BE1019911A3 - SEALING DEVICE. - Google Patents

Abstract

The present invention relates to a sealing device with a seal (5) between a fixed part flanking an opening on an inner space and a moving part opposite said opening, said movable part comprising a part (2) and means for translational sliding of said wall (2) for opening access to the opening, characterized in that the sealing device comprises deformation means of the seal (5) for be activated only when the opening is obstructed, thus avoiding the friction of the seal (5) against the fixed part or against the moving part when the wall (2) slides.

Description

SEALING DEVICE Object of the invention

The present invention relates to a sealing device. It relates more particularly to a fireplace type stove or insert, particularly solid fuel such as wood or gas, including such a sealing device.

State of the art

To allow the control and optimization of combustion in a room, it is necessary to control the amount of air entering it. This generally leads to minimizing the leaks encountered in the combustion chamber and in particular those encountered around the access door to the latter.

In the case of combustion chambers, the high temperatures generally encountered require most of the time, the use of fibrous joints resistant to heat but whose seal is not absolute and which require a significant compressive force to limit leaks. On the other hand, in addition to their relative permeability, these seals tend to harden and stiffen under the effect of heat and thus to lose sealing efficiency.

The need to apply a significant force on the joints in order to meet the tightness is sometimes a great disadvantage during the development of door mechanisms whose desire to limit the opening effort and closure.

In the case of doors whose opening and closing are the result of a translation, sealing in the closed position induces a permanent friction of the seal during the translation and, by the same, an early wear of that and also increases the force required to overcome friction during closing.

[0006] Patent EP 1 445 541 B1 discloses a multifunctional hearth comprising a door that can slide in a translational movement. The door in the locked position is sealed against the combustion chamber by a seal. The fixed part of the hearth on which the door is slid has an exhaust to reduce the friction of the seal on the fixed part when moving the sliding door to an open position.

US Patent 7,121,042 B2 discloses a door assembly for sealing an opening to a chamber. The door slides in a vertical and horizontal movement to avoid friction between the seal and the door when the latter is being opened or closed.

Goals of 11 invention

The present invention aims to. to provide a solution that makes it possible to overcome the disadvantages of the state of the art.

The present invention is more particularly to achieve a sealing device avoiding any collapse of the seal during the pure translation of the door.

The present invention further aims to provide a sealing device does not require a significant compression force of the seal to ensure perfect sealing.

The present invention thus aims to achieve a focus comprising a sealing device ensuring a perfect seal between the combustion chamber and the surrounding room, and resistant to high temperatures.

Main characteristic elements of the invention

The present invention relates to a sealing device using a seal between a fixed portion enclosing an opening on an inner space and a movable portion vis-à-vis said opening, said movable part comprising a wall and means for translational sliding of said wall for opening access to the opening, characterized in that the sealing device comprises gasket deformation means intended to be activated only when the opening is obstructed , thus avoiding the friction of the seal against the fixed part or against the moving part when the wall slides.

According to particular embodiments of the invention, the sealing device comprises at least one or a suitable combination of the following characteristics: - la. mobile part is further pivotally mounted about a horizontal or vertical axis .; - said deformation means are configured to compress at least a portion of the seal, said compressed portion sealing between the fixed portion and the movable portion; - said deformation means are configured to cause swelling of at least a portion of the seal, said inflated portion providing sealing between the fixed portion and the movable portion; the seal is disposed either on the periphery of the movable part opposite the opening or on the periphery of the fixed part flanking the opening and is intended at least partly to bear respectively on the fixed part or on the moving part when the opening is obstructed; the deformation means comprise: an applicator frame fixed around the perimeter of the fixed part surrounding the opening and intended to compress at least a part of the section of the joint, two pairs of pivots, each of the pairs being respectively integral with a vertical edge of the applicator frame, and two connecting rods, each of the connecting rods being articulated at its respective ends to a pivot of one of said pairs; the top of each of the connecting rods being configured to jointly and respectively bear on a stop integral with a vertical edge of the wall and disposed on the face of the movable part opposite the fixed part; - The seal is flexible, impervious to air and returns to its original shape after deformation; - The seal has on its section a first portion being fixed in a holding frame and a second portion intended to be compressed by the applicator frame; the second part is of tubular form; - A first portion of the seal section is intended to be compressed by said deformation means causing swelling of a second portion of the seal section; - The fixed part is the frame of a door to a combustion chamber, said access door forming the movable portion within which the wall slides; thermal insulators are disposed between inner surfaces of the combustion chamber and / or between an inner surface of the combustion chamber and the holding frame to limit the heating of the gasket; the sliding means of the wall, a housing of the gasket, the deformation means of the gasket and the thermal insulators are hidden behind an outer frame of the mobile part; - The seal is high temperature silicone; - an inner lining of the combustion chamber and the outer frame form a continuous line only interrupted by the wall; - The sliding wall is a window.

The present invention also relates to a fireplace comprising a sealing device as described above. :

Brief description of the figures

Figure 1 shows a schematic view of the lines defining the combustion chamber with an outer frame according to the invention.

Figure.2 shows an elevational view of the frame of the access door to the combustion chamber according to the invention.

Figure 3 shows, according to the invention, a partial view in horizontal section of the fireplace when the applicator frame does not deform the seal.

Figure 4 shows, according to the invention, a partial horizontal sectional view of the fireplace when the applicator frame deforms the seal on the glass.

Figure 5 shows a side view of the leaf and the frame of the access door provided with a sealing device according to the invention, when the access door, including the window> is in position closed.

Figure 6 shows the upper part of Figure 5 with the arrows indicating the movement of the connecting rod and the parts driven by the connecting rod.

Figure 7 shows a side view and the upper part of the leaf and the frame of the access door provided with a sealing device according to the invention, when the window is in the open position. The arrows indicate the movement of the window, the connecting rod and the parts actuated by the latter.

Figure 8 shows a side view and the upper part of the leaf and the frame of the access door provided with a sealing device according to the invention, when the door is in the open position. The arrows indicate the movement of the door, the connecting rod and the parts actuated by the latter.

Legend: (1) Fireplace (2) Wall, and more precisely, glass (3) Interior lining of the combustion chamber (4) Outer frame (5) Gasket (6) Gasket retaining frame (7) Applicator frame (8) ) Glass translation slide (9) Thermal insulation (10) First part of gasket (11) Second part of gasket (12) Third part of gasket (13) Connecting rod (14) Pivot crank (15) Fixing (16) Stop

Detailed description of the invention

The present invention relates to a sealing device ensuring a perfect seal between an access door to an interior space and the surrounding environment. The sealing device of the present invention is advantageously used when the access door comprises a sliding wall in a translational movement within the access door, the latter can further and optionally pivot about a horizontal axis or vertical.

The present invention will be, by way of non-limiting example, illustrated for a home but the present invention extends to any area where it is necessary to ensure the seal between an interior space and the surrounding environment.

Still by way of example, the present invention is illustrated for a built-in fireplace having a design such that the profile formed by the inner and outer flanks of the combustion chamber is continuous with the sole exception of where. is the wall. Such fireplace designs 1 are illustrated in Figure 1 showing the wall which can be a window 2, the inner lining of the combustion chamber 3 and the outer frame 4. The window slid behind the masonry in a translational movement and thus gives access to the combustion chamber. The present invention also extends to non-recessed fires as well as foci where there is no continuity of lines between the inside and the outside of the combustion chamber. Examples of fireplaces for which the sealing device according to the invention is applicable are presented in patent EP 1 445 541 B1.

The sealing device according to the invention comprises a seal permanently attached and sealed either on the opening of the access door, or on its frame. It further comprises a mechanism adapted and activated by the closing movement (or by any other means) of the access door to the combustion chamber. When closing the door, the mechanism, which will be called "deformation means", deforms the seal and apply it to the frame or the opening of the door as it is respectively fixed on the door. opening or on the frame. When the door is opened by tilting or when sliding the wall to an open position, the deactivation of the application mechanism releases the seal which ensures its return to its initial position (ie not applied ). It should be noted that the seal being sealed, the deformation means can use the effect of swelling and deflation of the seal to respectively ensure the application and release of the latter. The seal can be inflated mechanically, either by compressing a portion of the seal causing the swelling of the peripheral portion of the seal ensuring the seal, or by crushing a piston generating the same swelling via the injection of air within the joint. In the invention, it is thus possible to distinguish the deformation means which are configured to compress at least a part of the seal and where it is the compressed part which seals between the fixed part and the mobile part, and the deformation means. which are configured to cause swelling of at least a portion of the seal and where it is the inflated portion which seals between the fixed portion and the movable portion.

The seal according to the invention has several properties required for 1 · application and must also be disposed within the home so as to reduce its heating and related problems (expansion, loss of properties). It is flexible, resumes its original shape in the absence of deformation (remanence) and is impervious to air even in the absence of crushing. It is thus preferentially chosen in high temperature silicone material to meet the aforementioned criteria.

The seal is likely to lengthen strongly with heat. Accordingly, the sealing device according to the invention comprises a seal holding system to overcome this disadvantage while preserving the tightness of the device. In FIG. 2, it is possible to visualize the gasket 5 fixed on the periphery of the combustion chamber all around the frame of the door frame and the system for holding the gasket constituted by a frame 6. When it is put in place (at cold), the seal is possibly subjected to a prestress in order to lengthen it with a length equivalent to that resulting from the thermal expansion and, this, in order to avoid any risk of. uncontrolled deformation during hot use. In order to reduce the heating of the seal and the resulting loss of properties, the seal is preferably set back from the periphery of the combustion chamber in order to avoid direct radiation. It will be seen later that additional measures can also be taken to reduce its heating.

Figures 3 and 4 show a portion of the hearth comprising the sealing device according to one embodiment of the invention wherein the deformation means are configured to compress a portion of the seal and, more particularly, the section of the seal. Figures 5 to 8 show in detail these deformation means and their operation.

The hearth 1 comprises the combustion chamber and its interior lining 3, an access door comprising an outer frame 4 and a window 2, the deformation means of the seal 5 provided with an applicator frame 7, a frame of maintaining the seal 6, a translation slide of the window 8 and thermal insulators 9 disposed between the hot inner surfaces of the combustion chamber and / or between an inner surface of the combustion chamber and the seal holding frame in order to create a barrier to heat conduction and thereby reduce heating of the joint. According to the present invention, the outer frame 4 is preferably arranged so as to conceal the space required in particular for the housing of the gasket, the deformation means of the gasket and thermal insulators always in the spirit of ensuring the continuity of the lines between the internal lining of the combustion chamber and the outside of the combustion chamber.

The support frame 6 of the seal must have a profile adapted to the profile of the seal section so as to insert a first portion 10 of the seal while allowing the latter to slide in the frame during its expansion. A second portion 11 of the seal must remain free in order to be deformed by the applicator frame 7. In the example of Figures 3 and 4, the holding frame 6 comprises a U-shaped section whose opening welcomes the first part 10 of the joint.

The seal must be drawn in a profile ensuring perfect contact between the door (or the door frame) and the seal when the application mechanism is active and allowing it to return to its original position (not applied) when the enforcement mechanism is not active. Preferably, the gasket 5 comprises on its section the first part 10 mentioned above which can take any form suitable for its attachment in the frame. The seal 5 comprises following the first part the second portion 11 which is preferably of tubular shape to prevent its deformation at high temperature and on which the applicator frame 7 comes to rest. The seal may further after the second portion have a third portion 12 in the form of tab whose plane is substantially parallel to that of the window and which adheres to the latter when the door and the window are in the closed position.

As shown in detail in Figures 5 to 8 and, more generally, in Figure 2, the deformation means comprise the applicator frame 7 disposed on the periphery of the frame of the door, two actuating rods. 13 of this applicator frame each arranged on the vertical edges of the frame (only one visible on the profile views). Each connecting rod 13 is articulated at its two ends on a bent pivot 14. A first end of the bent pivot 14 is thus articulated on the rod 13 while the second end is secured to the applicator frame 7. The pivot axis of the pivot is hinged on a fixing 15 to the door frame. The access door has on each of the vertical edges of its inner face, i.e. its face facing the combustion chamber, a stop 16 (adjustable) integral with the window 2. When the access door (window + outer frame) and the window are both in the closed position as shown in FIGS. and 6, the top of the connecting rod 13 is supported on the stop 16. Thus, the connecting rod 13 is pushed downwards and causes in its stroke the pivots 14 which pivot in the direction of clockwise and thus come press the applicator frame 7 against the seal to seal. When the window 2 slides, upwards in the example illustrated in FIG. 7, to allow access to the combustion chamber, the stop 16 follows the movement of the window thus allowing the connecting rod 13 to go back to its maximum upper position (limited by the pivots abutting on the frame). For this purpose, the device may be provided with a rod return system. Thus, the applicator frame no longer applies to the seal and the window is thus free to move without friction with the seal. Similarly, in case of opening by tilting of the access door comprising the window 2 and the outer frame 4, as shown in Figure 8, the seal is also released. Thus, according to the invention, the deformation means are only activated when the opening towards the combustion chamber is obstructed.

The present invention extends to any variant of the application mechanism as described above whose object is its activation when the opening is obstructed.

Advantage of the device

The perfect seal of the seal allows control of combustion in the home.

The perfect seal of the seal offers the possibility of achieving fireplaces perfectly sealed relative to the room in which they are placed. This allows in particular to meet the increased requirements related to the installation in passive houses, so very tight.

In the case of walls whose opening and closing are the result of a translation, the mechanism allows a pure translation of the wall while ensuring sealing in the closed position. The absence of friction with a seal during the translational movement and the low application force necessary for the application of the seal reduce both the force required for this translation and the wear of the seal.

The pure translation of the wall makes it possible to limit the thickness of the sliding slot of the window to its bare minimum, that is to say the thickness of the window and the manufacturing tolerances, which guarantees the effect of continuity between the inside and the outside of the room for homes with this type of design.

The erasure of amounts, for example oblique or curved, placed in the. The visual field of the combustion chamber makes it possible to limit the direct radiation of the flames on the internal faces of the frame and, thereby, to reduce the heating of the seal.

Claims (17)

1. Sealing device with a seal (5) between a fixed part flanking an opening on an inner space and a moving part vis-à-vis said opening, said movable part having a wall (2 ) and means for translational sliding of said wall (2) for opening access to the opening, characterized in that the sealing device comprises deformation means of the seal (5) to be activated only when the opening is obstructed, thus avoiding the friction of the seal (5) against the fixed part or against the moving part when the wall (2) slides. 2. Device according to claim 1, characterized in that the movable portion is further pivotally mounted about a horizontal or vertical axis. 3. Device according to claim 1 or 2, characterized in that said deformation means are configured to compress at least a portion of the seal, said compressed portion ensuring the seal between the fixed part and the movable part. 4. Device according to claim 1 or 2, characterized in that said deformation means are configured to cause swelling of at least a portion of the seal, said inflated portion ensuring the seal between the fixed part and the movable part. 5. Device according to any one of the preceding claims, characterized in that the seal (5) is disposed either on the periphery of the movable part vis-à-vis the opening or on the periphery of the fixed part framing the opening and is intended at least partly to abut respectively on the fixed part or on the movable part when the opening is obstructed. 6. Device according to claim 3, characterized in that the deformation means comprise - an applicator frame (7) fixed on the periphery of the fixed part flanking the opening and intended to compress at least a portion of the joint section ( 5), - two pairs of pivots (14), each of the pairs being respectively secured to a vertical edge of the applicator frame (7), and two connecting rods (13), each of the connecting rods being articulated at its respective ends to a pivot (14) one of said pairs; the top of each of the connecting rods (13) being configured to jointly and respectively bear on a stop (16) integral with a vertical edge of the wall (2) and disposed on the face of the movable part facing the fixed part . 7. Device according to any one of the preceding claims, characterized in that the seal (5) is flexible, impervious to air and returns to its original shape after deformation. 8. Device according to claim 6, characterized in that the seal (5) has on its section a first portion (10) to be fixed in a holding frame (6) and a second portion (11) intended to be compressed by the applicator frame (7). 9. Device according to claim 8, characterized in that the second portion (11) is of tubular form. 10. Device according to claim 4, characterized in that a first portion of the seal section is intended to be compressed by said means. deformation causing swelling of a second part of the joint section. 11. Device according to any one of the preceding claims, characterized in that the fixed part is the frame of a door to access a combustion chamber, said access door forming the movable part in which the wall (2) slide. Device according to claim 11, characterized in that thermal insulators (9) are arranged between inner surfaces of the combustion chamber and / or between an inner surface of the combustion chamber and the support frame (6) for limit the heating of the seal (5). 13. Device according to claim 12, characterized in that the sliding means of the wall, a housing of the seal (5), the deformation means of the seal (5) and the thermal insulators (9) are hidden behind an outer frame (4) of the moving part. 14. Device according to any one of the preceding claims, characterized in that the seal (5) is high silicone, e temperature. 15. Device according to claim 13, characterized in that an inner lining (3) of the combustion chamber and the outer frame (4) form a continuous line interrupted only by the wall (2). 16. Device according to any one of the preceding claims, characterized in that the sliding wall (2) is.a pane. 17. Fireplace with one. sealing device according to one of Claims 1 to 16.