FR3028921A1 - HEATING INSTALLATION COMPRISING A WOOD HEATING APPARATUS AND A WALL PROTECTION PLATE - Google Patents

Abstract

The invention relates to a heating installation (1) comprising: - a wood-burning appliance (2) comprising a combustion chamber (3) provided with an upper orifice (4) and a lower orifice (7), - a building outlet (5), - a connection duct (6) interposed between said upper orifice (4) of the hearth (3) and said building outlet (5), for evacuation of the combustion products generated by said appliance ( 2), - an air supply duct system (9) interposed between an air inlet (8) and said lower orifice (7) of said furnace (3) for supplying combustion air to said furnace (3). ), and - a wall plate (10) placed next to a wall wall (M) to be protected in front of which is positioned said apparatus (2). And in accordance with the invention, this wall shield (10) has a hollow volume (11) extending between a first port (12) and a second port (13), and said air supply duct system. (9) comprises: - an upstream duct section (91), interposed between said air inlet (8) and said first orifice (12) of said plate (10), and - a downstream duct section (92), interposed between said second port (13) of said wall shield (10) and said lower port (7) of said focus (3).

Description

TECHNICAL FIELD TO WHICH THE INVENTION RELATES The present invention relates to a heating installation comprising a wood-burning appliance (type stove or insert), intended to be positioned near a wall (wall or partition wall), and which is associated with a protective plate of this wall (called wall protection plate). BACKGROUND OF THE INVENTION Wood-burning heating appliances comprise a firebox chamber at the upper part of which is provided an upper orifice for the evacuation of combustion products via a duct which extends up to a building exit. To function properly, these woodburning heaters generally include an air supply (called "combustion air") taken outside the equipped building and which is brought by one or more appropriate ducts to a lower orifice arranged at from the lower part of the hearth. This combustion air supply can be achieved by means of a wall penetration device arranged near the wood-burning appliance, provided with an external grill, and connected to the lower orifice of the fireplace by means of 'a dedicated conduit system (s). As described in the document FR-2 976 050, the combustion air can also be taken at the building outlet associated with the flue gas exhaust duct, and conveyed to the lower part of the furnace by an annular chamber of flue gas. a peripheral duct formed around this flue gas duct, in association with an extension located at the rear of the heater. But this rear extension dedicated to the combustion air intake is not very aesthetic; it is bulky and moves the heater away from the nearby back wall; in addition, this extension can be dislocated accidentally during household operations (sweeping or vacuuming ...). On the other hand, certain installation standards for wood-burning appliances impose minimum distances between the fireplace and the nearby combustible wall walls (generally of the order of 20 to 50 cm depending on the appliances). However, again, these minimum distances move the heater away from the back wall, which takes up space and is not accepted by users. To respond to this problem, the industrialists have developed wall-mounted protection plates, in the form of heat shields, placed at the rear of the heater, against the wall-mounting wall, providing protection against this wall against the thermal radiation of said heater and associated conduits. These wall plates are generally composed of a thickness of insulating material, associated with a front end tray, for example a painted sheet metal plate and / or cut with a decoration. The thickness of insulating material often consists of a rigid fire resistant wall, for example calcium silicate, ensuring good mechanical strength and good durability over time. But these plates are relatively expensive because of their complex structure and the nature of their constituent materials.

OBJECT OF THE INVENTION The present invention aims to provide a heating installation to overcome these disadvantages. For this purpose, this heating installation is of the type comprising: a wood-burning appliance, such as a stove or insert, comprising a hearth chamber, at the top of which is provided an upper orifice for evacuation of the products; at the bottom of which is provided a lower combustion air inlet opening, - a building outlet, - a connection duct interposed between said upper furnace orifice of said wood burning appliance and said building outlet for venting combustion products generated by said wood burning appliance; - an air supply duct system interposed between an air inlet and said lower furnace port of said furnace to 3028921 3 wood, for the combustion air supply of said wood heater, and - a wall plate placed against or facing a wall wall of teens to be protected, in front of which wall wall 5 of backing is positioned said wood burning appliance; and in accordance with the present invention, said wall shield includes an inner hollow space extending between a first port in communication with the outside of said wall shield, and a second port, also in communication with the exterior of said wall protection plate; in addition, said air supply duct system comprises: - an upstream duct section, interposed between said air inlet and said first port of said wall protection plate, and - a downstream duct section, interposed between said second port of said wall shield and said lower furnace port of said wood heater. It is then understood that the wall protection plate participates in the supply of combustion air to the heater, and allows to remove a part of apparent duct. This heater can then be brought closer to the back wall and the overall aesthetics improved. In addition, this wall plate is ventilated when the heater is operating and can therefore do without the insulating material present in the wall plates of the prior art.

Such an installation also makes it possible to limit the accidental release of the combustion air inlet ducts situated at the rear of the heating apparatus. In a preferred embodiment, the wall-protection plate is box-shaped comprising: a rear wall provided with an external face intended to come opposite said wall-mounting wall, and an internal face; front wall provided with an outer face intended to come opposite said wood heating apparatus, and an inner face, and - a peripheral wall, provided with an outer face and an inner face, 3028921 4 which inner faces said rear, front and peripheral walls delimit said hollow space for the passage of combustion air. It should be noted that this hollow box-shaped wall protection plate may have all shapes and dimensions adapted to the desired aesthetic. It can extend over part of the height of the wall wall or over the entire height of the wall, from the floor to the ceiling. Preferably, the first orifice is formed in the upper part of the wall protection plate, and the second orifice is formed in the lower part of the front wall of this plate. According to a first possible embodiment, said first orifice is formed in the upper part of the front wall of said wall protection plate, and said upstream pipe section is constituted: by a peripheral tube within which said duct is housed; linkage for discharging combustion products from said woodburning heater, said connecting conduit and said peripheral tube defining therebetween a peripheral annular chamber, which peripheral annular chamber has an upper end opening at said building outlet to form said air inlet and a lower end at which a lower opening is formed, and - by a connecting tube between said lower opening of said peripheral annular chamber and said first port of said wall protection plate.

According to another possible embodiment, said first orifice is formed in the upper part of the rear wall of said wall protection plate, said section of upstream duct extending through said back wall wall to be protected, for join said air inlet.

The invention also relates to a wall protection plate for a heating installation as defined above, which wall protection plate comprises an inner hollow space opening - through a first orifice in communication with the outside of said plate, and by a second orifice also in communication with the outside of said plate.

According to a particular embodiment, this wall protection plate is box-shaped comprising: a rear wall provided with an external face intended to come opposite said wall-mounting wall, and an inner face, a front wall provided with an external face intended to face said wood-burning appliance, and an inner face, and a peripheral wall, provided with an external face and an internal face, which internal faces of said rear, front and peripheral walls 10 delimit said internal hollow volume for the passage of combustion air. In a particular embodiment, the front wall and the rear wall of the wall plate extend parallel to each other. According to a first possible embodiment, the wall protection plate comprises a first orifice formed in the upper part of its front wall and a second orifice formed in the lower part of its front wall. According to another possible embodiment, the wall protection plate comprises a first orifice formed in the upper part of its rear wall and a second orifice formed in the lower part of its front wall. Said first and / or second orifices may comprise means that allow their adjustment in height, so as to facilitate the installation of the wall protection plate and allow its association with different types of wood-burning appliances. DETAILED DESCRIPTION OF THE INVENTION The invention will be further illustrated, without being limited in any way, by the following description, in conjunction with the accompanying drawings in which: FIG. 1 is a schematic, front view, of a first form possible embodiment of a heating installation according to the invention: - Figure 2 is a longitudinal sectional view along the section plane 2-2 of Figure 1; Figure 3 is a cross-sectional view taken along sectional plane 3-3 of Figure 2; FIG. 4 is a diagrammatic perspective view of the heating system of FIGS. 1 to 3; - Figure 5 is a schematic perspective view similar to Figure 4, with a cross section along the sectional plane 5-5 of Figure 4; FIG. 6 is a diagrammatic front view of a second possible embodiment of a heating installation according to the invention; - Figure 7 is a longitudinal sectional view along the section plane 7-7 of Figure 6; Fig. 8 is a cross-sectional view taken along sectional plane 8-8 of Fig. 7. The heating system 1 illustrated in Figs. 1 to 5 comprises a wood burning appliance 2 of the stove type. wherein the fire chamber 3 comprises: - an upper orifice 4 connected to a building outlet 5 via a duct 6 for the evacuation of combustion products, and - a lower orifice 7 intended for supplying air an oxidizer connected to an air inlet 8 by an air supply duct system 9. The wood heater 2 is positioned in front of a vertical wall-mounting wall M and is associated with a plate 10 for wall protection 10 which is placed against this wall wall M to protect the latter against the thermal radiation from the heater 2 and possibly the duct 6 for discharging the products of combustion. This combustion products evacuation duct 6 passes through a roof (not shown) to lead to the building exit 5, and possibly one or more intermediate floors (not shown). According to the present invention, the wall protection plate 10 constitutes a part of the duct system 9 supplying the combustion air supply of the heating device 2.

For this purpose, this wall protection plate 10 comprises a hollow internal volume 11 extending between a first orifice 12 in communication with the outside of said wall protection plate 10, and a second orifice 13, also in communication with the outside said wall protection plate 10.

In addition, the air supply duct system 9 comprises: an upstream duct section 91 interposed between the air inlet 8 and the first port 12 of the wall protection plate 10; and a section of downstream duct 92, interposed between the second orifice 13 of the wall protection plate 10 and the lower orifice 7 of the hearth 3 of the wood-burning appliance 5. In this way, the lower orifice 7 of the The furnace 3 of the furnace 2 is supplied with air from outside the equipped building, via the upstream pipe section 91, the hollow volume 11 of the wall protection plate 10 and the downstream pipe section 92.

The orifices 12 and 13 preferably have a generally circular shape. The wall protection plate 10 is here in the form of a parallelepipedic box which is made by an assembly of stainless steel sheets delimited: by a rear wall provided with an outer face 171 and a face Internal 172, - by a front wall 18 provided with an outer face 181 and an inner face 182, and - by a peripheral wall 19 provided with an outer face 191 and an inner face 192.

The front 18 and rear 17 walls have an identical shape, here rectangular, and they extend parallel to each other. The peripheral wall 19 is in the form of a rectangular frame of constant thickness. The hollow internal volume 11 of the wall protection plate 10 is delimited here by the inner faces 172, 182 and 192 of the rear walls 17, front 18 and peripheral 19. The wall protection plate 10 is arranged vertically, the outer face 171 its rear wall 17 being pressed against the wall wall M, and the outer face 181 of its front wall 18 facing the rear portion of the wood heater 2. This wall plate 10 can be fixed by any suitable system to the wall wall M, for example by means of screws and dowels, or by gluing. By way of indication only, the wall protection plate 10 may have a width of between 80 and 120 cm, a height of between 120 and 160 cm and a thickness of about 5 cm. Its width and height are particularly adapted according to the dimensions of the heater 2. The first port 12 of the wall protection plate 10 is formed in the upper part of its front wall 18, and the upstream pipe section 91 consists of: - a peripheral tube 911 in which is housed the connecting duct 6 for the evacuation of the combustion products of the wood burning appliance 2, said connecting duct 6 and said peripheral tube 911 10 defining between them a peripheral annular chamber 20 which comprises (i) an upper end 201 opening at the building outlet 5 to form the air inlet 8 above, and (ii) a lower end 202 at which is formed a lower opening 21, preferably in the form of a circular orifice, and 15 - by a connection tube 912 between said lower opening 21 of said peripheral annular chamber 20 and a second The central connecting duct 6 is preferably thermally insulated, and may consist of two tubes (for example stainless steel), between which an insulation material is provided. ; while surrounding peripheral tube 911 may consist of a single stainless steel tube. Such an assembly, formed by the "triple-wall" duct 6, 911, with the associated building outlet 5, is described in document FR-2 976 050 25 mentioned above. The annular peripheral chamber 20 extends along a vertical axis from its upper end 201 to its lower end 202 located just above the woodburning heater 2. On its side, the connecting tube 912 consists of a tubular cylindrical section, for example made of stainless steel, of horizontal axis, which extends here just above the wood heating apparatus 2. For this, the first port 12 of the wall protection plate 10 and the lower opening 21 of the annular peripheral chamber 20 extend co-axially.

The air inlet 8 is formed here inside the building outlet 5 and is protected by the latter. The second port 13 of the wall protection plate 10 is formed in the lower part of its front wall 18; and the downstream duct section 92 is here constituted by a cylindrical elbow angle comprising: a tubular portion 921 having a vertical axis extending from the lower orifice 7 of the furnace hearth 3; wood heater 2, and - a tubular portion 922 of horizontal axis extending from the second port 13 of the wall protection plate 10.

This downstream pipe section 92 may be made of stainless steel. The presence of the wall protection plate 10 allows the heater 2 to be brought closer to the wall wall M of a distance of the order of 10 to 15 cm. The pipe sections 91 and 92 are particularly discrete.

In particular, the horizontal portion 922 of the downstream duct section 92 may be provided at a height adapted to facilitate the passage of a broom or vacuum cleaner. The combustion air is taken from the air inlet 8, passes through the annular peripheral chamber 20, then into the connection tube 912, into the hollow volume 11 of the wall protection plate 10 and into the section downstream duct 92, before supplying the hearth 3 with its lower opening 7. When the wood burning appliance 2 is in operation, the wall protection plate 10 is ventilated by air coming from outside. of the building, which promotes the dissipation of calories and provides effective protection of the wall wall M. A second embodiment of the heating system 1 according to the invention is illustrated in Figures 6 to 8. This second embodiment is distinguished from the first essentially by the fact that the combustion air is taken here just from the other side of the wall-mounting wall M. For the sake of simplification, the identical or similar structural elements The first embodiment of FIGS. 1 to 5 retain the same references.

Here there is a wood-burning appliance 2, with a firebox 3 provided with an upper orifice 4 connected to a building outlet (not shown) by a duct 6 for the evacuation of the products of combustion, and a lower inlet 7 for supplying combustion air, connected to an air inlet 8 'by an air supply duct system 9'. The heater 2 is positioned in front of a wall wall M, and is associated with a wall plate 10 '. This wall protection plate 10 'differs from the wall protection plate 10 described above in connection with FIGS. 1 to 5 in that its first orifice 12' is formed in its rear wall 17, and more specifically in the upper part of its rear wall 17, to allow its connection with the air inlet 8 'by means of a pipe section 91' consisting of a tubular wall penetration associated with an external grid 22.

The rest of the structure of the wall shield 10 'does not change with respect to the guard plate 10 described above. In particular, this wall protection plate 10 'is in the form of a hollow box whose internal hollow volume 11' is of generally parallelepipedal shape.

In its lower part, there is the second orifice 13 formed in its front wall 18, connected to the lower orifice 7 of the hearth 3 by the downstream pipe section 92. The combustion air is here taken from the inlet 8 ', passes through the tubular wall passage 91', through the hollow volume 11 'of the wall protection plate 10', then through the downstream pipe section 92 to join the lower orifice 7 of the firebox 3. This installation 1 has the same advantages as those presented above in connection with FIGS. 1 to 5. It will be noted that the connection duct 6 for the evacuation of the combustion products does not need to be surrounded by a peripheral tube to form an annular chamber, and this part of the installation therefore has a simpler structure. It will also be generally appreciated that the wall protection plate 10, 10 'can take any external shape and have any desired decoration.

It can also include any size in width, height or thickness, depending on the type of heater to be equipped and the site of implantation. It may extend in particular over part of the height of the fitted room, or over the entire height of this room, from the floor 5 to the ceiling. First and second orifices 12, 12 '; 13 of the wall plate 10, 10 'may also be provided adjustable in height to facilitate the implantation of this plate on different types of sites, or in combination with different types of heaters.

To this end, oblong holes may be formed in the front walls 18 or rear 17, as appropriate, of the wall protection plate 10, 10 ', and may each be associated with a sliding plate, adjustable in height, itself. provided with the orifice 12, 12 ', 13 intended to be connected to the upstream pipe sections 91, 91' and / or downstream 92.

These height adjustment means may consist of oblong slots (formed in the aforementioned sliding plate or in the wall 17 or 18 equipped), associated with screw / nut type locking systems for example. Suitable sealing means will be provided to close any openings related to the presence of these height adjustment means. It is also possible to provide for the presence of a closing system of the air supply duct 9, 9 ', in order to prevent the circulation of cold air coming from the outside during the shutdown phases of the appliance. .

Claims (11)

REVENDICATIONS1. Heating installation (1) comprising: - a wood-burning heater (2), such as a stove or insert, comprising a hearth chamber (3), at the top of which is provided an upper orifice (4) for the evacuation of the products of combustion, and at the bottom of which is provided a lower orifice (7) of combustion air inlet, - a building outlet (5), - a connecting pipe (6) interposed between said upper opening (4) of the hearth (3) of said wood burning appliance (2) and said building outlet (5), for evacuation of the combustion products generated by said wood burning appliance (2), - an air supply duct system (9, 9 ') interposed between an air inlet (8, 8') and said lower outlet (7) of the furnace (3) of said wood-burning appliance (2) for supplying combustion air to said wood burning appliance (2), and - a wall plate (10, 10 ') placed against or facing a wall wall (M) to be protected, in front of which wall wall (M) is positioned said wood heater (2), characterized in that said wall plate ( 10, 10 ') has an inner hollow space (11, 11') extending between a first port (12, 12 ') in communication with the outside of said wall shield (10, 10'), and a second orifice (13), also in communication with the outside of said wall protection plate (10, 10 '), and in that said air supply duct system (9, 9') comprises: - a section upstream conduit (91, 91 ') interposed between said air inlet (8, 8') and said first port (12, 12 ') of said wall shield (10, 10'), and - a section downstream conduit (92) interposed between said second port (13) of said wall shield (10, 10 ') and said lower port (7) of the hearth (3) of said booster heater is (2). 2. Heating system (1) according to claim 1, characterized in that said wall protection plate (10, 10 ') is box-shaped comprising: - a rear wall (17) provided with a face external device (171) intended to come opposite said wall-mounting wall (M), and an internal face (172); - a front wall (18) provided with an external face (181) intended to face said wood heater (2), and an inner face (182), and 5 - a peripheral wall (19), provided with an outer face (191) and an inner face (192), which inner faces ( 172, 182, 192) of said rear wall (17), front (18) and peripheral (19) define said hollow space (11, 11 ') for the passage of combustion air. 10 3. Heating apparatus (1) according to claim 2, characterized in that said first orifice (12, 12 ') is formed in the upper part of said wall protection plate (10, 10'), and in that said second port (13) is provided in the lower portion of the front wall (18) of said wall shield (10, 10 '). 15 4. Heating apparatus (1) according to claim 3, characterized in that said first orifice (12) is formed in the upper part of the front wall (18) of said wall protection plate (10), and in that said upstream duct section (91) consists of: - a peripheral tube (911) within which said connecting duct (6) is housed for evacuation of the combustion products of said wood-burning appliance (2) said connecting duct (6) and said peripheral tube (911) defining between them a peripheral annular chamber (20), which peripheral annular chamber (20) has an upper end (201) opening at said building outlet (5). ), to constitute said air inlet (8), and a lower end (202) at which a lower opening (21) is formed, and - by a connection tube (912) between said lower opening (21) ) of said annular chamber said port (12) of said wall shield (10). 30 5. Heating apparatus (1) according to claim 3, characterized in that said first orifice (12 ') is formed in the upper part of the rear wall (17) of said wall protection plate (10'), said section of upstream duct (91 ') extending through said wall wall (M) to be protected, to join said air inlet (8'). 3028921 14 6. A wall protection plate (10, 10 ') for a heating installation (1) according to any one of claims 1 to 5, wherein said wall plate (10, 10') has an internal hollow space (11). 11 ') opening - through a first port (12, 12') in communication with the outside of said wall shield (10, 10 ') and - through a second port (13) also in communication with the outside of said wall shield (10, 10 '). 7.- wall protection plate (10, 10 ') according to claim 6, characterized in thatetetttn box-shaped having 10 - a rear wall (17) provided with an outer face (171) intended to come opposite of said back wall wall (M), and an inner face (172), - a front wall (18) provided with an outer face (181) intended to face said wood heating appliance (2), and an inner face (182), and - a peripheral wall (19), provided with an outer face (191) and an inner face (192), which internal faces (172, 182, 192) of said rear walls (17), before (18) and peripheral (19) define said internal hollow space (11, 11 ') for the passage of combustion air. 8.- wall protection plate (10, 10 ') according to claim 7, characterized in that it comprises a front wall (18) and a rear wall (17) parallel to each other. 9. A wall protection plate (10) according to any one of claims 7 or 8, characterized in that it comprises a first orifice (12) formed in the upper part of its front wall (18) and a second 25 orifice (13) formed in the lower part of its front wall (18). 10.- wall protection plate (10 ') according to any one of claims 7 or 8, characterized in that it comprises a first orifice (12') formed in the upper part of its rear wall (17) and a second orifice (13) formed in the lower part of its front wall (18). 30 11. A wall protection plate (10, 10 ') according to any one of claims 6 to 10, characterized in that said first orifice (12, 12') and / or said second orifice (13) comprises (nt) means that allow its / their height adjustment.