Improvements in Heating Apparatus.
Year: 1893

page_text: Date of Application, 23rd Jan., 1893-Accepted, 4th Mar., 1893
COMPLETE SPECIFICATION.
Improvements in Heating Apparatus.
I WILHELM HENNEBERG, Engineer, of Königstrasse 8, Hamburg in the
Empire of Germany 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.
For obtaining the highest possible heating effect in heating apparatus such as
evaporators, feed water heaters, condensers etc with the smallest possible dimensions
of apparatus it is necessary that the heat producing medium be moved during the
operation with the greatest possible speed. To obtain this object the following
improved construction is employed as described and shown in the annexed
drawings.
In one wall of the vessel a whose contents are to be heated, a series of heating
elements bis inserted, these elements each formed of a circuitously bent pipe
fill up the vessel as completely as is practicable and are combined in groups or left
single so that the different elements are traversed by the heating medium
successively. The heating elements 6 61 63 may be of any suitable form in plan,
but each element is such, that all its windings lie in one and the same plane, while
the form of cross-section of the heating pipes, composing the elements, may be
round, oval or of any other suitable shape. The passing of the heating medium
from one element or from one group formed by different elements to the next
element or group of elements is effected by an arrangement of chambers, which
communicate each with each only by way of the pipe-elements, the first and the last
chamber of the series being provided with the respective orifices for entrance and
exit of the heating medium.
Fig. 1 to 3 of the annexed drawings represent a system of elements of the nature
described.
Fig. 1 and 2 are an elevational section and ground plan respectively, showing in
section the vessel a with its different pipe elements 6 6 6 etc.
Fig. 3 is a cross-section through those chambers; not visible in Fig. 1.
The heating medium enters at o in the chamber t, passes through the element b
to the chamber d (see Fig. 3), whence it returns through the element 61 to the
chamber t; thence through the element * to the chamber d' (Fig. 3) and so on
till it leaves the last chamber o³ at o¹.
A modified construction is shown in Fig. 4 to 6, in which Fig. 4 and 5 illustrate
respectively in elevation and plan sections of a vessel a, while Fig. 6 represents a
cross section through those chambers not visible in Fig. 4. The heating medium
entering at o passes from the chamber t at the same time through three
elements b bb, into the chamber d, thence through the two elements 6*6* into the
chamber t¹ and thence through the last element 6' into the chamber d', out of which
it passes at o'.
This latter arrangement differs from that shown in Figs. 1 to 3 therein that more
elements are connected to the several chambers.
An arrangement similar to that in Fig. 4 to 6 is shown in Fig. 7 to 9.
Figs. 7 & 8 are elevation and plan in section and
Fig. 9 represents a cross-section through the chambers not visible in Fig. 7.
The elements are here grouped throughout in groups of three.
Fig. 10 shows another form of winding the suitable pipe composing element each
differing from those shown in Fig. 2, 5 and 8.

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is.
In a heating-apparatus, designed for the heating of a fluid by means of a heating
medium, passed through a system of pipes; the construction, whereby the said
pipes are composed of several elements, each consisting of a pipe suitably bent to
occupy a convenient extent in a plane, the said elements being connected at their
ends singly or in groups each to two end chambers connecting each element or
group to the next element or group in series substantially as set forth.
Dated this 23rd day of January 1893
R. HADDAN,
Herbert Haddan & Co.,
18, Buckingham Street, Strand, London, Agent for Applicant.