DE8510099U1 - Gas condensing boiler - Google Patents

Description

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Gas Brennwer tkes.se 1

The innovation concerns a gas condensing boiler according to '■ ·' Preamble to the main claim.

Gas condensing boilers of the type mentioned are known, and it is also known from FR-PS 2 144 119 (71.24058) to introduce additional air into the flue gas for "normal" = "" boilers in order to avoid condensation in the chimney . For this purpose, similar to the subject of DOS 31 10 306, a blower air supply line connection is provided, which is used as a blow-out mouthpiece at the end of a blower pressure line in an insertion socket of the boiler's exhaust gas line as an elbow in such a way that the supply air outlet points in the outflow direction of the exhaust gas flow. Turbulence effects between supplied Zn

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air and the exhaust gas are only oriented on one side due to the elbow arrangement in the device according to the FR-PS and in about the same sense as with the device according to DOS 31 10 306, in which the supply air is not even centrically, but one-sidedly oriented, is introduced. Apart from that, in both cases is for the supply air supply A supply air connection must be attached to the flue gas nozzle or to the flue pipe to the chimney.

The innovation is accordingly based on the task of a

to avoid such a lateral supply of supply air and at the same time in the area of supply air outflow for to ensure a swirl that captures the total cross-section of the exhaust gases flowing out, namely below the Point of view / that condensing boilers are less about preventing aggressive condensates from separating goes, which already largely goes out in the boiler itself. be separated, but to take into account the high proportion of water vapor in the flue gases, which would otherwise be in the chimney condense out and damage it.

This task is with a gas condensing boiler of the type mentioned after the innovation by the in the license plate of the main claim cited features solved. Advantageous further developments arise after the dependent Subclaims.

With this new solution, a special one is to be attached to the outside of the exhaust gas nozzle or the exhaust pipe Air supply spigot unnecessary, as the air supply line is centric, as it were, engages centrally from the inside into the exhaust pipe and the exhaust gases as tubular Envelop the supply air line. This is also possible without a large outlay in terms of equipment created to arrange turbulence elements in the mouth area of the supply air line, which the "smooth", hose-like onward flow of the exhaust gases with the central supply air flow and thus interfere with the overall

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Provide cross-sectional swirling of the two streams. Apart from that, the special assignment

\ nung the supply air line to the exhaust nozzle, as this

necessarily only from the exhaust gas collection room of the

j fenden boiler is introduced into the exhaust pipe

can be, the advantage that the thereby supplied

j supply air at least a certain degree of warm-up

! moves.

Advantageous further developments of this basic solution are that the exhaust pipe in the area of the centrally arranged end of the air supply line is designed in the form of a Venturi nozzle and furthermore therein, that the supply air line with its charging-side end with the pressure side of the boiler burner fan is formed standing in connection. The latter further development is advantageous an additional one Blower for the air supply line is unnecessary.

Moreover, due to the water vapor condensation that can be expected in such condensing boilers, it is subject to the approval authorities Page the condition has been made that these boilers are only made vapor diffusion-tight To connect chimneys or to insert special exhaust pipes in existing chimneys, which, however can lead to costs that can usually be higher than the acquisition costs of such a boiler. Such measures are, however

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for condensing boilers designed in accordance with the innovation no longer necessary, as this dilutes the exhaust gas with air and takes care of it at the same time is that the air dilution of the exhaust gases with certainty covers the total outflow, so not itself in parts still unmixed flow streams result * * ben.

ι The new type of gas condensing boiler is described below

j. hand of the graphic representation of an execution

■; example explained in more detail.

The embodiment of the condensing boiler 6 shown in the only exemplary embodiment is not binding, since such boilers can be designed differently in their basic structure, with such Kettles, however, have the basic principle in common that at the end of the downward gradient they are oriented everywhere Heat exchange surfaces an exhaust gas collection chamber or condensate collection chamber is arranged, on which the exhaust pipe sits for the exhaust pipe connection to the chimney.

As can be seen from the exemplary embodiment, the supply air line 1 is centered in the exhaust gas nozzle 2 of the exhaust gas collection chamber 3 introduced and held in a suitable manner in the exhaust port. The supply air duct

This means that an integral component of the boiler itself forms here. Air mixing is in the area of the end of the air supply line 1 inside and / or outside swirl elements Ij 4 arranged. Appropriate and advantageous here are i: the shark that fixes the end 1 ″ of the supply air line 1.

ter 4 'of the exhaust port 2 is also already confusing

t ". belungselemente formed, and further is / as DAR asked 'is formed of the very ^ outflow in the form of a Venturydüse. In order not to have to / as indicated by dashed lines to the left in the embodiment below, at beschikkungsseitigen end I ¹ arrange the air supply line 1 an additional blower What would be possible in principle, however, is advantageously the supply air line 1 with its charging end 1 'connected to the pressure side of the boiler burner fan 5, so that an additional fan is unnecessary in a suitable manner in connection with the pressure side of the blower, whereby, which is not specifically shown, for example, the strength of the supply air flow can be regulated as required by a control flap to be arranged there or in the conduit.

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Claims (3)

ι, · * et «· t · 193) Protection claims: 1. Gas condensing boiler, consisting of a water-bearing renden housing in which the interior spaces leading to an exhaust port of an exhaust gas collector are arranged are, wherein the exhaust gas nozzle is assigned a supply air line for supplying air by means of a fan and the supply air line with its exhaust opening, which is smaller in diameter in relation to the exhaust gas nozzle is arranged centrally in the exhaust pipe, characterized in that the air supply line (1) is introduced centrally into the exhaust gas nozzle (2) from the exhaust gas collecting chamber (3) is arranged and in the area of the end of the air supply line (1) inside and / or outside Luftwirbelungselernente (4) are arranged. 2. Boiler according to claim 1, characterized in that the exhaust gas nozzle (2) in the area of the centrally arranged end (1 ") of the air supply line (1) in the form of a Venturi nozzle is. 3. Boiler after. Claim 1 or 2, characterized in that the supply air line (1) with its ^{charging-side end (I 1} ) with the pressure side of the boiler ■ ■ ■ · • · ■ »rarr * burner fan (5) is designed to be connectable, ft ■ (Il I I I