DE1778880A1 - Boilers for burning liquid or gaseous fuels - Google Patents

Description

KESSEL 2DM VERBREMEH YOK PLUSH ODEB GASEOUS BRAKE PLUG

Present 'invention relates to © inen boiler firing ein® fairy sitting in _t wel more liquid or gaseous fuels are burned can. The liquid to be heated consists essentially of water and the. Product obtained may be water or steam to be * is known, has long been a need for boilers "the increased specific heat exchange (d.lu sine QCd3Bsre exchanged heat quantity per square meter Rutzfl & before} at the same time with a enable good combustion conduction »

Others are the aspirations of modern times known ^ the dimensions of the boilers to Yerklolnern? mm for the heating center in Frirat and

• ■ .1,1

Keep the intended tree as small as possible, see below

209912/0117 _BA d original

Various solutions have already been proposed. Some of these solutions provide for a combustion chamber with smooth walls, the liquid to be heated being located on the outside of the combustion chamber and a smoke tube tube to facilitate the exchange of heat, if necessary with the aid of metal spirals or the like. According to other proposals, the boilers have no bores and the heat exchange is achieved by means of smooth surfaces of various shapes, in which the combustion gases _{9 are} optionally supported by devices to increase the turbulence that emit. In other designs, ribs are finally along the path of the combustion gases or water pipes provided with ribs on the outside to increase the exchange area on the smoke side,

However, these solutions are only partially provided Requirements, which the latter, however, in an economically and technically perfect manner with the inventive boilers are met, which, as in In the course of experiments and based on the experience gained could be determined an illuminated heat exchange with; the greatest possible efficiency in combustion enable extremely small space requirements.

The object of the invention is a boiler to create with which the aforementioned better technical Properties to be achieved.

This task is met by a boiler according to the invention for the combustion of liquid or gaseous fuels GTLSet ₉ which is characterized in that a large number of "room lines" are provided, which are

203812/01 * 7 ^ßA0 original

wise metallic surfaces are delimited, which are at least partially coated on both sides by the combustion © = · _t with the mentioned channels

essentially parallel to the longitudinal axis of the furnace and at least over a certain section peripheral here too are arranged.

Further details of the invention are more apparent from the following description of some preferred, however non-exclusive execution forms for the invention according to boiler, which are shown for example and without in the accompanying drawing.

Show it:

Pig, 1 a schematic longitudinal section of a first embodiment of the inventive boiler j

2 shows a schematic longitudinal section of a second embodiment of the boiler.

Pig. 3 is a schematic longitudinal section of a third Export shape of the boiler;

4 shows a schematic longitudinal section of a fourth Embodiment of the boiler;

5 shows a schematic longitudinal section of a fifth Execution form of the boiler;

6 to 26 show, in cross section, various possible embodiments of the boiler construction;

FIGS. 27 to 31 show, in cross section, various embodiments of the boiler construction in relation to that in FIG. 4 illustrated fourth embodiment of the boiler, and

Figs. 32 and 33 are a schematic diagram of the basic structure and view srepresentations, partly in section, of an arrangement with respect to the fifth embodiment shown in FIG of the boiler.

209812/0387

The one in Pig. 1 shown first embodiment of the boiler has a first furnace part 1, which does not necessarily have to be cylindrical and in which part of the combustion occurs and after which in the axial direction one leg of "smoke channels" 2 is, which peripherally along the separation surface 3 with the to heating medium A are arranged. Limit these '! Channels' with a part of its outer surface a second part following the first part of the combustion chamber in the longitudinal direction Part of the combustion chamber 4, in which the combustion is brought to an end and, due to the blind floor 5, a f-ftr the completion of the combustion extremely advantageous local reversal of the flue gases takes place. In the first part of the fire the flue gases, which are at a high temperature, emit heat directly through radiation to that of the heated medium A flowed around walls.

! fold of complete combustion caused by the due to the free vortex formed by the blind bottom 5 is extremely favored, the flue gases enter on their way inside the "channels" 2 remove heat mainly by convection. the Smoke channels 2 can be used in various ways, for example according to the type of cross-sectional representation shown in FIGS. 6 to 26, which will be described in more detail later, be formed.

The second embodiments shown in FIG form is characterized by the fact that the "smoke channels" 8, the same after that shown in FIGS. 6-26 Know how to be formed, delimit the combustion chamber 7 with their exposed surface or with parts 6 thereof. After the flue gases enter the combustion chamber

209812/0387 "o orwn".

flow in the axial direction baten _s their flow direction is reversed and they are ^{guided through the peripherally arranged '' Raucßkanäle sl} 8 »

A floor 9 provided in the rear part of the boiler, made of sheet metal around which water flows, or of fire-proof sheet metal Material transports the breath gases in the desired direction into the interior of the "channels" ·

Me the puddle chamber of the breath gases can be on the Burner side are located in the area of the front wall or elsewhere, in the event that they are located on the Burner is located opposite part, one or more lines arranged in the longitudinal direction are provided must which the flue gases to the rear part of the Move boiler. The firing system described enables optimal use of the space and does not have any Stagnation zones for the combustion gases; it improves that Combustion performance due to the high temperature caused by the outer parts of the "channels", their metallic Surfaces are coated on both sides by the combustion products, is achieved: these surfaces radiate Heat into the interior of the furnace and keep the flame hot; heat losses from the flue gases are also avoided, since there is only one flow reversal.

In the third embodiment shown in FIG. 3, the "smoke fringes" 13 limit their exposed ones Surface 10 or with parts thereof the combustion chamber 11 or a part thereof, which on the dem Burner opposite side has a blind base 12 (made of refractory material or the like.) Has.

The flow direction is determined by this floor 12 the flue gases are reversed and these are peripherally but

209812/0387 _b ad

Combustion chamber guided in the reverse direction, so that they enter the "raue channels" 13 from the front of the furnace · Preferably, the space 14 used for the second reversal of the flow direction of the flue gases can be formed by providing a corresponding recess in the TQr 15 of the furnace. The boiler according to FIG. 3 consequently has three flues, of which the first two are in. This type of furnace shows how the known principle of flame reversal in the combustion chamber can be adapted to the invention Metal mass in turn transfers the heat by conduction directly to the partition wall with the medium to be heated «

The heat radiated into the interior of the furnace by the walls of the "channels ¹¹ coated on both sides" keeps the flame hot and contributes to a) good combustion efficiency * The exchange is essentially terminated by convection in the last flue through the "channels". In the embodiment shown in FIG. 3, too, the "smoke channels" 13 can be designed as desired, for example in the manner shown in FIGS. 6 to 26.

In a fourth embodiment shown in FIG. 4 and in the sectional views according to FIGS. 27 to 31 of the boiler, the "smoke channels" are used in a different way · Due to their special geometry and with the help of a surface of suitable shape ea allow these "channels", two passage cross-sections for the smoke; to achieve gases. You Tig 4 shows a boiler with cylindrical

209812/0387

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shear interface between the flue gases and the heated liquid A (preferably, but not excluded Form), on the inside of which the "channels" 17 are arranged (the "channels" can be in a corresponding manner on the outer scythe i te be ordered). If these peripherally arranged "channels" have a cylindrical surface 18 as shown in FIG (Flame guide) enclose without necessarily being in contact with it, they enable the formation of a second passage section between the outer surface of the Ftthrungsro.kres and the part of the exposed surface of the "Channels" that point to the interior of the furnace. The flame guide 18, which is not necessarily circular must be, for example, from a metal pipe from a Hohr made of refractory material or from a metal pipe, the inner surface of which is lined with refractory material.

FIGS. 27 to 31 show, for example and without limitation, five possible ones in a cross section of FIG Arrangements of the "guide pipe" 18 which five types of previously appeared "channels" is assigned. The Burn "- Products flow along the guide tube and finally return due to the presence of the shutter 19 made of refractory material (Flg. 4) back to the front part of the boiler, from where it then flows through the space between the outer surface of the guide tube β and the exposed surface of the "channels" 17 flow.

The flue gases flow through the third train inside the "channels" 17 after a second reversal, which is in the Space 20 (Fig. 4) is caused, which is intentionally left free and advantageously in the form of a corresponding Recess formed in the front door 21 of the furnace

209812/0387

BATH

can be. This type of fire is characterized by the high temperature caused by the walls of the guide tube the flame is achieved, which not only has a beneficial influence on the efficiency of the combustion ", but also heat to the exposed surface of the "Channels" emits through its outer surface.

Xn Fig. 5 shows a fifth embodiment of the boiler, according to which a furnace is provided is in which the "smoke channels" with their outer surfaces

^ 22 or a part of the burners or a part of them limit, which latter has a blind bottom 22a (made of refractory material or the like) on the side opposite the burner,

In addition, a certain number of the "channels" 23 have in the rear zone (near the refractory floor) an opening 24 facing the combustion chamber (Fig. 5, 32 and 33) »through which the flue gases enter the" channels "and return to the front part of the boiler *

k Then the flow path of the flue gases in

a front reversing chamber 25 (Fig. 5 _f (which can be designed in.advantageous manner in the form of a recess in the refractory material)) again reversed and the flue gases enter the other "channels" at the front, in which the third passage takes place, a.

In Figs. 6 to 31 different types of "Rauchkanäleii" are shown, which consist of cylindrical surfaces with variable curve and lengthways running generators exist. In particular, these surfaces are on the inside of the partition 26 between the flue gases and the heated liquid, Fig. 6 to 13, or outside on the wall 27 »which delimits the combustion chamber,

209812/0387 bathroom

Pig. 24, 25, 29 »31, attached, or they" form together, like the pig. 14 to 23 and 26, 27, 30 can be seen, the partition wall 26a between its surface with a rope Belly gas at the edge of heated liquid.

Limit all of the aforementioned "channels" if they are arranged peripherally, in whole or in part Volume that can serve as a combustion chamber.

The above explanations clearly show the mode of operation and the use of the “channels ¹¹ provided in a described boiler.

The boiler described can be modified and varied in many respects, without affecting the paths of the Exceeding the invention

209812/0317

Claims (1)

limits ■ ¹⁰ ~ / TiIU (p PATEHTANSPEÖOHE 1, boiler for burning liquid or gaseous fuels, characterized in that a large number of clay "Eauofckanälen"(2;8;13;17; 23) are provided, which are delimited by preferably metallic surfaces ₉ which are at least partially on both sides of the combustion products are coated, the channels (2; 8; 13; 17; 23) preferably being arranged essentially parallel to the longitudinal axis of the furnace (1, 4; 7; 11) and at least over a certain section 4 peripherally thereto. 2 «boiler according to claim 1, characterized in that the "smoke channels" (2; 13) at least partially with parts their walls limit the combustion chamber (1,4; 11). 3. Boiler according to claim 1, characterized in that the "RauchkanÄle" (2) at least partially with parts of their Walls a section (4) of the combustion chamber (1,4) 4. Boiler according to one of claims 1 to 3t, characterized in that the "Rauehkanäle" (25 8; 13) are limited by profiled metal surfaces (3} 6; 10), which inside on a cylindrical wall (26) which separates the medium 1 to be heated and the combustion gases, are brought up. 5. Boiler according to one of the address 1 to 4, characterized in that the Baaehkaoftle (2; 8; 13; 17) are delimited by profiled metal surfaces which are 209812/0337 ^ßAD are established that with part of their course they die Form a partition (26a) between the medium A to be heated and the combustion products « 5. Boiler according to one of claims 1 Me 3 »characterized in that that the smoke channels (2; 8 $ 13 »17) are profiled through Metal surfaces "are limited, which are outside of a cylindrical wall (27) are attached, in the interior of which the combustion chamber is located. 7. Kesssäl according to one of the speech 1 "to 6, characterized in that that it has a first furnace part (1) with smooth valleys, to which a second furnace part (4) follows, which is at least partially limited by wall parts of the channels (2), the latter on the one hand with the first furnace part (1) and on the other hand with the ffamln in Are connected and with a rope of their walls delimit a space (4) in which the combustion completes will. 8 »Boiler according to one of claims 1 to 6, characterized in that that the channels (8) are arranged in the longitudinal direction essentially over the entire length of the furnace (7) and with this in the area of the rear wall (9) in connection stand in order to bring about a reversal of the abdominal gases against the front wall of the boiler. 9p boiler according to one of claims 1 to 6, characterized in that that the channels (13) are arranged in the longitudinal direction essentially over the entire length of the furnace (11) are and with this in the area of the rear wall (12) in connection 3 to a flow path of the flue gases first the rear wall (12), then against the front wall (15) 209812/0387 _BATH and finally to the Bäckwacd (12) Mn through the channels (13) after reversing in the area of a front hearing chamber (14) bring about. 10 · Sessel.nach one of 1 would appeal to his 6, characterized in ₅ that the "BaixehkanSle" (17) "at a rohrfönaigen Plaiamenführungßteil (18) of the Not -unbedingt with the channels (17) in contact must be, are arranged to the combustion products first through the guide part (18) to the rear wall (19) then through the space between the walls of the ducts (17) and the outer surface of the flame guide part (18) to the door wall (20) and then again into the ducts ( 17) »to be conveyed to the rear wall (19) after the confluence in the area of a front combustion chamber (20). 11. Armchair x & ch one of claims 1 to 6, characterized in that that he has a plurality of longitudinally arranged in substantially the entire length of the furnace "Channels" (23), some of which are in the burn chambers in the rear file of the same opening opening (24), with the smoke gases on their third passage in the interior of those channels (23) which do not have such an opening and in conjunction with the stand, move. 209 * 12/03 * 7 ^BAD original Blank page