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Патент USA US2119118

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May 31, 1938.
Original Filed June 17, 1956
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Patented May 31, 1938
John H. Sengstaken, Plandome, N. Y., assignor to
The Superheater Company, New York, N. Y.
‘Original application June .17, .1936, Serial No.
85,670. Patent No. 2,088,931, dated August 3,
1937. Divided and this application December
22, 1936, Serial No. 117,127
is Claims.
Thisinvention relates to heat transfer appara
tus and particularly to means for supporting the
tubular heat absorbing elements thereof. The
inventionwill be described by way of illustration
as embodied in an “economizer” having tubes
through which boiler feedwater is circulated to
absorb heat from the boiler gases.
The present application is a division of my co
pending application, Serial No. 85,670, ?led June
10 1'7, 1936, now Patent No. 2,088,931, issued on
August 3, 1937, in which I have disclosed and
claimed arrangements for relieving the econo
mizer headers of substantially all the strain
usually imposed thereon by the weight of the
15 tubes and for also permitting easy removal of
some of the tubes for replacement or repairs with
out disturbing the supporting means for other
A feature of the invention resides in novel and
20 improved means for supporting the economizer
in a gas path of a boiler. Other features’ and
advantages of the invention will become apparent
upon consideration of the following detailed de
scription and appended claims when read in con
25 junction with the accompanying drawing in
Fig. 1 is a. diagrammatic view illustrating the
mounting of the economizer in a boiler, some
parts being omitted for simplicity of illustration;
(01. 122-510)
manner, and near their mid-points‘ also if ,de
sired. Several series of beams 32, 33, 34 that ex
tend transversely of the economizer between the
sections of the elements l2 are aligned with and
support the plates 30, associated with corre- - 5
sponding sections of all the elements. The plates
30 associated with the component tubes of the
lowest sections 24 in all the elements rest upon a
similar series of beams extending beneath the
lowermost sections.
Correspondingly positioned 10
beams, near the ends and mid-points of the tubes,
are in vertical alignment and rest upon collars
or nuts 40 on rods 42 extending through the
beams and suspended from saddle members 46
mounted on the steam and water drum 48 of the 15
boiler. - Thus, the economizer is suspended from
the steam drum of the boiler and located in a gas
passage communicating with the off-take thereof.
The supporting rods 42 which interconnect the
several series of beams 32, 33, 34 are located be- 20
tween downcomer tubes 44 connecting the steam
drum with the water drum 5!! and lining the walls
of the off-take so that the suspension rods are
protected against high temperature conditions in
the gas passage.
The plates 30 which interconnect the compo
nent tubes of each section of an element l2 near
the ends are in abutment at their side edges and
being located between the beams 34 complement
the latter to form end walls for the gas path 30‘
through the economizer. The plates 30 connected
to the mid-points of the tubes may likewise be
arranged to form a ba?le dividing the gas passage.
Referring to the drawing, the economizer com- ‘
It will be seen that since the component tubes
5 prises an open-ended casing In which contains a of each corresponding section of each element are 35
plurality of sinuous tubular heat absorbing ele
connected to plates 30 and the plates for corre
ments l2, one of which appears in side elevation sponding sections of all the elements are sup
in Fig. 2. The elements l2 are disposed in side by ported upon a common series of beams extend
side relation and exposed to boiler gases that ?ow ing transversely therebeneath, any section of any
40 through the casing for heating feed water or element may readily be removed from the econo- 40
other ?uid circulated through the elements be
mizer for repair or replacement by disconnecting
Fig. 2 is a vertical sectional view showing the
construction of the economizer; and
Fig. 3 is a fragmentary perspective view of a
portion of the economizer.
tween the inlet and outlet headers 14 and 16 re
spectively. Each element comprises a number of
superposed tubes l8 interconnected by return
‘15 bends to form a continuous and sinuous tubular
element and, as illustrated in the drawing, con
sists'of several sections 2!, 22, 23, 24 and the re
turn bends or couplings 2!}, connecting the lower
tube 25 of one section of the upper tube 26 of the
adjacent sections, are disconnectable from these
tubes. Likewise the end tubes 21 of each element
are disconnectable from the headers l4, l6.
Plates 39, individual to each section of each
element are secured near the ends of the com
ponent tubes of each section in any convenient
the end tubes of a particular section from the
related couplings or return bends and, in the case
of the upper and lower sections, from the headers
l4, IS. The headers l4, 16 are relieved of the 45
weights of the tubes and the entire economizer
may readily be suspended from the boiler drum
5!] or a convenient portion. of the boiler frame
since the several sets of vertically aligned beams
34 are interconnected and supported by the 50
rods 42.
Although an illustrative embodiment of the in
vention has been shown in the drawing and de
scribed in detail herein, it is understood that there
are many changes and variations that may be 55
made without departing from the invention and
it is therefore intended to include all such changes
and variations within the scope of the appended
What I claim is:
1. In a boiler; a steam and water drum dis
posed above a gas passage leading to the boiler
off-take; a water drum therebelow; rows of down
comer tubes arranged along opposite walls of said
10 gas passage and connecting said drums; an
economizer positioned in said gas passage be
tween said rows of tubes; and members disposed
in spaces between adjacent tubes of said rows con
necting said economizer to a support thereabove
15 for suspending the economizer therefrom.
2. In a boiler; a steam and water drum dis
posed above a gas passage leading to the boiler
off-take; a water drum therebelow; rows of down
comer tubes arranged along opposite walls of
20 said gas passage and connecting said drums; an
economizer positioned in said gas passage below
said steam drum and located between said rows
of downcomer tubes; and members disposed in
spaces between adjacent tubes in said rows and
25 connected to said steam drum and economizer for
supporting the latter.
3. In a boiler; a steam and water drum dis¢
posed above a gas passage leading to the boiler
off -take; an economizer having a plurality of ?uid
circulating elements disposed in side by side rela
tion and each divided into a number of superim
posed sections which comprise sinuously con
nected parallel tubes, and detachable couplings
interconnecting the component sections of the
respective elements; a plurality of supporting 10
members extending transversely of said elements
between the sections thereof and below the lower
most sections thereof and supporting correspond
ing sections of all said elements so that upon dis
connection of any section of any element from 15
the related coupling said section may be removed
from the economizer while the other sections of
the same element remain supported by the trans
verse members associated therewith; saddle mem
bers mounted on said drum; and means connected 20
to said transverse supporting members and said
sadd1e members on said steam and water drum
for suspending the economizer from the latter.
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