EP4155618A1 - Air-driven connection element with simultaneous electrical and air connection - Google Patents

Abstract

The invention proposes an aeraulic connection for connecting an aeraulic duct to an aeraulic box, for example a controlled mechanical ventilation box, comprising:
- a modulating member (40) configured to modulate the airflow of an airflow flowing through said air connection,
- a control unit (42) electrically connected to the modulating unit and configured to control said modulating unit,
- an electrical connector (50) electrically connected to the control box and configured to connect to a power supply connector of an air box,
- a system for fixing said aeraulic connection to an aeraulic box,

the aeraulic connector being characterized in that the fixing system is configured to allow said aeraulic connector to be fixed to the aeraulic box simultaneously with the electrical connection of the electrical connector with an electrical power connector.

Description

The present invention relates to the field of ventilation and/or air conditioning installations. In particular, the invention relates to an aeraulic connector for connecting an aeraulic duct to an aeraulic box, for example a controlled mechanical ventilation box.

The invention also relates to an aeration kit comprising such an aeration connection and an aeration box as well as a method of connecting such an aeration kit.

For the modulation of the flow of air circulating through an air duct, it is known to arrange a flow regulating member in series with this air duct. In other words, the regulating member is arranged through or at one end of the ventilation duct. The regulating member generally comprises a movable wall making it possible to more or less obstruct the passage of air through the ventilation duct. This regulating member is electrically powered for controlled or automatic operation.

This type of ventilation duct is generally connected in an aeraulic manner at one end to an aeration box, for example a controlled mechanical ventilation box, otherwise called “VMC”.

To facilitate the installation and connection of this type of regulating member, it is known to place it close to the ventilation box to which the ventilation duct is connected. Such an air box generally comprises a ventilation unit generating air circulation inside one or more air ducts and which is electrically powered, generally via a general network of the building. It is therefore easier to electrically connect the regulating member to the ventilation unit to avoid an additional length of electrical cable and to facilitate the electrical connection. These advantages become very significant when a plurality of regulating members are arranged in each of the ventilation ducts connected to the ventilation box.

It is also known to arrange this regulating member within an aeraulic connection placed between an opening of the aeraulic box and an aeraulic duct.

An example of such an air connection system is illustrated in figures 1 and 2 . An air connection 10 comprises a body 12 defining a passage channel 13 of air. The passage channel 13 defines an aeraulic diameter corresponding to the section of an aeraulic duct 16 to be connected to the aeraulic connector 10.

A rotary valve 14 is arranged in this passage channel 13 so as to be able to modify the air passage section through the passage channel 13 and thus modulate the flow of air passing through the air connection 10. The rotary valve 14 is moved in rotation by means of a motor 15 arranged outside the body 12, therefore outside the aeraulic diameter.

The aeraulic connector 10 comprises a control unit 18 for controlling the motor 15. The control unit 18 is also placed outside the body 12, therefore outside the aeraulic diameter. This control box 18 comprises an electrical connector which can be electrically connected to the ventilation unit by means of an electrical wire. The electrical connector of the ventilation box is generally arranged inside the ventilation box at the level of an electronic control unit.

The aeraulic connector 10 is fixed to an aeraulic box at one end and fixed at an opposite end to an aeraulic duct 16 by means of an intermediate piece 17. This intermediate piece 17 forms an external surface 19 around which the ventilation duct 16 is threaded. The intermediate piece 17 is fixed to the air connection 10.

When connecting the ventilation connector 10, the installer mechanically fixes the end of the ventilation connector 10 to the ventilation box, for example by means of a bayonet-type system. This mechanical fixing allows an aeraulic connection of the aeraulic connector 10 with the aeraulic box. Then, the installer electrically connects the airflow connector 10 to the airflow box using an electric cable which he plugs into an electric connector carried by each of them. Finally, the installer sets the ventilation duct 16 to the intermediate piece, for example by using adhesive tape, and ends up mechanically connecting the ventilation connection 10 with the intermediate piece.

A major drawback of this type of aeraulic connection is that it requires the installer to perform numerous assembly actions or steps to achieve the mechanical, aeraulic and electrical connection of the aeraulic connection. This results in an increased complexity of the installation which makes it longer and more difficult for an installer, in particular a non-professional. In addition, the large number of actions leads to an increase in the risk of poor connection of the aeraulic connection.

There is therefore a need for an airflow connection allowing simplified and improved installation to an airflow box and an airflow duct.

• un organe de modulation configuré pour moduler le débit d'air d'un flux d'air circulant au travers dudit raccord aéraulique,
• un boîtier de commande connecté électriquement à l'organe de modulation et configuré pour commander ledit organe de modulation,
• un connecteur électrique connecté électriquement au boîtier de commande et configuré pour se connecter à un connecteur d'alimentation électrique d'un caisson aéraulique,
• un système de fixation dudit raccord aéraulique à un caisson aéraulique,

le raccord aéraulique étant caractérisé en ce que le système de fixation est configuré pour permettre la fixation dudit raccord aéraulique au caisson aéraulique de manière simultanée à la connexion électrique du connecteur électrique avec un connecteur d'alimentation électrique.For this, the invention proposes an aeraulic connection for connecting an aeraulic duct to an aeraulic box, for example a controlled mechanical ventilation box, comprising:

• a modulating member configured to modulate the airflow of an airflow flowing through said aeraulic connection,
• a control unit electrically connected to the modulation unit and configured to control said modulation unit,
• an electrical connector electrically connected to the control box and configured to connect to an electrical power connector of an air box,
• a system for fixing said aeraulic connection to an aeraulic box,

the aeraulic connector being characterized in that the fixing system is configured to allow said aeraulic connector to be fixed to the aeraulic box simultaneously with the electrical connection of the electrical connector with an electrical power connector.

The aeraulic connection to make an electrical connection with an aeraulic box simultaneously with its mechanical connection to said aeraulic box. It is thus possible to connect all the functionalities of the aeraulic fitting (electrical, electronic, mechanical and/or aeraulic) in the same fixing step. The aeraulic connection can thus approach a “plug-and-play” configuration greatly facilitating the installation of this aeraulic connection.

According to one embodiment of the airflow connector, the fastening system is configured to allow simultaneous connection using at most two movements of said airflow connector.

According to one embodiment of the ventilation connection, the electrical connector is arranged at a front of the ventilation connection, said facade being intended to face the ventilation box.

According to one embodiment of the airflow connector, the latter comprises an outer wall configured to receive and hold in position a portion of airflow duct and defining an airflow diameter, the modulation member and the control box being placed inside of this aeraulic diameter.

According to one embodiment of the air flow connector, an air flow passage channel is formed through the air flow connector, the electrical connector being arranged outside the air flow passage channel to isolate the electrical connector from a flow of air flowing through the passage channel.

According to one embodiment of the aeraulic connection, the aeraulic diameter is divided so as to form a first portion receiving the control unit and a second portion forming the channel through which the air flow passes and intended to cooperate with a channel for receiving the air flow from an air box, the electrical connector emerging at the end of said first portion.

According to one embodiment of the aeraulic coupling, the air flow passage channel forms an airtight collar at one end of the air flow passage channel intended to cooperate with a channel for receiving the air flow from an aeraulic box.

According to one embodiment of the airflow connector, said fastening system comprises a locking member configured to be placed in a locking position of the connector on said airflow box.

According to one embodiment of the aeraulic connector, the latter further comprises a connector body, the locking member being movable relative to said connector body between said locking position and an unlocking position.

According to one embodiment of the aeraulic coupling, the locking member is a rotatable ring, said ring comprising at least one main locking relief configured to cooperate with at least one secondary locking relief formed on the aeraulic box when the ring is in the locked position.

According to one embodiment of the aeraulic connector, the latter comprises a visual indicator configured to transmit information to a user. This visual indicator may include one or more of an indicator light, a symbol alignment, or an information display. This visual indicator is preferably configured to indicate to the user the complete connection between the airflow connection and an airflow box. The visual indicator can for example transmit at least two types of information: incomplete connection information (for example in the form of a red visual indicator) and complete connection information (for example a visual indicator of red color green). By way of example, the aeraulic connector can comprise a wall or a transparent wall portion behind which the visual indicator is placed. The user therefore has help with the correct connection of the aeraulic connection, which makes installation more reliable and saves time during installation. Visual maintenance of the installation can also be facilitated by this visual indicator.

As an alternative to or combined with the visual indicator, the aeraulic connector can include an audible indicator to transmit information to the user. By way of example, the airflow fitting can be configured to emit a sound when the airflow fitting is completely connected to an airflow box, i.e. electrical, airflow and mechanical connections.

The invention also proposes an aeraulic kit comprising an aeraulic box, for example a controlled mechanical ventilation box, and at the at least one aeraulic connector as described above, said aeraulic box comprising at least one electrical supply connector arranged at the level of said at least one tapping, said at least one electrical supply connector being configured to be arranged facing the connector electrical connection of the aeration connection when the aeration connection is fixed to said aeration box.

According to one embodiment of the ventilation kit, the electrical connector of the ventilation connection and the electrical supply connector of the ventilation box are configured to be in contact with each other when the ventilation connection is fixed to said ventilation box.

• aligner ledit au moins un raccord aéraulique avec un canal de réception du flux d'air dudit caisson aéraulique,
• insérer et connecter ledit au moins un raccord aéraulique audit caisson aéraulique de sorte que le ledit raccord aéraulique est fixé audit caisson aéraulique de manière simultanée à la connexion électrique du connecteur électrique avec ledit au moins un connecteur d'alimentation électrique du caisson aéraulique.

The invention further proposes a method for connecting an airflow kit as described above, comprising the following steps:

• aligning said at least one airflow connector with a channel for receiving the air flow from said airflow box,
• inserting and connecting said at least one aeraulic connector to said aeraulic box so that said aeraulic connector is fixed to said aeraulic box simultaneously with the electrical connection of the electrical connector with said at least one electrical supply connector of the aeraulic box.

Brief description of the drawings

• [Fig. 1] représente schématiquement une vue en perspective d'une gaine aéraulique et d'un raccord aéraulique de l'art antérieur comprenant un boîtier de commande, un moteur ainsi qu'un connecteur électrique faisant saillie hors du corps formant le raccord aéraulique.
• [Fig. 2] représente schématiquement une vue en coupe du raccord aéraulique de la figure 1 en position de raccordement avec la gaine aéraulique.
• [Fig. 3] représente schématiquement une vue en perspective d'une première extrémité d'un raccord aéraulique selon l'invention.
• [Fig. 4] représente schématiquement un kit aéraulique comprenant une caisson aéraulique et une pluralité de raccords aéraulique tel que représentés en figure 3.
• [Fig. 5] représente schématiquement une vue en coupe du raccord aéraulique de la figure 3 en position de raccordement avec une gaine aéraulique.
• [Fig. 6] représente schématiquement une vue en perspective et en coupe du raccord aéraulique de la figure 3 en position de raccordement avec le caisson aéraulique de la figure 4.
• [Fig. 7] représente schématiquement une vue en perspective d'une deuxième extrémité du raccord aéraulique de la figure 3.
• [Fig. 8] représente schématiquement une vue en perspective d'un orifice de raccordement du caisson aéraulique de la figure 4.

The accompanying drawings illustrate the invention:

• [ Fig. 1 ] schematically represents a perspective view of an air duct and an air flow connector of the prior art comprising a control unit, a motor and an electrical connector projecting out of the body forming the air flow connector.
• [ Fig. 2 ] schematically represents a sectional view of the ventilation connection of the figure 1 in the connection position with the ventilation duct.
• [ Fig. 3 ] schematically represents a perspective view of a first end of an air connection according to the invention.
• [ Fig. 4 ] schematically represents an aeraulic kit comprising an aeraulic box and a plurality of aeraulic fittings as shown in picture 3 .
• [ Fig. 5 ] schematically represents a sectional view of the ventilation connection of the picture 3 in the connection position with an air duct.
• [ Fig. 6 ] schematically represents a view in perspective and in section of the ventilation connection of the picture 3 in the connection position with the ventilation unit of the figure 4 .
• [ Fig. 7 ] schematically represents a perspective view of a second end of the ventilation connection of the picture 3 .
• [ Fig. 8 ] schematically represents a perspective view of a connection orifice of the ventilation unit of the figure 4 .

Description of embodiment(s)

For reasons of clarity, only the essential elements for understanding the invention have been represented schematically in these figures, and this without respecting the scale.

The inventive concept is described more fully below with reference to the accompanying drawings, in which embodiments of the inventive concept are shown. In the drawings, the size and relative sizes of the elements may be exaggerated for purposes of clarity. Like numbers refer to like elements throughout the drawings. However, this concept of the invention can be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. Instead, these embodiments are provided so that this description is complete, and communicates the scope of the inventive concept to those skilled in the art.

Reference throughout the specification to "an embodiment" means that a particular feature, structure, or feature described in connection with an embodiment is included in at least one embodiment of the present invention. Thus, the appearance of the phrase "in one embodiment" at various places throughout the specification does not not necessarily refer to the same embodiment. Further, the particular functionalities, structures, or features may be combined in any suitable manner in one or more embodiments. Further, the term "comprising" does not exclude other elements or steps.

An aeraulic connection is proposed for the connection of an aeraulic duct to an aeraulic box.

The aeraulic connector can be offered alone or in an aeraulic kit comprising an aeraulic box, for example a controlled mechanical ventilation box, and at least one aeraulic connector as proposed

The term “ventilation duct” is understood to mean a hollow and slender body through which a gas can circulate, for example air. The aeraulic duct defines an aeraulic diameter characterizing an associated pressure drop. One thus speaks of the same aeraulic diameter for an aeraulic duct of circular, square or any section having the same pressure drop for a given air flow. An air duct is generally of circular or quasi-circular section (flattened circular) but any shape can be used. An air duct can be made in the form of a one-piece tube, for example of plastic material, or else in the form of a flexible material surrounding a core. This core is for example a rigid wire in the form of a helix or a plurality of rings extending along the path of the air duct. An insulating layer can be placed around the air duct to limit heat loss. An example of an air duct is illustrated in figure 1 .

The term "ventilation box" means a box comprising a plurality of orifices to which ventilation ducts can be connected in an aeraulic manner. In general, the box comprises a plurality of orifices intended to be connected to ventilation ducts opening out at the level of rooms of a building and an orifice intended to be in fluid communication with the exterior of the building or a technical room. The ventilation unit is thus a point of convergence of ventilation ducts of an ventilation circuit between ventilated rooms of a building and one or more external or unregulated rooms of this same building.

Such an air box is preferably an air box for controlled mechanical ventilation (VMC) or an air box for an air conditioning installation. In these cases, the ventilation unit includes a ventilation unit generating air circulation inside the ventilation ducts to which it is connected. It is thus possible to suck in stale air from the rooms of the building where the ventilation ducts are installed so as to reject them outside of this building. Alternatively, it is possible to blow clean air from the outside or from an unregulated room in the building to the rooms where the air ducts lead out. The aeraulic box is connected to an electrical network of the building to electrically supply the ventilation unit.

The term “air connection” means a part configured to be fixed in a sealed manner between an air flow box and an air flow duct. The airflow connection is therefore a part forming an interface between an airflow duct and an airflow box. An air connection is otherwise called "air connection".

As illustrated in picture 3 , the ventilation connector 20 comprises a coupling body 22 on which an ventilation duct (not visible) can be threaded. The air duct can be slipped on at a first end 23 of the connector body 22. In particular, the connector body 22 forms an outer wall 24 configured to receive an air duct. A relief 26 can be formed at the level of this outer wall 24 to improve the maintenance of the air duct on said outer wall 24. In particular, this relief can be a portion of net or any shape protruding from said outer wall 24 .

The outer wall 24 is preferably circular. Indeed, the majority of the air ducts are of circular section so that a complementarity of shape makes it possible to improve or simplify the sealing between the air flow connection 20 and the air flow duct. More generally, the outer wall 24 can be of any shape. The outer wall dimensions 24 are configured to allow a sealed connection of the air duct to the air connection 20. These dimensions include the diameter of the outer wall 24 when the latter is circular. The outer wall 24 is preferably configured to correspond to a predetermined airflow diameter, whatever its geometric shape. By way of example, the outer wall 24 can be configured to be connected to an air duct with a diameter of 80mm or 125mm.

The airflow connector 20 is also configured to be fixed at a second end 25 of the connector body 24 to an airflow box 28. Such an airflow box 28 is for example visible in figure 4 where a plurality of air connections 20 are shown, each connected to a connection port 30 of the air box 28.

The air box 28 comprises a box body 32 forming the plurality of connection orifices 30. In the example of figure 4 , the aeration box 28 comprises 7 connection orifices 30. Each of these connection orifices 30 is configured to be connected in a sealed manner to an aeration connection 20. The configuration making it possible to obtain this sealing with an aeration connection 20 is detailed below. in reference to figures 6 and 7 .

The ventilation unit 28 further comprises an external orifice 35 intended to be connected with an ventilation duct opening outside the building or in a non-ventilated room. This external orifice 35 corresponds to an inlet of healthy air when the ventilation unit 28 operates by blowing air. Conversely, the external orifice 35 corresponds to a stale air outlet coming from the rooms where the ventilation ducts connected to the ventilation box 28 open when the ventilation box operates in air extraction.

The ventilation unit 28 further comprises a ventilation unit (not visible) and a control board (not visible) of the ventilation unit arranged inside the housing body 30. A cover 34 formed on a side wall of the box 30 allows access to the ventilation unit or to the control card. This control card is preferably electrically powered via an electrical network of the building to electrically power the ventilation unit.

The aeraulic connector 20 is configured to modulate the flow of air circulating through it. For this, the aeraulic connector 20 comprises a modulating member configured to modulate the air flow of an air flow circulating through of said aeraulic connection 20. An example of a modulation device is visible on the figure 5 which represents a cross-sectional view of an aeraulic fitting 20 connected to an aeraulic duct 16.

The coupling body 22 defines by means of the outer wall 24 an aeraulic diameter. In the example shown in the figure 5 , the airflow diameter is defined by the diameter of the outer wall 24 and corresponds to the internal diameter Di of the airflow duct 16.

The aeraulic connector 20 further comprises a modulation member 40 and a control box 42. The modulation member 40 and the control box 42 are preferably arranged inside the aeraulic diameter. Thus, the aeraulic connector 20 defines a configuration where all of its components are arranged inside said aeraulic diameter. A substantially cylindrical or elongated ventilation connection 20 is therefore obtained without any electronic or electrical component protruding from the outer wall 24 receiving the ventilation duct 16.

The connector body 22 also defines a passage channel 48 for the flow of air through the aeraulic connector 20. This passage channel 48 extends between the first 23 and second 25 ends of the aeraulic connector so as to allow the circulation of air. air between the ventilation duct 16 and the ventilation box 28 when these are connected to the ventilation connection 20.

The air fitting 20 is preferably formed as an elongated body along an extension axis A and divided to define an air passage portion and a portion to house the electronic and control components. The passage channel 48 preferably coincides with the air passage portion and extends along this extension axis A.

This division is preferably longitudinal so that each of the portions extends along the axis of extension A. For this, the aeraulic diameter defined by the coupling body 22 is preferably divided so as to define a first 44 and a second 46 servings. The first portion 44 is intended to receive the electronic and control components of the aeraulic connector 20. The second portion 46 corresponds to the passage channel 48. According to a preferred configuration and illustrated in figure 5 , this division is longitudinal and over the entire length of the coupling body 22. Thus, the first portion 44 extends over the entire length of the coupling body 22.

The first 44 and second 46 portions may have a cross section forming a circular segment. By “circular segment” is meant a portion of a disc obtained by tracing a chord to this disc. Thus, the cross-section of the aeraulic diameter can be divided in two by a straight line to form the first 44 and second 46 portions.

By defining the aeraulic diameter as corresponding to 100%, the second air passage portion 46 preferably occupies at least 40%, preferably at least 50%, more preferably at least 60% of the aeraulic diameter.

Modulation member 40 comprises a shutter 41 disposed across passage channel 48 and a motor 43 disposed in first portion 44. Shutter 41 is configured to selectively obstruct passage channel 48. This obstruction is variable so as to to be able to modulate the flow of air circulating through the passage channel 48. According to a preferred embodiment, the flap 41 is rotatable around an axis of rotation B between a position of maximum obstruction and a position of minimal obstruction of the passage channel 48. The axis of rotation B is preferably perpendicular to the axis of extension A. The position of maximum obstruction corresponds to an orientation of the flap 41 in which the wall of the flap 41 extends perpendicular to the axis of extension A so as to at least partially close the passage channel 48. The position of minimum obstruction corresponds to an orientation of the flap 41 in which the wall of the flap 41 extends along the extension axis A so that only the edge of the flap 41 faces the airflow.

The control unit 42 is electrically connected to the modulation unit 40 and configured to control said modulation unit 40. The control unit comprises a printed circuit on which are arranged electronic components making it possible to supply and control the unit. modulation 40, in particular, the motor 43 of the modulation unit 40.

The aeraulic connector 20 further comprises an electrical connector 50 electrically connected to the control box 42. The electrical connector 50 is also configured to connect to an electrical power connector 52 of an air box 28 (see figure 6 ). The electrical connector 50 is for example a portion of the printed circuit of the control unit 42. Preferably, the electrical connector 50 is a male connector and the power supply connector 52 is a female connector.

The electrical connector 50 is arranged at the level of a frontage of the aeraulic connection 20. The electrical connector 50 preferably extends along the axis of extension A. In particular, the electrical connector 50 emerges at the level of the second end 25 of the aeration box 20. Thus the electrical connector 50 faces the aeration box 28 when the aeration connection 20 is connected to the aeration box 28. Thus, the electrical connector 50 can only be electrically connected by direct connection, i.e. without a cable.

The coupling body 22 forms a bearing wall 54 extending transversely to the extension axis A and configured to bear against a front wall 56 of the air box or a connection piece intended to be in support of said front wall 56, between the aeraulic connector 20 and the aeraulic box 28. The electrical connector 50 protrudes from said support wall 54.

The electrical connector 50 is preferably placed at the level of a central zone of the aeraulic diameter. This central zone can be defined as a circular zone extending from the axis of extension A and whose diameter is less than or equal to 50% of the outer diameter of the outer wall 24, even more preferably less than or equal to 30% of the outer diameter of the outer wall 24.

The electrical connector 50 opens out at the end of the first portion 44 so as to be isolated from the air flowing through the second portion 46 (or passage channel 48). In an operation of the ventilation installation in extraction, the air circulating through the second portion 46 is stale air whose humidity and impurities can be very damaging to the integrity of the control box 42 and in particular for the electrical connector 50. It is therefore particularly advantageous to be able to isolate the electrical connector 50 from the second portion 46.

The first portion 44 is preferably closed at the level of the second end 25 by the bearing wall 54 and at the level of the first end 23 by a closure wall 64.

The aeraulic connector 20 further comprises a system for attaching said aeraulic connector 20 to the aeraulic box 28. The attachment system is configured to allow the attachment of said aeraulic connector 20 to the aeraulic box 28 simultaneously with the electrical connection of the electrical connector 50 with the power supply connector 52.

“Simultaneous” means the fact that all of the functionalities of the aeraulic coupling 20 (electrical, electronic, mechanical and/or aeraulic) are connected in the same fixing step. In other words, in this same fixing step, it is possible to make the passage channel 48 communicate with the channel for receiving the air flow 62 of the aeraulic box 28, to electrically connect the electrical connector 50 to the electrical power connector 52 and to mechanically connect the aeraulic connection to the aeraulic box 28.

The aeraulic connector 20 can thus approach a “plug-and-play” configuration greatly facilitating the installation of this aeraulic connector 20. The installation of the aeraulic connector 20 is thus facilitated and made more reliable. The installation does not require an additional and distinct step of electrical connection of the airflow connector 20 to the airflow box 28 as in the example of the prior art illustrated in figures 1 and 2 .

The fixing system can in particular be configured to allow simultaneous connection using at most two movements of said air connection 20. Preferably, the fixing system is configured to allow simultaneous connection using at most one movement of said air connection 20. means by a movement of the aeraulic connector, a movement of the entire aeraulic connector 20 or else a relative movement of a part belonging to the aeraulic connector 20, for example a fixing part with respect to the connector body 22.

A movement corresponds to a translational movement or a rotational movement. A translation movement corresponds for example to a translation along the axis of extension A and a rotational movement to a rotation around the axis of rotation A. The movement can be a combined movement in which a translation and a rotation, two translations or two rotations are carried out simultaneously. As soon as a combined movement is carried out “in series” or not simultaneously, eg a translation then a rotation, it is considered that this corresponds to two movements.

According to a preferred embodiment, the assembly of the aeraulic connector 20 on the aeraulic box 28 requires the same number of movements as the dismantling of the latter from the aeraulic box 28.

The fastening system comprises a locking member 66 configured to be arranged in a locking position of the airflow connector on the airflow box 28. This locking member 66 can be fixed or secured to the connector body 22 or else movable vis-à-vis screw of the latter. Thus, in the latter case, the locking member is movable relative to said coupling body 20 between said locking position and an unlocking position.

The locking member 66 may be a ring movable in rotation around the extension axis A. The ring comprises at least one main locking relief 71 configured to cooperate with at least one secondary locking relief 72 formed on the box aeraulic 28 when the ring is in the locking position.

An example embodiment of the locking member is particularly illustrated in figures 6 and 7 . The main reliefs 70 are here fixing lugs intended to cooperate with cutouts in the front wall 56 forming the secondary reliefs 72. The locking member 66 is here a ring movable in rotation around the axis of extension A by relative to the coupling body 22. The fixing lugs each form a retaining end able to pass through a first part of a cutout when the aeraulic coupling 20 is translated along the extension axis A. The ring is then turned around the extension axis so as to position these retaining ends behind a second portion of a cutout of lower section at the retaining end so as to hold the airflow connector 20 fixed to the airflow box 28. The ring and the cutouts thus form a bayonet-type fastening system requiring a translation followed by a rotation to achieve the fixation, i.e. two movements.

When the locking member 66 is fixed relative to the coupling body 22, the fixing can be achieved by an elastic deformation of the main relief 71 and/or of the secondary relief 72. By way of example, the locking member 66 may include elastically deformable lugs configured to clip into cutouts made in the front wall 56 of the air box 28.

To guarantee a sufficient level of tightness, a separation of the flow of air circulating through the passage channel 48 can be carried out. For this, the second portion 46 (or the passage channel 48) forms an airtight collar 60 at the level of one end of this second portion 46. This collar 60 is intended to cooperate with a reception channel of the air flow 62 of the ventilation box 28. An additional physical obstacle is thus formed between the passage channel 48 and the electrical connector 50 so as to further limit the risk of stale air leaking towards the electrical connector 50. This flange 60 projects out of the support wall 54, preferably beyond the electrical connector 50 along the extension axis A.

The collar 60 is also formed so as to be in contact with a stud 73 carrying the electrical supply connector 52. The collar 60 is thus used for positioning the air connection 20 with respect to the air box 28.

An additional wall 70 is also formed on either side of the electrical connector 50 to limit the risks of indirect circulation of air towards the electrical connector 50. This additional wall 70 forms an additional obstacle to stale air.

The flange 60 and the additional wall 70 preferably form a closed contour. The collar 60 and the additional wall 70 are also preferably complementary in shape with an outline 74 of the channel for receiving the air flow 62 so as to obtain the desired seal between the passage channel 48 and the electrical connector 50.

To limit the risk of air circulation between the surrounding air and the electrical connector 50, a flexible sealing lip 76 is arranged on the ring of the airflow connector 20 and is intended to come into contact with the front wall 56 or a connecting piece. The electrical connector 50 is thus also isolated from the outside of the air connection 20.

To limit the risks of air circulation from the first portion 44 receiving the control box 42 towards the electrical connector 50, a support in complementary form can be made between the support wall 54 and the front wall 56 or the stud 73. In other words, the wall 54 from which the electrical connector 50 protrudes can comprise a shape capable of improving the seal when it is placed in support of the air box 28. This shape can for example be a conical shape cooperating with a conical shape produced by the stud 73 or the front wall 56. This support cone on cone is likely to limit the risk of air leaks.

The electrical connector 50 can thus be protected from leaks originating from the passage channel 48, from the outside at the periphery of the aeraulic connection 20 and from the first portion 44.

To connect the aeraulic connector 20 to the aeraulic box 28, the aeraulic connector 20 is aligned with the channel 62 for receiving the air flow from said aeraulic box 28. Then, the aeraulic connector 20 is moved up to the front wall 56 of the box aeraulic 20 so as to make the collar 60 and the additional wall 70 cooperate with the contour 74 of the channel for receiving the air flow 62. The movement is continued until the fixing lugs or main reliefs 70 cooperate with the reliefs secondary 72 of the air box 28. Simultaneously with this mechanical attachment, the electrical connector 50 is plugged into the power supply connector 52 of the air box 28.

In a single fixing step, the aeraulic, mechanical and electrical connection or connection of the aeraulic connection to the aeraulic box 28 is thus obtained.

A connection piece arranged between the aeraulic connector 20 and the aeraulic box 28 can be used to allow connection of aeraulic connectors 20 of different aeraulic diameters to the same box. aeraulic 28. Indeed, an aeraulic box 28 generally has connection orifices of the same aeraulic diameters. The connection piece thus makes it possible to connect an aeraulic connection with a greater aeraulic diameter to a connection orifice initially provided for a smaller aeraulic diameter. By way of example, the connection orifices 30 are configured for the connection of an aeraulic connection with an aeraulic diameter of 80 mm. The connection part can allow the connection of an air connection with an air flow diameter of 125 mm on this same connection orifice 30. The connection part makes it possible to form all or part of the geometries making it possible to protect the electrical connector 50 against leaks.

Claims (13)

Aeration connection (20) for connecting an aeration duct to an aeration box (28), for example a controlled mechanical ventilation box, comprising: - a modulating member (40) configured to modulate the airflow of an airflow flowing through said air connection, - a control unit (42) electrically connected to the modulating unit and configured to control said modulating unit, - an electrical connector (50) electrically connected to the control box and configured to connect to a power supply connector of an air box, - a system for attaching said aeration connector to an aeration box, the aeration connection being characterized in that the attachment system is configured to allow the attachment of said aeration connection to the aeration box simultaneously with the electrical connection of the electrical connector with a connector power supply. Air connector according to claim 1, wherein the fastening system is configured to allow simultaneous connection using at most two movements of said air connector. Airflow connector according to Claim 1 or 2, in which the electrical connector (50) is arranged at the level of a frontage of the airflow connector, the said frontage being intended to face the airflow box. Aeraulic coupling according to one of Claims 1 to 3, comprising an outer wall configured to receive and hold in position a portion of aeraulic duct and defining an aeraulic diameter, the modulation member and the control box being arranged inside of this aeraulic diameter. Airflow fitting according to any one of the preceding claims, in which an airflow channel is formed through the airflow fitting, the electrical connector being arranged outside the airflow channel to insulate the electrical connector of an air flow circulating through the passage channel. Aeraulic coupling according to Claims 4 and 5, in which the aeraulic diameter is divided so as to form a first portion receiving the control box and a second portion forming the passage channel for the air flow and intended to cooperate with a reception of the airflow from an air box, the electrical connector opening out at the end of said first portion. Aeraulic fitting according to Claim 5 or 6, in which the air flow passage channel forms an airtight collar at the level of one end of the air flow passage channel intended to cooperate with a channel for receiving the air flow from an aeraulic box. Airflow fitting according to any one of the preceding claims, in which said fastening system comprises a locking member (66) configured to be disposed in a position for locking the fitting on said airflow box. Aeration fitting according to claim 8, further comprising a fitting body, the locking member (66) being movable with respect to said fitting body between said locking position and an unlocking position. Aeraulic fitting according to claim 9, in which the locking member (66) is a rotatable ring, said ring comprising at least one main locking relief configured to cooperate with at least one secondary locking relief formed on the aeraulic box when the ring is in the locked position. Aeration kit comprising an aeration box (28), for example a controlled mechanical ventilation box, and at least one aeration connection (20) according to any one of the preceding claims, said aeration box comprising at least one electrical power connector, said at least one electrical power connector being configured to be arranged facing the electrical connector of the airflow connector when the airflow connector is attached to said airflow box. Aeration kit according to Claim 11, in which the electrical connector of the aeration connection and the power supply connector of the air box are configured to be in contact with each other when the air connection is attached to said air box. Method of connecting an aeraulic kit according to claim 11 or 12, comprising the following steps: - aligning said at least one aeration connection (20) with a channel for receiving the air flow from said aeration box, - inserting and connecting said at least one aeration box (20) to said aeration box (28) so that said aeration box is fixed to said aeration box simultaneously with the electrical connection of the electrical connector with said at least one power connector electric of the aeraulic box.

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