DE2049336A1 - Central heating boiler with 'reversing combustion chamber - Google Patents

Description

Herne, 8000 Munich 23,

Freiligrathstrasse 19. Eisenacher Strasse 17

P.O. Box 140 Dipl.-Ing. R. H. Bahr Pat. Betzier

Dipl.-Phys. Eduard Betzier ⁵ _h ¹⁰¹⁴ Dipl.-Ing. W. Herrmann-Trentepohl _T 398013

Telegram address: Telegram address:

Bahrpatente Herne PATENTANWÄLTE Babetzpat Munich

Telex 08 229 853 Telex 0524562

l ~ - ■ ~ l Bank accounts:

Bayrische Vereinsbank Munich 952287

O (Ι / QQO C Dresdner Bank AG Herne 202 436

L · U HU O «JU Postscheckkonto Dortmund 558 68

Ü Ref .: MO 23I8 V / Rg. please indicate in the answer Please send a letter to: Munich

DE DIETRICH & CIE., 67 - Niederbronn-les-Bains

Central heating boiler with reversible combustion chamber

The invention relates to a central heating boiler with a reversing combustion chamber, in which most of the combustion gases is deflected in the combustion chamber.

In the combustion chamber of such a central heating boiler, the flame of the burner runs parallel to the longitudinal axis, extends more or less far into the combustion chamber and then strikes back forwards. The hot gases become too close to the head of the burner dissipated the convection exchange surfaces.

109 817/1399

-Z-

This arrangement was designed to provide combustion chambers with a to have free stretch available and to favor the "burn along a fairly short distance · If However, if you want to reduce the volume of the boiler in order to lower the manufacturing price, there are disadvantages.

When the combustion chamber for the flame and its dynamic properties becomes relatively narrow, it forms at the rear Part of the chamber is a collection of hot gases that act as a cushion and prevent the flame from reaching the rear wall to advance into the chamber. This firstly increases the efficiency and secondly, the volume intended for the flame is reduced, so that the combustion is incomplete and the flame is drawn out so that it hits the convection exchange surfaces, which increases the cleanliness adversely affects the combustion and contaminates the heating surfaces with it, which again causes the Efficiency is reduced.

To overcome these disadvantages, it is known to use burners whose burner head is more or less far in the combustion chamber protrudes. However, such burners are expensive and delicate to operate.

The invention is based on the object of eliminating the disadvantages mentioned above.

This task is solved by in the walls of the combustion chamber trained decompression channels, which the dem

10 9 8 17/1399

Burner opposite part of the chamber with the normal Connect channels for the combustion gases. Through the Decompression channels are discharged the gases that are usually accumulate in the back of the combustion chamber.

The invention is explained below with reference to two exemplary embodiments shown in FIGS. 1 and 2. It shows;

Fig. 1 is a perspective view of one of sub-elements built boiler and

2 shows a schematic longitudinal section of one of one single block existing boiler

The embodiment shown in Fig. 1 relates to boilers, which are usually composed of cast parts.

The main exhaust of the combustion gases takes place on the side of the burner, not shown, through one or more openings.

According to the invention, the compression openings or channels are provided which form a connection between the combustion chamber b and the lower heating ducts c.

In the selected embodiment, these openings exist or channels of slots d through the spaces are formed, which result from the sealless assembly of the individual sub-elements.

1 0 98 17/1399

So that the decompression openings are effective without disturbances occurring in the heat exchange of the boiler, it is important that the size of the slots d does not exceed that of the opening or openings a; which are on the side of the burner ₀

Too large a slot would result in too much heating Gases would be led to the rear of the combustion chamber, causing incomplete combustion to occur and Flame tips would knock out of the combustion chamber, which would increase the amount of heat to be exchanged too much at this part of the boiler compared to the burner.

The aspect ratio of the secondary decompression channels d and the main channels a must match the length of the Combustion chamber and adapted to the properties of the flame.

Another advantage of the invention is that not only the distribution of the flames along the combustion chamber is improved, but that also the distribution of the burned gases along the convection exchange surfaces the boiler parts is improved, with the advantages of the reverse combustion chamber in terms of quality ^ the combustion are preserved.

The embodiment shown in Fig. 2 relates to a one-block boiler such as the well-known two-pass steel boiler.

1 0 9 8 1 7/139

The cylindrical combustion chamber is -of convection exchange surfaces f and most of the burnt gases reach them through the openings g.

In this embodiment, the decompression openings h are formed in the rear part of the combustion chamber e and the deflected gases flow in the channels i, X ₁ , which also enable them to effectively exchange the heat carried out. These channels can open out on one side (channels i.).

In this embodiment, the secondary heat exchange surfaces T is a size that corresponds to the amount of combustion gases that flow along them.

1 0 a 8 17 i 1 %%

Claims (2)

Patent application ψ'- ψ 'ü § Yes-- © 1. j ZentrallieiziingskesseJL ialt ümkehrfejr ejrofegromey _? in which the largest part of the yg3Fbyeiiiiiiiigggg.se in the SF ©? lli chamber is diverted ^ fird, marked by channels (a) formed in the areas of the combustion chamber, which (the 4§W PF ^ ffli§F ^ Pg part of the For a long time with the noFmalen Eajaflem (c) füi? t | ie associate. 2. Boiler according to ^ Lnsprucb. 1, characterized gekeimzeichnet that the total cross section of all · peketmpressipnskanale (a) is not larger than that of the normal Qraskan ^ .le (e) lying laterally on the head of the burner ^ § 9 4 ^a §§ most of the Verbreniiungsgase in the combustion chamber diverted 3, boiler according to claim 1 qder 2 _? marked dadpreh; _? that he consists of partial elements built isi>, and that the. decompression channels (a ^ formed by interstitial spaces z; yisehen the partial _{elements of the boiler turn?} which result from the fact that the successive elements are mounted at this point without any piping Boiler according to claim 1 or g _? ^ ad ^ rch that he made a single B, lQgk Wf§tf ^k t _? ill n and ^ # §rfn cross cliiiitt led 1? / 1 5 »Kettle after. Claim 4, characterized in that the decompression channels (i, ij on one side and / or open on the opposite side of the burner. 109817/1399 Blank page