EP0086767A1 - Heating apparatus with air circulation - Google Patents

Abstract

Heating apparatus for boilers, domestic fireplaces or other installations using heated air, in which the preferably pulsed ambient air is forced through vertical pipes (3) which are arranged side by side and parallel to one another in a given number of rows and in which between each pair of rows there is provided a space (4), at the bottom of which the means of combustion (5, 6) is situated, this space, which is perfectly sealed or which can be hermetically closed, comprising on the one hand one or more secondary air inlets (11) in order to permit the entry of the combustion air and on the other hand one or more interconnected parts for the discharge of the burnt gases. <IMAGE>

Description

The present invention relates to a new type of heating device for boilers, domestic fireplaces and other heated air installations.

If it is known to use air as a heating means, in known systems, more generally one uses forced air, this was housed in one or more horizontal spaces placed above the source of heat, which only generates a fairly low heat output.

The present invention overcomes this drawback by proposing to pass ambient air, preferably pulsed air, through vertical ducts arranged side by side and parallel to each other in a certain number of rows and or between each pair of rows is provided a space at the bottom of which is located the combustion means, this perfectly hermetic space comprising on the one hand, one or more air inlets to allow the entry of combustion air, and on the other hand, a or several outlets joined together for the evacuation of the burnt gases.

The heated air, by itself, will rise in the ducts; it can be forced to evacuate there, more quickly, by a turbine, at the outlet of the conduits the heated air being combined in one or more heating vents.

Depending on the heat source that we are going to use, which can be gas, we can provide a ramp of a certain length - it can be the same for example for fuel oil - and we can provide a device comprising a certain number of ramps and therefore a certain number of pairs of rows of conduits, each row of which has a certain length.

• la figure 1 est une vue schématique en coupe transversale centrale dans la partie intérieure d'un appareil conforme à l'invention et prévu pour une rampe de combustion gaz et/ou mazout;
• la figure 2 est une vue partielle de profil de la figure 1;
• la figure 3 est une vue schématique par un côté d'un appareil conforme à l'invention;
• la figure 4 est une vue schématique de face d'un appareil conforme à l'invention.

In order to better understand the invention and to highlight its characteristics and advantages, it is now described with reference to drawings which represent:

• Figure 1 is a schematic view in central cross section in the interior of an apparatus according to the invention and provided for a gas and / or fuel oil combustion ramp;
• Figure 2 is a partial profile view of Figure 1;
• Figure 3 is a schematic view from one side of an apparatus according to the invention;
• Figure 4 is a schematic front view of an apparatus according to the invention.

Referring to Figure 1, there is shown by (1) a sheet forming the frame of the hearth, by (2) a layer of insulating material, glass wool for example, by (3) the air ducts, by (4) the heating chamber or combustion chamber, by (5) the combustion ramp, by (6) the gas outlet orifices, by (7) any humidification tanks.

As shown in Figure 2, the air ducts (3) are side by side and placed horizontally so as to form on each lateral side of the heating chamber (4) a row.

Of course one can provide a series of pairs of rows of conduits (3) between which is each time provided a heating chamber (4).

These conduits (3) are open both at their upper end (3 ') and at their lower end (3 ").

By their lower ends (3 ") the ambient air from the conduits (3) will be able to be introduced, be heated in contact with the heating chamber (4) and entrained by the simple normal effect of the heat rising upwards and lead to the upper end (3 ') of the conduits (3).

Preferably, the ambient air is at the bottom pulsed by a turbine, schematically represented by (8), and similarly at the top the heated air, preferably humidified, is taken up by exhaust vents (9) (see Figures 3 and 4).

To allow combustion in the heating chamber (4), there is provided a gas inlet pipe (10) and an inlet (11) for ambient air (secondary air), and an outlet outlet (12) for the burnt gases.

In order to prevent the heat from the heating chamber (4) from rising too quickly, horizontal fins (13) are provided on each longitudinal side wall of the heating chamber (and at the top) (Figures 1 and 2) placed in staggered rows, which will also maintain the heat and better circulate the burnt gases.

In known manner, the heating chambers (4) will be perfectly hermetic and moreover, of course, but not shown, provision is made to use a pilot system with safety thermocouple for switching on the device which will also be equipped with a thermostat which will regulate its start and stop at a desired temperature.

The invention is not limited to the embodiment described and shown which is particular to the use as a heat source of the gas; a similar arrangement of the heating chamber (4) and the conduits (3) could be provided for the fuel oil which will however require the use of a burner; on the other hand, more important arrangements are to be envisaged if one envisages like heat source wood or coal.

Claims (5)

1. Heating device for boilers, domestic fireplaces and other heated air installations, characterized in that the preferably pulsed ambient air is forced through vertical ducts (3), arranged side by side and parallel to each other in a certain number of rows and where between each pair of rows is provided a space (4) at the bottom of which is located the combustion means (5, 6), this perfectly hermetic space. or can be hermetically sealed, comprises on the one hand one or more secondary air inlets (11) to allow the entry of combustion air, and on the other hand one or more parts joined together for the evacuation (12) of the burnt gases. 2. Device according to claim 1, characterized in that, between the frame (1) and the air ducts (3) and the heating chamber (s) (4), a layer of insulating material (2) is placed. 3. Device according to any one of claims 1 and 2, characterized in that the heating chamber (s) (4) are surmounted by a humidification tank (7) coming into contact with the heated air leaving the upper part (3 ') of the conduits (3). 4. Device according to any one of claims 1 to 3, characterized in that horizontal fins (13) are staggered on each longitudinal side wall of the heating chamber (s) (4). 5. Device according to any one of claims 1 to 4, characterized in that the ambient air is pulsed at the lower end (3 ") of the conduits (3) by a turbine (10).

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