DE3310026A1 - Boiler with blower burner - Google Patents

Abstract

In combustion sites operated with blower burners, especially boilers, sound absorbers are necessary to reduce noise emission. According to the invention, in a boiler with a combustion chamber arranged in the fire space, a combustion chamber extension which conducts the outflowing heating gases is arranged behind the floor of the combustion chamber, and uses the combustion chamber itself as the region in which the sound absorber elements are fitted. The combustion chamber extension itself can of course be constructed as a sound absorber.

Description

8865 / me / gö

Patent and utility model auxiliary application

August Brötje GmbH & Co., August-Brötje-Str. 17, 2902 Rastede 5

Boiler with fan burner

The invention relates to a boiler operated with a forced draft burner with a combustion chamber arranged in the combustion chamber, behind the bottom of which a combustion chamber extension that conducts the outflowing heating gases is arranged.

In the case of fireplaces operated with a fan burner, in particular boilers, silencers are used to reduce the Noise emission necessary. It is common to place a silencer at the end of a path through which the heating gases flow to arrange. Often the silencers are arranged in the exhaust pipe between the boiler and a chimney. In the known arrangements of the muffler ■ the structural effort and the space required for the Installation disadvantageous. Require silencers to be installed in exhaust pipes outside the boiler also a not inconsiderable installation effort.

The invention is based on these disadvantages to avoid without having to do without a silencer is.

According to the invention, this object has been achieved by that the combustion chamber extension has muffler elements.

According to the invention, the component is thus a Combustion chamber extension for accommodating silencer elements used, whereby a combustion chamber introduced into a combustion chamber forms a structural unit with can form a muffler. Special installation space for the silencer inside or outside the boiler is not needed anymore.

The bsi a boiler for the conduction of the outflowing heating gases Existing combustion chamber extension can either be designed as a silencer itself according to the invention or receive corresponding additions or fixtures which sound-absorbing effects can be achieved. For example, it is possible to design the combustion chamber extension as an absorption silencer. Of course the combustion chamber extension can also be designed as a reflection silencer.

It is also possible with a combustion chamber extension Reflection silencer elements and absorption silencers element to combine with each other.

In one embodiment as an absorption silencer, it is provided that an outer wall of the combustion chamber extension is a perforated plate, -and that in the cavity enclosed by the perforated plate sound-absorbing material is arranged with high absorbency.

A design as ■ a reflection silencer provides that the combustion chamber extension is subdivided into the chambers, which with the heating gas flow through openings in the outer wall stay in contact.

An exemplary embodiment of the invention, from which further inventive features emerge, is shown in the drawing shown.

The drawing shows a schematic sectional view a boiler with a forced draft burner 1 which fires into a substantially cylindrical furnace 2. In the The combustion chamber 3, which is also cylindrical in this exemplary embodiment, is inserted with a curved impact floor 4, velcher deflects the heating gases generated by the flame 5 of the burner in the direction of the arrow. The heating gases flow through the heating gas paths 6 and 7. For improved conduction of the heating gases within the heating gas paths 6 is the combustion chamber 3 is extended in the outflow direction of the heating gases. This combustion chamber extension is designed as a silencer, a combination of absorption and reflection construction is selected. With 9 and 10 there are two sections denotes, which are designed in absorption construction by placing the outer wall of the combustion chamber extension in the area of sections 9 and 10 from a perforated plate 11 or 12 consists. The interior of the combustion chamber extension, which is enclosed by the perforated sheets, is made of sound-absorbing material filled with a high degree of absorption.

Sections 13 and 14 of the combustion chamber extension are designed as reflection silencers. Make up these sections chambers enclosed by the walls of the combustion chamber extension, which are connected to the heating gas flowing past by suitable chambers Openings 15 and 16 are in communication.

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Claims (6)

/ί.j Boiler operated with a forced draft burner with im Combustion chamber ^ arranged combustion chamber, behind the bottom of which a combustion chamber extension that conducts the outflowing heating gases is arranged characterized in that the combustion chamber extension (8) has silencer elements having. 2. Boiler according to claim 1, characterized in that the combustion chamber extension (8) is designed as Absorbtionsschalldämpfex. JJj ₁ Boiler according to claim 1, characterized in that the combustion chamber extension (8) is designed as a reflection silencer. 4. Boiler according to one of the preceding claims, characterized in that the silencer elements of a combustion chamber extension (8) reflection silencer 03,14) and absorption silencer (9 »10) are provided. 5. Boiler according to one of claims 1, 2 and 4, characterized in that the outer wall of the combustion chamber extension is a perforated plate (11, 12), and that sound-absorbing material with high absorption capacity is arranged in the cavity enclosed by the perforated plate. - 2 - 6. Boiler according to one of claims 1, 3 and 4, characterized
characterized in that the combustion chamber extension (8) is subdivided into chambers (13 * 14-) which are connected to the heating gas flow through openings (15, 16) in the outer wall.