FR3021732A1 - TRAPPER SYSTEM FOR SMOKE EXHAUST DUCT OR SIMILAR - Google Patents

Abstract

The hatch system (1) according to the present invention comprises - an opening (6) formed in the wall (2 ') of said duct (2), delimited by a peripheral edge, and - a closure wall (13) for the l removable closure of said opening (6). According to the invention, this closure wall (13) is separable from said wall (2 ') of conduit (2) and comprises a support structure (24) formed near a portion of its peripheral edge and the side of its inner face (19), adapted to form a hinge with a complementary abutment stop (25) formed in the inner volume I) of said duct (2), fixed against the inner face (5) of the latter. This closing wall (13) further comprises a removable locking means (26) for cooperating with an abutment means (27) fixed against the inner face of the duct (5).

Description

TECHNICAL FIELD TO WHICH THE INVENTION RELATES The present invention relates to the general field of fumistery. It relates more particularly to a trap system for smoke evacuation conduit or the like.

BACKGROUND TECHNOLOGY Circular section conduits, especially for the evacuation of fumes from a fireplace, stove or boiler, sometimes include a trap system to access their internal volume, for example to allow an operator to maintain an internal structure, to sweep the pipe, or to remove the ashes. These trap systems have an opening in the duct, associated with a wall for the removable closure of this opening.

The opening in the duct is delimited by a peripheral edge of generally square or rectangular shape, having two straight sides parallel to the longitudinal axis of the duct, and two parallel sides in the form of a circular arc. The closure wall has a shape complementary to that of this opening. In a similar manner, it is delimited by a peripheral edge of generally square or rectangular shape comprising two parallel straight sides and two parallel sides in the shape of a circular arc. This shutter wall is slightly oversized relative to the associated opening.

A straight side of the peripheral edge of the closure wall is assembled with a straight side of the peripheral edge of the duct opening by means of a hinge system; the other straight sides of the closure wall and the duct opening, comprise means for their removable locking in the closed wall position.

Joint structures possibly make it possible to seal the trap system in the closed closure wall position. Conventional hinge systems consist of hingedly coupled members which are permanently fixed permanently to the duct and the closure wall, generally by welding.

However, trap systems known to date are relatively bulky since they require a large free space on the periphery of the duct equipped for the opening and closing of the closure wall.

On the other hand, they are not always very aesthetic because of the visible presence of the hinge system. In addition, factory mounting to the right or left of the hinge system does not always match the optimal assembly depending on the site equipped.

OBJECT OF THE INVENTION The object of the present invention is to overcome these disadvantages. For this purpose, the invention proposes a trap system for a smoke evacuation duct or the like, which duct, delimited by a wall, comprises a longitudinal axis, an inner face delimiting its internal volume, and an outer face, which system hatch comprises - an opening in the wall of said duct, delimited by a peripheral edge, and - a closure wall, for the removable closure of said opening, which closing wall is delimited by a peripheral edge, and comprises an inner face, intended to be oriented towards the internal volume of said duct when said wall is in the closed position of said opening, and an opposite outer face; this trap system further comprises means for the removable locking of said closure wall on said opening. And in accordance with the present invention, said closure wall is detachable from the wall of said duct, which closure wall comprises a support structure, formed near a portion of its peripheral edge and the side of its face. interior, adapted to form a hinge with a complementary abutment stop formed in the internal volume of said duct, fixed against the inner face of the latter; and which closing wall 30 also comprises at least one removable locking means arranged in proximity to another part of its peripheral edge and intended to cooperate with an abutment means formed by a part of said inner face of said duct, or by an attached member fixed against said inner face of conduit.

3021732 3 A structure is obtained without visible hinge whose aesthetic is improved over the existing. The releasable nature of the closure wall makes it possible to limit the space requirement when opening and hindering access. It also makes it possible to make the closure wall reversible in order to position the removable locking means on the right or on the left, according to the dimensions of the site equipped, so as to facilitate maneuvering. Preferably, the closure wall is of generally identical shape to that of the associated opening, but oversized relative thereto; and the peripheral edge of said opening comprises a seal for sealing said trap system, in the closed position of said closure wall. According to a preferred embodiment, the section of the duct 15 perpendicular to its longitudinal axis is circular; the peripheral edge of said opening is of square or rectangular shape having two straight sides parallel to said longitudinal axis, and two parallel sides in the form of a circular arc; on the other hand, the closure wall has a generally square or rectangular shape, its peripheral edge 20 having two straight sides parallel to each other and two parallel sides in the form of a circular arc; in addition, said complementary abutment abutment is provided on one of said rectilinear sides of said aperture, and said abutment means is provided on the other of said rectilinear sides of said aperture.

According to another feature, the support structure of the closure wall consists of at least one hook, and preferably at least two hooks arranged at a distance from one another, provided (each) with a support border in an arc. In this context, said arcuate bearing edge is advantageously centered on an axis extending between said arcuate bearing edge and the peripheral edge facing the closure wall. Still in this context, said one or more hooks are preferably formed at the end of a reinforcing member attached against the inner face of the closure wall.

In a preferred manner, the trap system comprises at least two reinforcing members each provided with an end hook, which reinforcing members are each in the form of a plate whose plane extends perpendicularly to the inner face of the closure wall 5, which plates extend parallel to each other. Each platinum-shaped reinforcing member preferably comprises at least one one-piece tab at the angle, for its fixing by welding against the internal face of the closure wall. According to yet another feature, the complementary bearing abutment 10 of the conduit is in the form of a journal whose section is circular or substantially circular. Then, the two hooks formed at the end of the reinforcing members cooperate with the outer surface of the support pin to form the closure hinge of the closure wall.

According to yet another feature, the removable locking means of the closure wall consists of a rotary latch lock, the end of said rotary latch being able to bear against said abutment means of the inner face of the duct. Still according to another particularity, the complementary abutment abutment and the abutment means have identical or similar structures and are formed on two opposite sides of said opening, to allow a reversible mounting of said closure wall. The complementary abutment abutment and the abutment means are then preferably each constituted by a journal of circular or substantially circular section, which journals are secured to the inner face of said conduit parallel to one another, along on two opposite sides of said opening. DETAILED DESCRIPTION OF AN EMBODIMENT The invention will be further illustrated without being in any way limited by the following description of a particular embodiment, given by way of example only and shown in the accompanying drawings, in which: - Figure 1 is a perspective view of a duct section equipped with a trap system according to the present invention, the shutter wall of this door being here in the closed position; FIG. 2 is a side view of the duct section illustrated in FIG. 1, showing the trap system seen from the front; - Figure 3 is a side view of the duct section shown in Figures 1 and 2, showing the trap system seen from the side; - Figure 4 is a sectional view along the axial sectional plane 4-4 of Figure 3, showing the trap system seen from the front and the inside of the duct; - Figure 5 is a sectional view of the duct section shown in Figures 1 to 4, according to the sectional plane 5-5 of Figure 2; - Figure 6 is a sectional view similar to Figure 5, the shutter wall of the trap system being here shown partially open; FIG. 7 shows the shutter wall of the hatch system equipping the duct section of FIGS. 1 to 4, seen in isolation and on the outside face; - Figure 8 is a slight perspective view of the closure wall shown in Figure 7, seen from the side of its inner face; Figure 9 is a side view of the closure wall shown in Figures 7 and 8; FIG. 10 is a view from above of the closure wall illustrated in FIGS. 7 to 9. The trap system 1 illustrated in the figures is provided for a duct 2, in particular a smoke evacuation duct or optionally a combustion air supply duct and exhaust concentric combustion products. This type of trap system 1 is used to allow an operator to access the interior volume of the duct 2, for example to allow this operator to sweep and / or discharge the ashes. The duct 2 illustrated in Figures 1 to 6 here consists of a cylinder section, longitudinal axis L, defined by a cylindrical wall 2 '. Its cross section to the L axis is constant or substantially constant; its two ends 2a and 2b here comprise means adapted for the interlocking of complementary sections of conduits; In Figures 1 to 3021732 6 4 note that the conduit 2 has an orifice 3 in particular for integrating the horizontal portion of a tee providing connection to a stove type heater or boiler for example. The wall 2 'of the duct 2 is formed here of a single material thickness (for example metal such as stainless steel or galvanized steel), but this wall could also be made differently and consist for example of a double wall of material enclosing an insulation. The wall 2 'delimiting the conduit 2 has an outer face 4, accessible from the outside, and an inner face 5 which delimits its inner volume I. The trap system 1 comprises: - an opening 6 formed in the wall 2' duct 2; this opening 6 is delimited by a peripheral edge 7, here of polygonal shape square or rectangular, having two straight lateral sides 15 and 9 parallel to each other and parallel to the longitudinal axis L, and two parallel sides in the form of an arc of a circle, one upper 10 and the other lower 11; these two arcuate sides 10 and 11 each extend in a plane transverse to the longitudinal axis L; and a closure wall 13 (shown in isolation in FIGS. 7 to 10), for the removable closure of the opening 6. This closure wall 13 is delimited by a peripheral edge 14, here of a generally square shape or rectangular, having two rectilinear lateral sides 15 and 16, parallel to each other, and two parallel arc-shaped sides 17 and 18; it has an inner face 19 intended to be oriented towards the inner volume I of the duct 2 when the wall 13 is in the closed position of the opening 6, and an opposite outer face 20. The inner face 19 has a general shape in concave cylinder portion and the outer face 20 has a general shape convex cylinder portion.

The closure wall 13 is of generally identical shape to that of the opening 6, but it is slightly oversized with respect to this opening 6, so as to extend a few millimeters or a few centimeters around the entire periphery of the latter . The peripheral edge 7 of the opening 6 has an attached seal 35 (for example of the polymer seal type).

3021732 7 This seal 21 extends around the periphery of the peripheral edge 7. As can be seen in Figure 6, it comprises a U-shaped base 22 which allows its embedment on the peripheral edge 7, extended by a side lip 23. More specifically, the lateral lip 23 extends from the end of the lateral flange of the U-shaped base 22 which is located on the outside of the duct 2, and that at an angle, in a re-entrant manner. , that is to say in the direction of the opening 6, as can be seen in Figure 6. The trap system 1 according to the invention is original in that the closure wall 13 is completely separable of the wall 2 'of the duct 10 2, during its opening, that is to say during the release of the opening 6, the removable means being further provided to lock the wall 13 in the closed position of closure of this opening 6. For this, the closure wall 13 comprises a support structure 24 , arranged - near a portion of its peripheral edge 14, in this case along its rectilinear lateral side 15, and - on the side of its inner face 19, this support structure 24 being able to constitute a hinge with a complementary abutment stop 25, formed in the inner volume I of the conduit 2, fixed against the inner face 5 of the latter, in this case along the rectilinear lateral side 8 of the peripheral edge 7 of the opening 6. And this closure wall 13 further comprises at least one removable locking means 26, formed near another portion of its peripheral edge 14, in this case along its rectilinear lateral side 16 (opposite the side side 15 provided with the support structure 24), and which is intended to cooperate with an abutment means 27 formed by a portion of the inner face 5 of the conduit 2 or by an attached member, fixed against this inner face of leads 5 (here in this case, formed by an insert member 27 fixed against the inner face of the conduit 5). The support structure 24 of the closure wall 13 is formed by two hooks 28 formed at one end of two reinforcing members 29. Each of these reinforcement members 29 is in the general form of a plate 30 attached to the side of the inner face 19 of the wall 13. These two plates 30 have a general shape of flat crown portion; they are spaced from each other and extend parallel to each other, in planes perpendicular to the inner face of the closure wall 13, substantially over the entire width of this wall 13 The "outer" arcuate rim 31 of the plates 30 is secured by welding with the inner face 19 of the closure wall 13 by means of one-piece brackets 32 (here there are two per plate 30). ). As can be seen in Figures 8 and 9 in particular, the two reinforcing members 29 are provided at the upper and lower ends of the closure wall 13, one near its side in a circular arc. 17 and the other at its side in an arc 18. As mentioned above, one end of each of the plates 30 has a hook 28 to form the support structure 24. Each of these hooks 28 is provided with an arcuate bearing edge 33 oriented so that its center is positioned between said abutment rim 33 and the surrounding circumferential edge 14 of the closure wall 13 (in this case its rectilinear side 15). The arcuate bearing edges 33 of the two plates 30 are centered on the same axis. The detachable locking means provided along the rectilinear lateral side 16 of the closure wall 13 here consist of two latches 26 equipped with a rotary latch 34. The body of each latch 26 is fixed through specially adapted orifices. in the wall 13. An actuator 35 is accessible on the side of the outer face 25 of the wall 13 for the rotational operation of the rotary latch 34, by means of a suitable tool, for example a screwdriver. The axis of rotation 36 of the latch 34 extends perpendicularly or substantially perpendicularly to the wall 13. The latch 34 consists of a tab-shaped member which extends laterally perpendicularly or substantially perpendicularly to its axis of rotation 36. remote from the inner face 19 of the wall 13, opposite its rectilinear lateral side 16. This latch 34 is adapted to cooperate with the stop means 27 mentioned above, detailed below.

3021732 9 As can be seen in Figures 7 to 9, the closure wall 13 is here equipped with two latches 26 spaced apart from each other along the lateral side 16, arranged between the two reinforcing members 29 The complementary bearing abutment 25 formed along the lateral side 8 of the opening 6 consists of a cylindrical pin whose outer surface is intended to cooperate with the arcuate bearing edges 33 of the hooks 28. supra. The circular or substantially circular section of the journal 25 is complementary to that of said arcuate support edges 33 to obtain the desired hinge system. The journal 25 is in a tubular form whose axis extends parallel to the rectilinear lateral side 8 of the opening 6. This journal 25 is fixed in the inner volume I of the duct 2, in the immediate vicinity of said lateral side 8, this by welding, via tabs L-section 37 (here there are two of them). The stop means 27 formed along the lateral side 9 of the opening 6 consists of a cylindrical pin whose outer surface is intended to cooperate with the latches 34 of the locks 26. The pin 27 is in a tubular form with the axis extends parallel to the rectilinear lateral side 9 of the opening 6. This pin 27 is fixed in the internal volume I of the duct 2, in the immediate vicinity of said lateral side 9, by welding, via leg section L 38 (here two in number). The journal-shaped complementary bearing abutment 25 and the trunnion-shaped abutment means 27 have identical or similar structures, and they are adapted, together with the bearing structure 24 and the wall locking means 26. shutter 13, to allow a reversible mounting of this wall 13, that is to say to allow the cooperation of the support structure 24 with the trunnion 25 or the trunnion 27, and in the same way to allow the 30 of said locking means 26, with the trunnion 25 or the trunnion 27. Starting from an open hatch position 1, that is to say with its closing wall 1 completely separated from the duct 2 (and in FIG. particular of its opening 6), the operator positions the rectilinear side 15 of the closure wall 35 along the rectilinear side 8 of the opening 6, with the arcuate edges 33 of the hooks 28 coming into position. against the trunnion 25, as illustrated in FIG. 6. A hinge structure is thus obtained which allows the wall 13 to pivot about the corresponding hinge axis, so as to completely close off the opening 6, and to lock this closure by the operation of the locks 26 for The latching force of the hooks 28 and latches 34 is oriented towards the inner face of the rectilinear lateral sides of the peripheral edge of the opening 6, which makes it possible for the latches 34 to bear against the journal. optimize shutter characteristics. At the end of the closing maneuver, the peripheral edge of the inner face 19 of the wall 13 crushes the lip 23 opposite the peripheral seal 21 to obtain sealing of the closure. The opening of the hatch system 1 is obtained by reverse maneuvers, by unlocking the catches 34, by pivoting the wall 13 around its hinge system 24-25 over a small angular sector, and by completely separating the wall FIGS. 1 to 6 show the trap system 1 with its hinge structure positioned on the left side and with the right side lock. As mentioned above, because of its reversible nature, the shutter door can thus be mounted with its hinge structure on the right and its locking system on the left (the hooks 28 then cooperate with the pin 27, and the latches 34 cooperate with the pin 25). In this case, it is understood that the lower and upper sides in an arc 17 and 18 of the closure wall 13 are reversed. The direction of assembly (locking to the right or left) is chosen by the operator according to the peripheral size of the duct 2 equipped. A very discreet trap system is obtained, particularly because of the absence of a visible hinge, very simple to manufacture, which limits the gene during the opening and closing maneuvers, and which also has the advantage of being reversible.

Claims (14)

1.- A trap system (1) for duct (2) smoke evacuation or the like, which duct (2), delimited by a wall (2 '), comprises a longitudinal axis (L), an inner face (5) delimiting its internal volume (I), and an outer face (4), which trap system (1) comprises - an opening (6) formed in the wall (2 ') of said duct (2), delimited by a peripheral edge (7), and - a closure wall (13), for the removable sealing of said opening (6), which closing wall (13) is delimited by a peripheral edge (14), and comprises a inner face (19), intended to be oriented towards the internal volume (I) of said duct (2) when said wall (13) is in the closed position of said opening (6), and an opposite outer face (20), said hatch system (1) further comprising means (26, 27) for releasably locking said closure wall (13) to said opening (6), characterized in that said closure wall (13) is detachable from said wall (2 ') of conduit (2), which closure wall (13) comprises a support structure (24), arranged close to a part of its peripheral edge (14) and the side of its inner face (19), able to constitute a hinge with a complementary abutment stop (25) formed in the internal volume (I) of said duct (13), fixed against the inner face (5) of the latter, and which closing wall (13) further comprises at least one means (26) for removable locking, arranged near another part of its peripheral edge (14), and intended to cooperate with a stop means formed by a portion of said inner face (5) of said duct (2) or by an attached member (27) fixed against said inner duct face (5). 2. A trap system (1) according to claim 1, characterized in that said closure wall (13) is of generally identical shape to that of said opening (6), but oversized with respect to the latter, and the peripheral edge (7) of said opening (6) comprises a seal (21) for sealing said trap system (1) in the closed position of said closure wall (13). 3.- trap system (1) according to any one of claims 1 or 2, characterized in that the section of the conduit (2) perpendicular to its longitudinal axis (L) is circular, the peripheral edge (7) of said An opening (6) being of square or rectangular shape, having two straight sides (8, 9) parallel to said longitudinal axis (L) and two parallel sides (10, 11) in the shape of an arc of a circle, in that said closure wall (13) has a generally square or rectangular shape, its peripheral edge (14) having two straight sides (15, 16) parallel to each other and two parallel sides (17, 18) in the shape of an arc of a circle. , in that said complementary support abutment (25) is provided on one of said rectilinear sides (8, 9) of said opening (6) and in that said abutment means (27) is provided on the other said rectilinear sides (8, 9) of said opening (6). 10 4.- hatch system (1) according to any one of claims 1 to 3, characterized in that the bearing structure (24) of the closure wall (13) consists of at least one hook (28) provided with an arcuate support edge (33). 5. A trap system (1) according to claim 4, characterized in that the support structure (24) of the closure wall (13) consists of at least two hooks (28) arranged at a distance from the one of the other, each provided with a support border in an arc (33). 6. A trap system (1) according to any one of claims 4 or 5, characterized in that said arcuate bearing edge (33) is centered on an axis extending between said border of support in an arc (33) and the peripheral edge (14) opposite the closure wall (13). 7. A hatch system (1) according to any one of claims 4 or 6, characterized in that said one or more hooks (28) are formed at the end of a reinforcing member (29) reported against the face interior (19) of the closure wall (13). 8. A trap system (1) according to claim 7, characterized in that it comprises at least two reinforcing members (29) each provided with an end hook (28), which reinforcement members (29) are each in the form of a plate (30) whose plane extends perpendicularly to the inner face of said closure wall (13), said plates (30) extending parallel to each other; other. 9. A trap system (1) according to claim 8, characterized in that each reinforcing member (29) in the form of platinum (30) comprises at least one one-piece tab bracket (32), for its fixing by welding 35 against the inner face of said closure wall (13). 3021732 13 10. A trap system (1) according to any one of claims 1 to 9, characterized in that the complementary bearing abutment (25) of said conduit (2) is in the form of a journal whose section is circular or substantially circular. 5 11. A trap system (1) according to claims 5 and 10, taken in combination, characterized in that the two hooks (28) formed at the end of the reinforcing members (29) cooperate with the outer surface of the trunnion. support (25) for constituting the closing hinge of the closure wall (13). 10 12. A trap system (1) according to any one of claims 1 to 11, characterized in that said means for releasably locking the closure wall (13) consists of a latch (26) with a rotary latch (34). ), the end of said rotary latch (34) being able to bear against said abutment means (27) of the inner face (5) of the duct (2). 15 13. A trap system (1) according to any one of claims 1 to 12, characterized in that the complementary abutment stop (25) and the abutment means (27) have identical or similar structures and are arranged on two opposite sides (8, 9) of said opening (6), to allow a reversible mounting of said closure wall (13). 20 14. A trap system (1) according to claim 13, characterized in that said complementary bearing abutment (25) and said abutment means (27) are each constituted by a trunnion of circular or substantially circular section, which trunnions (25, 27) are secured to the inner face (5) of said duct (2) parallel to each other, along two opposite sides (8, 9) of said opening 6).