US1672252A - Attachment for boilers - Google Patents

Description

L nf. gw A .0 W

June 5, 1928.

R. E. GRVEY ATTACHMENT'FOR BOILERS Filed July 28, 1926 f elevation'.

yinputted James, loza y -of the'invention "adapted to -vent radiation therefrom before the flue line 3-3of Figure 1, and, l

mit the ilues ofthe furnape usual damper 15.

f UNITED STATE Y narxonn r. calm, or treinen,

arracnm'r' application lied Ialy 88,

This invention relates to heating systems and more particularly to anattachment for boilers. 4

Broadly speaking it is an important obJect to provide means for utilizing the heat of the products ofcombustionl and flue gases for Aheating the boiler and to utilize the products` of combustion and flue gases for preventing" radiation of heat from the-boiler.

A further object is to provide a casing esurround a portion of a'boiler` and provided with passages through which the products of combustion and flue gases are adapted to dow in contact with Vthe boiler. before passin out through th stack.

A further o ject is to provide a heat insu lating casing surrounding'l ai portion of a boiler and provided at its sides with relatively narrow deep passages for the flue gases whereby the latter are held in close roxi'mty to the boiler to heat the latter an pregases ass to the stack. A rther object is to provide a-device of the above mentioned character rovided with suitable dempers for contro the passage of the gases.v Other objects and advantages'of the invention will become apparent during the course of the following description.

In the drawings I have shown one embodiment of the invention.'- In this showing: Fi 're 1 is a sideelevation of a boiler *showing the deviceapplied, parts being broken away,

Filgure 2 's a.' section online 2-2 of F ig ure i Figure' 3 is a section taken on 'Figure 4 is a hmm une 4 4 of. Figure 1, the 'furnace Referring to t 'e numeral 10 d ates an ordinary ly oft e oi or-gasburnin'g furnace is provi ed" its front end with ja 13 of the usual type 'also are proridedtn i tn be The furnace is provided with a ta orout-Y iecpipe 14 sdapdube by Innerand outer A `16 anilllA surround `the top, sidesand fur-3 -the casing toda Vthe stack the space between the plates '25 and26, reap' Dampers.v 31* of dampers are 'adapted pitdoor12.

ron.' nomina im. semi n. uam

shown' .in Figures 2 and 4. The ca sings 16 and 17 form in effect a single'casing having parallel walls slightly spaced, and t i may be utilized either `as a dead air space or may as indicated at 18. The .forward end of s space l be iilledwith Vheat insulating mater'l casing is provided with an inward-ly extending .wall 19 snugly fitting against the sides of the.furnace adjacent the front -thereof whereby the latter isaccessible in the usual manner for firing the boiler'oi' furnace. At

the sides of the furnace a relatively narrow passage 19 is provided'inwardly of the casing, and this passage extends throu hout the height of the furnace. Rearward y of the furnace. a relatively deep space 20- is provided. This space communicates with an outlet pipe 21 closed at its'outer end by a cap 22. A branch pipe 23 connects the pipes 21 and 14 and may be controlled by a suitable dam r24.

(Inwar ly of the casing, a'hor'izontal plate Y25 surrounds the 'furnace adjacent the' top thereof, and below the plate 25 another plate o'r partition 26 extends from the reartend of w'ard end thereof as indicated at 27 whereby the passage 19" is divided into vpassagesor for a purpose to be described. v As shown in Figure 3; the plates 25' and 26 ilues 28'and 29 extend from the back of thefurnaceto the back wall of the casing.

Y Means are provided for permitting the flue gases to pass into the passa 28 instead of passing directly tothestac For this branch pipes 30 areconnected 14 and extend into opposite vsides of wardly of the furnace.

through c ontroal0 thei Y e Il t by haliridl 'or 32.' i

' wn in igure 2 e p tends from plate 23th the floor line,

clean-out o" nings 33 Aare provided in the casing and adapted-'to be closed by covers 34.

point spaced vfrom the'for.-

with

Y' The operation o'f the `device is 'as follows; Y'

As previously stated,; the attachment is particularly .adapted .for use in connect-ion with heating f plants employing oil orf'gas -burning equi nient but" is necessarily the as su operation,

use. When furnace is in the. damper 15 may closed,'and the `daxnpersl opened. The' products of combustion will flow the pipes 8 0 to thewwrtiensvfthemmd 5 downwardly into the lower passage 29, to

the .rear portionof the passage 29, and,

as will vbe obvious.

thence forwardly through the sides of these passages as indicated by the-arrows in Fig- , ures 2 and 3. When the forward end 27 of .the partition 26 is reached, the gases flow thence to the stack through pipes 21 and 23,

it being understood that the damper 24 is4 sistance thereto, whereby the tire may be'` forced in the usual manner when the damper 24'is opened to permit complete combustion to take place; It will be obvious however, that the dampers 3 1 may be closed and the damper` 15 opened to permit the furnace to be operated in the usual manner. Accumulations of solid matter may be removed from the casing by removing the covers34 From the foregoing it .Will be apparent-that the presence of the gases in proximity to the -furnace ytends to prevent the ra/diation of heat therefrom.

while the heat of the products of combustion, which is ordinarily wasted is employed to assist in heating the water in the boiler. Radiation of heat also is minimized owing to the use of the insulating material 18, but it has been found that thev provisionA of a dead airspace between the inner and' puter casings also 'provides excellent results in'this connection. Y' lIt is to be understood that the form of the invention herewith shown Iand described is to be taken as a preferred example of the same and that various changes in the shape, size and arrangementof parts may be resorted to without departing from the spirit of 'the invention or the scope of the subjoined claim.

I claim: l The combination with a boiler having an outlet opening and a flue, of a casing surrounding a portion of the boiler and provided with a passage arranged in proximity to a portion of the boiler, branch conduits connecting said outlet with one end of said passage at opposite sides of said boiler, the opposite end of said passage being connected tol said flue, and dam'pers in each of said branch conduits for selectively regulating the flow of gases to each side of said boiler. I0.

` In testimony whereof Isaflix my signature.

RAYMOND E. GARVEY.

Images