Ventilation box, associated installation and installation method

Abstract

A ventilation unit (14) comprising: an outer casing (22), the outer casing (22) comprising an inner face (28) defining an inner compartment (30) of the ventilation unit, and the outer casing (22) comprising an external opening (34) for fluidly connecting the inner compartment (30) with an exterior (32) of the ventilation unit (14); and at least one removable accessory (24, 26) configured to fit the external opening (34). According to the invention, the at least one removable accessory (24, 26) is held against the inner face (28) when fitted to the external opening (34), so that it can be removed from the external opening (34) from the inner compartment (30).

Description

[0001] The present invention relates to a ventilation box comprising: an outer casing, the outer casing comprising an inner face delimiting an inner compartment of the ventilation box and the outer casing comprising an external opening, for fluidly connecting the inner compartment with an exterior of the ventilation box; and at least one removable accessory, configured to equip the external opening.

[0002] In the field of ventilation units, it is common practice to equip an external opening of a ventilation unit with a removable air inlet, featuring a protruding neck. This allows for a seamless connection between the external opening and an opening in a building wall, ensuring air circulation between the inside of the unit and the outside of the building via the external opening. The air inlet is removable so that it can be replaced, if necessary, with a removable damper to close the external opening when not in use, thus adapting the unit to the specific situation. Generally, the ventilation unit is delivered with the external opening already equipped with one of these removable accessories, either the air inlet or the damper. Typically, the removable accessory is positioned on the external face of the ventilation unit.When the outside opening is fitted with the tapping, the tapping is installed with the collar protruding outwards, so that it can be directly connected to the building opening, by passing through that opening.

[0003] For the installation of the ventilation unit within the building, the unit is installed with the removable accessory already mounted on it. Indeed, once the unit is installed, it is generally not possible to access the removable accessory, which is often sandwiched between the building wall and the outer casing of the unit, particularly in the case of an air inlet. In other words, once the unit is installed, it is generally not possible to remove the removable accessory, for example, to replace the inlet with a damper. Furthermore, because the removable accessory protrudes from the ventilation unit, especially if it is an inlet, it tends to be damaged during transport of the ventilation unit between the production site and the installation site, or during installation itself. Moreover, installing the unit with a pre-mounted inlet can be complex.Indeed, while the ventilation unit is particularly bulky, it is advisable to position the ventilation unit as a single unit, taking care to ensure that the neck of the spigot is correctly positioned through the opening in the wall or ceiling.

[0004] Ventilation boxes are shown in documents US 2021 / 302033 A1 and KR 200 468 966 Y1.

[0005] One of the aims of the invention is therefore to provide a ventilation unit whose installation is facilitated, whose configuration can be modified while the ventilation unit is already installed and for which the risks of damage are limited.

[0006] For this purpose, the invention relates to a ventilation box according to claim 1.

[0007] Providing for the removable accessory(ies), which preferably include at least one spigot and at least one damper, to be removable from the interior compartment ensures that, even when the outer casing is fixed to the building against a wall, the removable accessory can be removed from the external opening and / or repositioned on the external opening via the interior compartment. This also implies that the ventilation unit can be installed even if the removable accessory is not yet fitted to the external opening, or if another removable accessory is fitted to this external opening. The desired removable accessory can then be added by positioning it on the external opening from the interior compartment, while the ventilation unit is already positioned relative to the building wall.

[0008] According to particular embodiments, the ventilation box conforms to one of the annexed claims 2 to 5.

[0009] The invention further relates to a ventilation installation according to the attached claim 6.

[0010] Preferably, the installation conforms to the attached claim 7.

[0011] The invention further relates to an installation method according to the attached claim 8.

[0012] According to particular embodiments, the installation method conforms to one of the annexed claims 9 to 12.

[0013] Other features and advantages of the invention will become apparent from the following description of embodiments of the invention, given by way of example only and with reference to the drawings which are: [ Fig 1] Figure 1, a schematic perspective representation of a ventilation unit according to the invention comprising removable accessories; [ Fig 2] Figure 2 , a schematic cross-sectional representation, along a cutting plane passing through a removable accessory being a branch connection, of a ventilation system including the ventilation unit of the figure 1 , the connection being in the installation position; Fig 3] Figure 3 a representation similar to that of the figure 2 , in which the tapping is in the installed position; [ Fig 4] Figure 4 , a flowchart of a method for assembling a ventilation system as shown on the figures 2 And 3 ; Fig 5] Figure 5 a schematic representation similar to that of the figure 1 , on which the removable accessories are in a different configuration than that of the figure 1 ; Fig 6] Figure 6 a schematic representation similar to that of the Figures 1 And 5, on which the removable accessories are in a different configuration than those of the Figures 1 And 5 .

[0014] In the following description, the terms horizontal and vertical are understood to refer to the ground on which the building mentioned below extends, a horizontal direction extending substantially parallel to the ground while a vertical direction extending substantially perpendicular to the ground.

[0015] With reference to the figure 1 , a ventilation installation 10 includes a building wall 12 and a ventilation box 14.

[0016] The building wall 12 separates an interior 16 of a room from an exterior 18 of the room.

[0017] The interior 16 of the room is, for example, an enclosed space isolated from the exterior 18 of the room by the building wall 12. The interior 16 of the room contains, for example, room air, with outside air being located outside 18 of the room. The exterior 18 of the room is, for example, the exterior of the building. In specific variations, the exterior 18 of the room is the interior of another room in the building.

[0018] A building wall 12 is, for example, a vertical wall of the building, also called a wall or partition of the building. Alternatively, a building wall is, for example, a horizontal wall or one extending at least along a horizontal component. In this case, a building wall 12 is called the ceiling, roof, or floor of the building.

[0019] The building wall 12 includes an opening 20. In the variant illustrated in figure 1 , the wall of building 12 includes two openings 20.

[0020] Each opening 20 fluidly connects the interior 16 to the exterior 18 of the room. The opening 20 is, for example, elliptical or circular in shape. The opening 20 has, for example, a diameter between 125 mm and 800 mm. The depth of the opening 20, which also corresponds to the thickness of the building wall 12, is, for example, between 10 mm and 400 mm.

[0021] The ventilation box 14 includes an outer casing 22, as well as several removable accessories, namely spigots 24 and flaps 26.

[0022] The ventilation box 14 is a ventilation box designed to ventilate the interior 16 of the room by allowing an exchange of air between the interior 16 of the room and the exterior 18 of the room.

[0023] The ventilation unit 14 is, for example, installed inside 16 of the room.

[0024] The ventilation box 14 is for example suitable to be installed in the room to be fixed relative to the wall 12. The ventilation box 14 is for example positioned opposite the building wall 12, and for example in contact with the building wall 12.

[0025] In variants not shown, the ventilation box 14 is fixed relative to the building wall 12 away from the building wall 12, for example by being fixed on a floor of the building while the building wall 12 is a wall of the building.

[0026] In the example of figures 1 to 3 , 5 and 6 As will be understood later, ventilation unit 14 is a dual-flow ventilation unit. However, it could be another type of unit, such as a single-flow ventilation unit or a ventilation unit with a smoke extraction function.

[0027] The outer shell 22, for example, is parallelepiped-shaped. As illustrated on the figure 1 The outer envelope comprises, for example, two horizontal panels 27A, two lateral vertical panels 27B, and two longitudinal vertical panels 27C (only one of each of these panels being visible on the figure 1 One of the horizontal panels 27A is, for example, configured to be in contact with a ceiling or floor of the building, while one of the lateral vertical panels 27B and one of the longitudinal vertical panels 27C are each configured to be in contact with a wall of the building. Preferably, one of the lateral panels 27A, 27B, or 27C is in contact with the wall of the building 12.

[0028] The outer envelope 22 includes an inner face 28. The inner face 28 extends, for example, over at least one of the horizontal panels 27A, one of the lateral vertical panels 27B, and one of the longitudinal vertical panels 27C.

[0029] The inner face 28, or in other words, the outer envelope 22, delimits an inner compartment 30. The outer envelope 22 then separates the inner compartment 30 from an outer 32 of the box.

[0030] In the example of figures 1 to 3 , 5 and 6where the ventilation unit 14 is a dual-flow unit, the inner face 28 delimits, for example, two inner compartments 30 (one of the two compartments 30 is not shown). The inner face 28 delimits, for example, a heat exchange compartment (not shown) located between the two inner compartments 30. The two inner compartments 30 are, for example, fluidly connected to the heat exchange compartment. The heat exchange compartment is fluidly connected to the interior 16 of the room so as to allow air exchange between the heat exchange compartment and the rest of the interior 16 of the room. One of the inner compartments 30 is, for example, configured to supply the heat exchange compartment with air from the exterior 18 of the room, and the other of the inner compartments 30 is, for example, configured to exhaust air from the heat exchange compartment to the exterior 18 of the room.

[0031] The outer casing 22 includes an external opening 34 and preferably a plurality of external openings 34. In the example of the figures 1 to 3 , 5 and 6 where the ventilation box 14 is a double flow ventilation box, the outer envelope 22 includes at least two external openings 34.

[0032] One of the openings 34 supplies, for example, one of the interior compartments 30 with outside air, coming from outside 18 of the room, so that the compartment 30 introduces the outside air into the interior 16 of the room, for example via the exchange compartment.

[0033] The other of the openings 34 supplies, for example, the other of the interior compartments 30 with interior air, coming from the interior 16 of the room, for example via the exchange compartment, to expel the interior air to the outside 18 of the room.

[0034] The outer casing 22 includes, for example, at least one installation hatch 35 separate from the external openings 34.

[0035] The installation hatch 35 opens, for example, into the interior compartment 30 and can be closed by a movable cover 37 between an open position and a closed position.

[0036] Such a hood 37 is in its closed position on the figure 1 And 5 and is therefore not visible in these figures. Hood 37 is visible in the figure 6 , in which the hood is in its open position.

[0037] The installation hatch 35 is configured to be accessible by an operator when the ventilation box 14 is installed relative to the building wall 12. The installation hatch 35 forms, for example, a portion of the horizontal panel 27A located at the bottom of the ventilation box 14 when the installation hatch 35 is closed.

[0038] The external opening 34 is configured to fluidly connect the internal compartment 30 with the external 32 of the ventilation box, and for example with the external 18 of the room.

[0039] The outer casing 22 comprises a plurality of external openings 34, for example three external openings 34 provided for fluidly connecting the inner compartment 30 and the outer 32 of the casing. In other words, each inner compartment 30 is, for example, capable of being fluidly connected to the outer 32 of the casing via the plurality of external openings 34, for example the three external openings 34.

[0040] The inner compartment 30 is thus able to be connected to the outside 32 of the casing in several different directions, each direction being defined by one of the external openings 34.

[0041] Each external opening 34 designed to fluidly connect the inner compartment 30 and the outer part 32 of the casing 14 extends, for example, along a plane normal to the planes along which the other external openings 34 designed to fluidly connect the same inner compartment 30 and the outer part 32 of the casing extend. The inner compartment 30 is thus able to be connected to the outer part 32 of the casing in three orthogonal directions.

[0042] As illustrated on the figure 1 , one of the horizontal panels 27A, one of the lateral vertical panels 27B and one of the longitudinal vertical panels 27C are each equipped with an external opening 34.

[0043] In the example of figures 1 to 3 , and 6, in which the ventilation box 14 comprises two internal compartments 30, the external casing 22 comprises for example three external openings 34 provided to fluidly connect one of the internal compartments 30 with the exterior 32, and three external openings 34 provided to fluidly connect the other of the internal compartments 30 with the exterior 32.

[0044] The spigot 24, which is a special removable accessory, is configured to equip the external opening 34 according to an installation position, illustrated on the figure 2 , and according to an installed position, illustrated on the figure 3The spigot 24 is, in other words, repositionable to fit the external opening 34 between the installation position and the installed position. The installation position corresponds, for example, to the position occupied by the spigot 24 when the casing 14 is being installed and / or during its transport; the installed position corresponds, for example, to the position occupied by the spigot 24 when the casing 14 is installed.

[0045] In the preferred embodiment where the ventilation box 14 includes a plurality of external openings 34, the branch 24 is able to equip indifferently each of the external openings 34 by alternately taking the installation position and the installed position for the external opening equipped by the branch 34. In other words the branch 24 is therefore able to equip any external opening 34 in any of its installed and installation positions.

[0046] The 24 stitching includes a 36 collar and a 38 base.

[0047] The collar 36 is connected to the base 38 and, for example, came from material with the base 38.

[0048] The collar 36 is configured to guide a fluid through the external opening 34 when the branch is in the installed position. The collar 36 is thus configured to fluidly connect the internal compartment 30 with the exterior 32 of the casing, and more specifically with the exterior 18 of the room.

[0049] Neck 36, for example, is cylindrical in shape. The internal diameter of neck 36 is, for example, between 125 mm and 800 mm. The external diameter of neck 36 is, for example, between 80% and 100% of the diameter of orifice 20.

[0050] For example, the length of the 36 collar is between 20 mm and 200 mm.

[0051] When the 24th branch is in the installation position, the 36th collar protrudes towards the inner compartment 30. The 36th collar then preferably extends entirely into the inner compartment 30.

[0052] When the spigot 24 is in the installed position, the neck 36 protrudes outwards from the outer casing 22. In other words, the neck 36 then protrudes outwards 32 from the casing, that is to say away from the inner compartment 30.

[0053] When the spigot 24 is in the installed position and the ventilation box 14 is installed in the room, the neck 36 preferably extends through the orifice 20. The neck 36 is, for example, inserted to a depth of at least 20mm of the orifice 20. In a particular variant not shown, the neck 36 is connected to a pipe, said pipe being fluidly connected to the outside 18 of the room.

[0054] Base 38, for example, is formed by a plate extending around one end of neck 36.

[0055] When the spigot 24 is in the installed position, the base 38 holds the collar 36 on the outer envelope 22 so that the collar 36 protrudes outwards from the outer envelope 22.

[0056] When the spigot 24 is in the installed position, the base 38 is fixed by being held against the inner face 28, so that the neck 36 extends through the external opening 34.

[0057] When the spigot 24 is in the installation position, the base 38 holds the collar 36 on the outer casing 22 so that the collar 36 protrudes towards the inner compartment 30, without passing through the outer opening 34.

[0058] When the spigot 24 is in the installation position, the base 38 is fixed by being held against the inner face 28, so that the neck is positioned opposite the external opening 34 by extending in the opposite direction of the external opening 34.

[0059] The base 38 connects, for example, the neck 36 to the outer envelope 22 so that any fluid exchange through the external opening 34 is guided through the neck 36.

[0060] As seen above, the base 38 extends entirely within the internal compartment 30, whether the base 38 is in its installation position or its installed position. Consequently, the spigot 24 can be removed, repositioned, and / or positioned on another opening 34 from the internal compartment 30, notably via the hatch 35.

[0061] The spigot 24 is repositionable between its installation position and its installed position, on the one or any of the external openings 34, by removing the spigot 24 from the external opening 34 on which the spigot 24 was in the installation position, rotating the spigot 24, and fitting the one or any of the external openings 34 of the spigot 24 in the installed position.

[0062] The ventilation unit 14 includes, for example, at least one retaining element 40 for the branch 24, configured to hold the base 38 against the inner face 28, regardless of whether the branch is in its installation position or its installed position. The retaining element 40 for the branch 24 is preferably configured to hold the base 38 against the inner face 28 from the inner compartment 30; that is, the retaining element 40 for the branch 24 is accessible from the inner compartment 30. The element 40 is removable to allow the branch 24 to be removed, positioned, and repositioned. For example, each element 40 includes a screw.

[0063] The spigot 24 can then be repositioned by removing at least one retaining member 40, the spigot 24 being repositioned following the placement of at least one member 40.

[0064] Among the removable accessories, the ventilation box 14 includes one or more flaps 26, preferably when the ventilation box 14 includes a plurality of external openings 34.

[0065] The shutter 26 is for example formed by a plate whose dimensions, i.e. for example its width and length, are greater than the dimensions of the external opening 34, i.e. for example greater than the diameter of the external opening 34.

[0066] The shutter 26 is then configured to close one of the external openings 34 when it is fitted to that external opening 34. The shutter 26 is in particular configured to fit indifferently each of the external openings 34, the shutter 26 then closing the external opening 34 fitted by the shutter 26.

[0067] When fitted to an external opening 34, the flap 26 is held against the inner face 28, so that it can be removed and / or positioned on another opening 34 from the inner compartment 30 into which this external opening 34 leads, in particular via the hatch 35.

[0068] The ventilation box 14 includes, for example, at least one retaining member 42 for the flap 26, configured to retain the flap 26 on the inner face 28. The retaining member 42 is preferably configured to retain the flap 26 on the inner face 28 from the inner compartment 30, i.e., the retaining member 42 is accessible from the inner compartment 30. The member 42 is removable so that the flap 26 can be removed. For example, each member 42 includes a screw.

[0069] At least one retaining member 42 of the flap 26 and at least one retaining member 40 of the branch 24 are preferably of the same type, so that the retaining member 42 of the flap 26 can be used for the retention of the branch 24, and that the retaining member 40 of the branch 24 can be used for the retention of the flap 26.

[0070] In the example of figures 1 to 3 , 5 and 6 , where three external openings 34 are provided to fluidly connect the inner compartment 30 and the outer compartment 32 of the ventilation box, two flaps 26 and a branch 24 are provided for example, the flaps 26 equipping two of the three external openings 34 and the branch 24 equipping the other of the three external openings 34.

[0071] In this example, and as can be seen in figure 3, fluid exchange is prevented through external openings equipped with a shutter 26, the fluid exchange between the outside 32 of the box and more particularly the outside 18 of the room is then guided through the single branch 24.

[0072] Thus, the inner compartment 30 is in fluidic communication with the exterior 32 of the box and more particularly with the exterior 18 of the room, through only one of the external openings 34 leading into the inner compartment 30.

[0073] In this example, the orientation of the fluidic communication between the exterior 18 of the room and the interior compartment 30 depends on the position of the shutters 26 and the branch 24 on the external openings 34.

[0074] As seen on the figure 1, the tapping 24 is for example installed in an external opening 34 carried by one of the longitudinal vertical panels 27C, the other external openings being equipped with a shutter 26.

[0075] In an alternative configuration of the same ventilation unit 14, presented in figure 5 , the spigot 24 is installed in an external opening 34 supported by one of the horizontal panels 27A, the other external openings 34 being equipped with a shutter 26.

[0076] In another alternative configuration of the same ventilation unit 14, presented in figure 6 , the tapping 24 is installed in an external opening 34 carried by one of the vertical side panels 27B, the other external openings 34 being equipped with a flap 26.

[0077] Thus, as seen in the examples of Figures 1 , 5 And 6, the same ventilation box 14, and more particularly the same internal compartment 30 can be in fluidic connection with the outside 32 of the ventilation box 14 by different directions by simply repositioning the air tap 24 and the flaps 26 on the external openings 34.

[0078] The same ventilation unit 14 can then, depending on the configuration of the air inlets 24 on the external openings 34, be installed to be in fluidic communication with the outside 18 of the room through the opening 20 of a building wall 12, for example a vertical building wall, as is the case in the example of the Figures 1 And 6 , or a ceiling or a horizontal floor of the building, as is the case in the figure 5 .

[0079] In the example of the figure 1The ventilation unit 14 is adapted to be in fluidic communication with a building wall 12 parallel to the longitudinal vertical panels 27C. In the example of the figure 5 The ventilation unit 14 is adapted to be in fluidic communication with a building wall 12 parallel to the horizontal panels 27A. In the example of the figure 6 , the ventilation box 14 is adapted to be in fluidic communication with a building wall 12 parallel to the lateral vertical panels 27B.

[0080] A method for installing a ventilation box 14, as previously presented, will now be described.

[0081] With reference to the figure 4The process 100 includes a step 110 for supplying the ventilation unit and at least one step 130 for removing one of the removable accessories. The process 100 further includes a step 120 for attaching the outer casing 22, which takes place between step 110 for supplying the ventilation unit and step 130 for removing it.

[0082] During step 110 of the supply of the ventilation unit 14, the ventilation unit 14 is supplied with the removable accessories that equip the external openings 34. In particular, each spigot 24 is fitted to one of the external openings 34, when positioned in the installation position. In particular, each damper 26 is fitted to one of the external openings 34. All the external openings 34 are advantageously equipped either by a damper 26 or by a spigot 24.

[0083] In the installation procedure for the ventilation unit 14 shown on the figures 1 to 3 , 5 and 6, in which the ventilation box 14 includes three external openings 34 leading into each internal compartment 30, the ventilation box 14 is supplied with the spigot 24 equipping one of the external openings 34, being positioned in the installation position, and is supplied with two flaps 26, equipping the other two external openings 34, and this for each internal compartment 30.

[0084] Step 110 of supplying the ventilation box 14 is preferably followed by step 120 of fixing the outer envelope 22 relative to the building wall 12.

[0085] The fixing step 120 is performed while the spigot 24 is still in its installed position, held by its base against the inner face of the internal compartment. In other words, the spigot 24 will only be repositioned in its installed position later. Similarly, the fixing step 120 is performed while the flap 26 is fitted to the external opening and held against the inner face of the internal compartment 30. Each spigot 24 and each flap 26 can, if necessary, be removed later in step 110 from inside the housing 14, after the housing 14 has already been installed.

[0086] During the fixing step 120, the outer casing 22 is brought so that the external opening 34, or one of the external openings 34, extends opposite the opening in the building wall 12. The outer casing 22 is then fixed relative to the wall 12 so that the external opening 34, or one of the external openings 34, extends opposite the opening 20 in the building wall 12 following the fixing step 120. The outer casing 22 is then, for example, fixed to the wall 12 or to another wall of the room to fix the outer casing 22 relative to the wall 12.

[0087] During a repositioning step, preferably taking place after the fixing step, the spigot 24 is repositioned into the installed position from inside the inner compartment 30. The spigot 24 is in particular repositioned into its installed position so that the neck 36 extends through the opening 20 of the building wall 12.

[0088] The step of repositioning the tapping 24 into its installed position is carried out from the internal compartment 30, for example by an operator, through the installation hatch 35 and is preferably carried out entirely by the operator through the installation hatch 35.

[0089] During the step of repositioning the tapping into its installed position, the operator first performs step 130 of removing the tapping from the external opening 34 on which the tapping 24 was in its installed position. The operator then rotates the tapping 24 and positions it on the same opening 34, or on another opening 34, in its installed position. In other words, the process may include a step of positioning the removable accessory on another external opening, subsequent to step 130 of removing this removable accessory from an initial external opening 34.

[0090] In addition to removing and repositioning one or more spigots, it is also possible to remove one or more flaps 26 after the fixing step 120 has already taken place. For example, during the spigot repositioning step 24, the operator swaps the position of a flap 26 with that of the spigot 24. The operator then removes the spigot 24 from the external opening 34 on which the spigot was in its installed position and removes the flap 26 from the external opening 34 that the flap 26 was fitted to. The operator then positions the spigot 24 in its installed position on the external opening 34 that the flap 26 was previously fitted to. Furthermore, the operator positions the flap 26 on the external opening 34 that the spigot 24 was previously fitted to. In certain embodiments, it is also possible to replace another flap 26 with another spigot 24.

[0091] In an embodiment not shown, the ventilation unit 14 is located outside 18 of the room. The heat exchange compartment 30 is then fluidly connected to the inside 16 of the room via an external opening 34 equipped with a branch 24 extending, for example, at least partially into the orifice 20. The neck 36 of the branch 24 is then configured, as seen above, to fluidly connect the internal compartment 30 with the outside of the ventilation unit 32, the outside of the ventilation unit 32 being the inside 16 of the room in this particular embodiment.

[0092] The use of a repositionable spigot 24 between an installation position and an installed position allows the spigot 24 to be protected prior to the installation of the ventilation box 24, while allowing the spigot 24 to perform its air guidance functions once the spigot 24 is installed.

[0093] Maintaining the spigot 24 in its installed and installation positions by the base 38 against the inner face 28 is particularly advantageous since it allows the spigot to be fixed in these two positions from the inner compartment 30, thus allowing the spigot to be repositioned between these two positions even after the installation of the ventilation box 14 relative to the building wall 12.

[0094] A ventilation box 14 comprising a plurality of external openings 34 and a branch 24 suitable for equipping indifferently each of these external openings 34 is particularly advantageous for the branch 24 to ensure fluid communication between the internal compartment 30 and the outside 32 of the box, and more particularly the outside 18 of the room, and this regardless of which external opening 34 is opposite an orifice 20 of the building wall 12.

[0095] The use of flap 26 also ensures that all fluid exchange takes place through the branch 24.

[0096] A flap 26 suitable for equipping indifferently each of these external openings 34 also ensures that the entire fluid exchange takes place through the tapping 24 in a simple way, regardless of which external orifice 34 the tapping 24 equips.

[0097] The fact that the shutter 26 is held against the inner face 28 when the shutter 26 is fitted to one of the external openings 34 is also particularly advantageous since this allows the shutter 26 to be mounted after the installation of the ventilation box 14 relative to the building wall 12.

[0098] The use of three external openings 34 for an internal compartment 30, as well as two flaps 26 and a spigot 24 to equip these external openings 34 is particularly advantageous since this allows an air spigot 24 to be made in one of the three directions defined by the external openings 34, which are for example orthogonal, and thus allow a spigot 24 in three different directions.

[0099] The neck 36 extending through the orifice 20 when the branch 24 is in its installed position allows good air guidance between the outside 18 of the room and the interior compartment 30, while limiting direct exchanges between the outside 18 of the room and the inside 16 of the room.

[0100] The installation method 100 comprising a step of removing the removable accessory 24, 26 from the external opening 34 from the internal compartment 30 is particularly advantageous since such a method allows the selection of an external orifice 34 through which a fluid exchange will take place.

[0101] The installation process 100, which includes a step of repositioning the branch 24, is particularly advantageous since it allows the branches 24 to be protected before being repositioned in the installed position.

[0102] The fixing step 120 of the outer casing 22 prior to the removal step 130 and repositioning is also preferred, since the removable accessories are protected throughout the fixing step 120.

[0103] The fact that certain steps, in particular the removal step or the repositioning step, are carried out through the installation hatch 35 allows for particularly easy repositioning of removable accessories.

Claims

1. Ventilation box (14) comprising: - an outer casing (22), the outer casing (22) comprising an inner face (28) delimiting an inner compartment (30) of the ventilation box and the outer casing (22) comprising an external opening (34) for fluidically connecting the inner compartment (30) with an exterior (32) of the ventilation box (14); and - at least one removable accessory (24, 26), configured to equip the external opening (34), characterised in that the at least one removable accessory (24, 26) is held against the inner face (28) when fitted to the external opening (34), so that it can be removed from the external opening (34) from the inner compartment (30).

2. Ventilation box (14) according to claim 1, wherein at least one removable accessory is a branch connection (24), which can be fitted to the external opening (34) in an installed position and which comprises: - a collar (36), the collar (36) being configured to guide a fluid through the external opening (34) when the branch connection (24) is in the installed position and thereby fluidically connecting the inner compartment (30) with the exterior of the ventilation box (32), and - a base (38), which, when the branch connection (24) equips the external opening (34) in the installed position, is secured to the outer casing (22) while being held against the inner face (28), the collar (36) then being retained on the outer casing (22) via the base (38) such that the collar (36) projects outward from the outer casing (22) through the external opening (24).

3. Ventilation box (14) according to claim 2, wherein, to equip the external opening (34), the branch connection (24) is repositionable, between the installed position and an installation position, in which: - the base (38) is fixed to the outer casing (22) by being held against the lower face (28) and - the collar (36) is held on the outer casing (22) by the base (38), being positioned opposite the external opening (34) and projecting towards the inner compartment (30).

4. Ventilation box (14) according to any one of the preceding claims, wherein the or at least one of the removable accessory(ies) consists of a flap (26), the flap (26) closing off the external opening (34) when mounted on the external opening (34), being held against the inner face (28) opposite the external opening (34).

5. Ventilation box (14) according to any one of the preceding claims, wherein a multitude of external openings (34) is provided for fluidically connecting the inner compartment (30) with the exterior (32) of the ventilation box (14), each removable accessory (24, 26) being suitable for equipping any one of said external openings (34).

6. Ventilation system (10) comprising a ventilation box (14) according to any one of claims 1 to 5 and a building wall (12), the building wall (12) separating an interior (16) of a room from an exterior (18) of said room, the building wall (12) comprising a port (20) fluidically connecting the interior (16) with the exterior (18) of the room, the interior compartment (30) being in fluid communication with the room exterior (18) via the port (20) and the external opening (34).

7. Ventilation system (10) according to claim 6, comprising a ventilation box according to any one of claims 2 or 3 and in which the branch connection (24) is in the position installed on the external opening (34), so that the collar (36) extends through the port (20) of the building wall (12).

8. A method of installing (100) a ventilation box (14), the ventilation box (14) being according to any one of claims 1 to 5, wherein the method (100) comprises a step of removing (130) the removable accessory (24, 26) from the external opening (34) from the internal compartment (30).

9. An installation method according to claim 8, wherein the ventilation box (14) is according to claim 3, the installation method comprising the following steps: - supply (110) of the ventilation box (14), the ventilation box (14) being supplied with the branch connection (24) fitted to the external opening (34), positioned in the installation position, and - repositioning of the branch connection (24) in the installed position.

10. Installation method (100) according to claim 9, wherein the installation method comprises a fastening step (120) of the outer casing (22) relative to a building wall (12), carried out while the branch connection (24) is positioned in the installation position, the step of repositioning the branch connection (24) on the outer casing (22) taking place subsequent to the fastening step (120).

11. Installation method (100) according to any one of claims 9 or 10, wherein the ventilation box (14) includes an installation hatch (35) that opens into the inner compartment (30), with the repositioning of the branch connection (24) being performed from inside the inner compartment (30) through the installation hatch (35).

12. Installation method (100) according to any one of claims 8 to 11, wherein the ventilation box (14) is according to claim 5, the installation method comprising a step of positioning the removable accessory (24, 26) on another external opening (34), subsequent to the step of removing (130) the removable accessory (24, 26) from the external opening (34).

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