NL1033455C2 - Built-in fire. - Google Patents

Description

built-in fire

This invention relates to a built-in fire comprising a combustion chamber with at least one inner wall, wherein the combustion chamber can be closed by a closing element. The invention relates more particularly to a gas built-in fire or a built-in fire on wood or coal.

Because of the higher efficiency, fireplaces 10 (average efficiency 5 to 15%) are often replaced by built-in fireplaces - also called cassettes, built-in stoves or inserts - that achieve returns of 50 to 65%.

There are hundreds of models on the market, with either wood, coal or gas as fuel. Because built-in fireplaces are closed by a closing element, preferably a window or elevator door, they are distinguished from fireplaces. Built-in fireplaces on wood or coal are always fitted with a chimney for smoke extraction. Built-in gas fires can optionally be provided with a chimney, but can also be manufactured in a hermetic version. The latter then have a line for the supply of fresh air and a line for the discharge of the flue gases.

25

The walls of many of the known built-in fireplaces are made of metal. Such embodiments have the disadvantage that the metal walls extract a great deal of heat from the fire at the start of the burning process, resulting in a lower efficiency. Moreover, the combustion will not be so pure, as a result of which the walls and the glass of the sealing element of the sealing element will quickly show traces of soot deposits.

The built-in fireplaces whose walls are made from chamoflex plates do not have these disadvantages. However, chamoflex plates will crack and crumble very quickly due to their softness. Since these plates still have many advantages, they will often be sprayed black for protection. This solution does have the disadvantage that the plates will discolour over time, which of course no longer looks good.

The object of this invention is to provide a built-in fire that no longer has the aforementioned disadvantages.

The object of the invention is achieved by providing a built-in fire comprising a combustion chamber with at least one inner wall, wherein the combustion chamber 20 can be closed by a closing element and wherein at least one inner wall is provided with a covering element made of a reflective and heat-resistant ceramic material. By providing the inner wall of the combustion chamber with such a covering element, the heat generated will be reflected much better, whereby much higher temperatures in the combustion chamber will be achieved in a short time compared to known systems.

In addition, due to the higher temperatures, a much purer combustion will occur, resulting in much less soot deposits on the inner walls and closing element.

An efficiency of more than 80% is achieved with the built-in fire according to the invention. Due to the high efficiency and the high temperatures, the covering element constantly cleans itself.

In a preferred embodiment of the built-in fire according to the invention, the said covering element is made of a dark-colored transparent ceramic material. Said covering element is preferably black-reflecting. Due to the reflective effect of the covering element, the flame play will be much more beautiful.

Preferably, said covering element has a thickness between 3 and 5 mm. The thickness of the covering element is in particular 4 mm.

20

In a more special embodiment of the built-in fire according to the invention, said combustion chamber comprises two side walls and one rear wall, wherein these walls are each provided with the said covering element. By providing the entire surface of the inner walls with the covering element, the heat is reflected even better and, moreover, the flames are beautifully reflected.

The walls of the built-in fire according to the invention are preferably made from chamoflex plates. By providing the 4 covering element on these plates, they will crack and crumble much less quickly.

In a particularly advantageous embodiment of the built-in fire according to the invention, a resilient element is provided between at least one wall of the combustion chamber and the covering element. This resilient element allows any expansion of the walls to be absorbed under the influence of the heat.

10

In order to further clarify the properties of this invention and to indicate additional advantages and details thereof, a more detailed description of a built-in appliance according to the invention now follows. It is clear that nothing in the following description can be interpreted as a limitation of the protection claimed for the invention in the claims.

In this description reference is made to the accompanying drawings by reference numerals, in which: figure 1 is a cross-section of a fireplace according to the invention; Figure 2 is a detailed representation of the part B indicated in figure 1; Figure 3 is a perspective representation of a built-in fire according to the invention.

A built-in fire (1) according to the invention and as represented in figures 1 and 3 comprises a combustion chamber (2) with at least one inner wall (4), wherein the combustion chamber (2) can be closed off by a closing element (3). The closing element (3) can be a standard window door, but it can also be a lift door 5.

The inner walls (4) of the combustion chamber (2) are provided with a covering element (5) which is made from a reflective and heat-resistant ceramic material.

Due to the reflective effect of the covering element (5), the heat will be reflected much better, as a result of which much faster, high temperatures will be achieved inside the combustion chamber (2).

Moreover, by designing the cladding element (5) in a black reflective ceramic material, for example ROBAX®, the built-in fire in use will very nicely reflect the play of flames.

The covering element (5) preferably has a thickness of approximately 4 mm and is connected via, for example, an adhesive connection to the walls, preferably the two side walls and the rear wall, of the combustion chamber. Because of the good properties, the walls (4) of the combustion chamber (2) will be made from chamoflex plates. The walls (4) of the combustion chamber (2) preferably have a thickness of approximately 2.5 cm.

In order to absorb the expansion of the walls under the influence of the heat, a resilient element is provided between the cladding elements 6 (2) on the two side walls and the side wall.

An efficiency of more than 80% is achieved with the built-in fire (1) according to the invention. Due to the high efficiency and the high temperatures, the covering element (5) will constantly clean itself.

1033455

Claims (5)

Built-in fire (1) comprising a combustion chamber 5 (2) with at least one inner wall (4), wherein the combustion chamber (2) can be closed by a closing element (3), characterized in that at least one inner wall (4) is provided with a covering element (5) made from a reflective and heat-resistant ceramic material. 2. Built-in fire (1) according to claim 1, characterized in that said covering element (5) is made of a dark-colored transparent ceramic material. Built-in fire (1) according to claim 1 or 2, characterized in that said covering element (5) has a thickness between 3 and 5 mm. 20 4. Built-in fire (1) according to one of the preceding claims, characterized in that said combustion chamber (2) comprises two side walls and one rear wall, said walls each being provided with said covering element (5). 5. Built-in fire (1) according to one of the preceding claims, characterized in that a resilient element is provided between at least one wall (4) of the combustion chamber and the cladding element (5). 1 0 3345 ^