most of the heat given out by the steam.
Figs. 1 and 2 of the accompanying drawings illustrate arrangements for this
purpose when steam is used to effect generation of steam in the rising water
pipe, and Fig. 3 illustrates an arrangement in which the said generation of
steam in the water pipe is produced by heat from a fire.
In Fig. 1s is a pipe conducting steam to a heater H, from which a pipe M
leads to a separator S and from S the pipe N¹ leads to radiators while the pipe N
brings the water back.
An overflow pipe f leads to a surface condenser C through which the pipe N
passes.
For use, the whole apparatus is charged with water, until the water in the
separator is level with the overflow pipe f. When steam is then supplied to the
heater H the water is heated and begins to circulate through the apparatus. The
circulation, however, only operates properly when the water is heated to such a
degree that steam is generated in the rising tube M above the heater H, this
steam becoming disengaged in the separator S,, and passing by the pipe f to
the surface-condenser C where it is condensed, giving its heat to the return-
water in the pipe N. The surface-condenser C may be variously constructed,
but must always consist of two chambers separated by metal walls, the water
passing through one of the chambers, while the steam is condensed in the other.
In the drawing is shewn an automatic discharger for the water of condensation,
but this may also be arranged in any known manner and forms no part of this
invention.
In Fig. 3 there is no steam pipes and for the heater is substituted a boiler A
with fire-place B. The steam generated in the rising tube M is condensed
before the water passes to the radiators by the pipe N¹ a condenser T being
inserted between the rising tube M and the hot water pipe N¹. In this con-
denser the heat of the steam is transferred to the return water so that this
returns to the boiler in a heated' condition. The arrangement of separator
and surface-condenser C shewn in Fig. 1 may also be employed when the heat-
ing is effected by a boiler but in such a case the boiler must be provided with
means of feeding to compensate for the condensing water discharged. The
condenser shewn in Fig. 3 may also be employed in heating by steam as shewn
in Fig. 2. In apparatus where a condenser but no separator is employed, an

page_text: expansion vessel E must be provided with an overflow pipe f for instance as
shewn in Fig. 2 and indicated by dotted lines in Fig. 3. In the drawings no
radiators are shewn as they may be of any known kind.
The apparatus should be provided with arrangements for regulating, and pre-
venting excessive heating, but as these arrangements form no part of the
invention they are not shewn.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I declare that what I claim
is ::
1. In circulators for hot-water heating plants in which steam is generated in
the rising water pipe in order to increase the speed of circulation, the arrange-
ment of a condenser in which the steam so generated is condensed giving its heat
to the water returning from the radiators.
2. In steam circulators for hot water heating apparatus the combination of a
heater H, a rising pipe M, and a separator S with a surface-condenser C, in the
course of the return pipe, for utilising the heat given out by the condensation
of the steam generated in the rising pipe and separated in the separator.
3. The combination of a heater H, a rising-pipe M, a condenser T which is
placed at the top of the rising-pipe and through which the return pipe N passes
for utilising the heat given off by the condensation of the steam generated in
the rising pipe.
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100
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1000