High output heating device

Abstract

The invention concerns a multiple-fuel heating apparatus wherein: the combustion chamber (1) forms the main support structure of the heating apparatus and is made of sheet metal bent and welded (2) so as to be completely sealed, optionally except at the joint with said door; the elements (20) forming the outer cover are fixed to the combustion chamber, the fixing elements not passing through the chamber and said elements not being necessarily fixed together.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a new concept for high-output, multi-fuel, domestic, heating device comprising a sealed (or almost sealed) heating body whose operation can be remotely controlled. [0002] Sealed heating body should be understood as a heating body whose only communication with the outside consists of an inlet for primary cold air and an outlet for burnt gases. TECHNOLOGICAL BACKGROUND AND STATE OF THE ART [0003] In recent years, major efforts have been undertaken to create “modular” domestic heating devices that have the same shape, design or covering irrespective of the fuel used or of the nominal power required. These different devices are characterised by a combustion chamber (or a heating body) of specific dimensions for a solid, liquid or gaseous fuel or for a specified power level. Thus, the rear wall of the combustion chamber may comprise an intermediate part with an outlet opening adapted to each predefined situation (see patents ...

AI Technical Summary

Benefits of technology

[0027] As a particular advantage, the outer hood is formed by the combustion chamber itself. The sealed feature of the combustion chamber of the device according to the invention allows to achieve a very high output, of the order of even 80% for heating with wood, which is a considerable advantage to those skilled in the art and / or to the user (reduced consumption).

[0033] According to another preferred embodiment of the invention, the heating device also comprises a duct provided with a second damper or valve for bringing the secondary air from the outside towards the chamber, said damper being controllable by the user. This additional air supply advantageously allows to improve the elimination of the solid particle residues in the smoke, at low operating levels (slow).

Problems solved by technology

The fixing of the parts is achieved by complex and inefficient techniques making use of tie-rods, throats and putty.

Apart from the loss of productivity, this method of assembly has drawbacks associated with the use of putty.

In fact, when the putty dries, it may shrink or present micro-cracks, which lets air enter the chamber, thus adversely affecting the output of the device.

The presence of putty makes it difficult to obtain the required seal in accordance with the various standards in force in different countries (e.g.: EPA standards in the US).

Moreover, during transportation of the device after manufacture, flows of putty may appear on visible surfaces, which requires the intervention of expensive after-sales service.

The assembly of the various walls thus proves difficult and the seal of the combustion chamber is not guaranteed.

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