Portion of an aircraft including a cabin air circulation system

Abstract

Aircraft portion comprising an air circulation system in the cabin. The aircraft portion (10) comprises: - a fuselage (12); - a partition wall (32); - a first piece of furniture (36A) arranged against the fuselage (12) in a first cabin portion (24A) and offset longitudinally from the partition wall (32); - an air circulation system (54) between the first cabin portion (24A) and a second cabin portion (24B), comprising: - a first connection device (56A) in aerodynamic communication with a first ambient air volume (26A) of the first cabin portion (24A); - a second connection device (56B) in aerodynamic communication with a second ambient air volume (26B) of the second cabin portion (24B); and - an intermediate circuit (80). The first connection device (56A) is included in the first unit (36A). See Figure 3 for abbreviations.

Description

Title of the invention: Portion of an aircraft comprising a cabin air circulation system

[0001] The present invention relates to an aircraft portion comprising:

[0002] - a fuselage delimiting a cabin extending along a longitudinal axis, the cabin comprising a first cabin section and a second cabin section;

[0003] - a partition wall mounted on the fuselage, extending substantially perpendicular to the longitudinal axis and separating the first cabin section and the second cabin section;

[0004] - at least one first piece of furniture arranged against the fuselage in the first portion of cabin and offset longitudinally from the partition wall;

[0005] - at least one air circulation system between the first portion of the cabin and the second section of the cabin, comprising:

[0006] - at least one first connection device in air communication with a first volume of ambient air from the first section of the cabin, defining a first connecting circuit;

[0007] - at least one second connection device in air communication with a second volume of ambient air from the second section of the cabin, defining a second connecting circuit; and

[0008] - an intermediate circuit connecting the first connecting device and the second connection device in air communication.

[0009] In such a portion of an aircraft, the air circulation system includes, for example:

[0010] - a first opening made in the partition wall on the side of the first section of cabin;

[0011] - a second opening made in the partition wall on the side of the second section of the cabin; and

[0012] - an obviously in the separating wall, connecting aeraulically the first and second openings.

[0013] In a conventional manner, the openings are for example covered with a grid in order to cover said openings, to reduce the transport of particles, such as dust, and to reduce the propagation of sounds somewhat.

[0014] However, such a portion of an aircraft is not entirely satisfactory.

[0015] In particular, even if the openings are covered, they remain visible to the passengers in the cabin. The aesthetic appearance of the partition wall is degraded.

[0016] Furthermore, the grilles are not sufficient to ensure good sound insulation between sections of the cabin. Thus, passengers in one section of the cabin may be disturbed by noise coming from the other section of the cabin.

[0017] The aim of the invention is therefore to propose a portion of an aircraft which ensures air circulation in the cabin while improving the aesthetics of the cabin interior and ensuring satisfactory sound insulation.

[0018] For this purpose, the invention relates to a portion of an aircraft of the aforementioned type, in which at least one first connecting device is included in at least one first piece of furniture.

[0019] Thanks to this feature, the aesthetics of the cabin interior are improved since the connecting device is integrated into the first piece of furniture. Furthermore, integrating the connecting device into the first piece of furniture improves sound insulation between the two sections of the cabin.

[0020] According to other advantageous aspects of the invention, the aircraft portion comprises one or more of the following features, taken individually or in all technically possible combinations:

[0021] - the fuselage includes a side skirt extending along the longitudinal axis between the first section of cabin and second section of cabin, at least one first piece of furniture being arranged against the side skirt, the side skirt at least partially delimiting the intermediate circuit;

[0022] - at least one first piece of furniture includes at least one outer wall delimiting at least partially a first interior furniture space, at least one exterior wall also delimiting at least partially:

[0023] - at least one air inlet opening of the first connecting fitting device aeraulically the first connecting circuit and the first ambient air volume of the first section of the cabin; and

[0024] - the first connecting circuit;

[0025] the side skirt comprising at least one air inlet of the intermediate circuit extending opposite at least one first piece of furniture and being aerodally connected to the first connecting circuit;

[0026] - at least one air inlet opening of the first connection device is delimited by at least one outer wall of the first piece of furniture and the side skirt of the fuselage;

[0027] - at least one outer wall of the first piece of furniture extends substantially along a furniture wall plane, the fuselage side skirt extending substantially along a skirt plane intersecting the furniture wall plane along a line of intersection, at least one air intake opening being a slot extending between at least one outer wall of the first piece of furniture and the side skirt of the fuselage along the line of intersection;

[0028] - the wall plane of the furniture is substantially orthogonal to the longitudinal axis of the cabin;

[0029] - the first connecting device comprises a first deflector extending from the side skirt of the fuselage in the first interior space of the furniture opposite at least one air inlet opening, according to a first deflector plane extending substantially parallel to the furniture wall plane, the first deflector of the first connecting device and at least one outer wall of at least one first piece of furniture delimiting between them a first section of the first connecting circuit;

[0030] - at least one first piece of furniture comprises at least one interior wall extending in the first interior space of the furniture substantially parallel to the first deflector so that the first deflector extends between at least one outer wall and at least one inner wall of at least one first piece of furniture, the first deflector and at least one inner wall of at least one first piece of furniture delimiting between them a second section of the first connecting circuit, the second section of the first connecting circuit being aeraulically connected to at least one air inlet of the intermediate circuit and to the first section of the first connecting circuit;

[0031] - the first connecting device includes a second deflector configured for guide the airflow circulating in the first section of the first connecting circuit to the second section of the first connecting circuit and vice versa;

[0032] - surfaces of the first connecting device and / or at least one first piece of furniture delimiting the first connection circuit are covered at least partially by a sound insulation coating;

[0033] - the aircraft portion further comprises at least one second piece of furniture against the fuselage in the second section of the cabin and offset longitudinally from the partition wall, at least one second connecting device being included in at least one second piece of furniture;

[0034] - at least a second piece of furniture is arranged against the side skirt, the circuit intermediate extending along the longitudinal axis between at least one first connecting device and at least one second connecting device.

[0035] The invention will become clearer upon reading the following description, given solely by way of non-limiting example, and made with reference to the drawings in which:

[0036] [Fig-1] - [Fig.1] is a schematic perspective representation of a portion aircraft according to the invention;

[0037] [Fig.2] - [Fig.2] is a schematic representation of a cross-section of the aircraft portion of [Fig.1], along the cross-section plane II-II;

[0038] [Fig.3] - [Fig.3] is a schematic representation of a section of the aircraft portion of [Fig.1], according to the section plane III-III.

[0039] With reference to Figures 1 to 3, an aircraft portion 10 according to the invention is described.

[0040] The aircraft portion 10 comprises a fuselage 12, a partition 32 mounted on the fuselage 12, at least one first piece of furniture 36A and at least one air circulation system 54.

[0041] Advantageously, the aircraft portion 10 further comprises at least one second piece of furniture 36B.

[0042] Even more advantageously, the aircraft portion 10 includes a floor 11.

[0043] The following describes an example of the invention in which the aircraft portion 10 comprises a single first piece of furniture 36A, a single air circulation system 54 and, where applicable, a single second piece of furniture 36B. Of course, the invention also applies in cases where the aircraft portion 10 comprises a plurality of first pieces of furniture 36A, a plurality of air circulation systems 54 and / or a plurality of second pieces of furniture 36B.

[0044] Furthermore, the following describes an example of the invention in which the airflow is from a first section of cabin 24A to a second section of cabin 24B. The terms "air inlet" and "air outlet" reflect this direction of flow. Of course, the invention also applies in the case where the airflow is from the second section of cabin 24B to the first section of cabin 24A. In this case, those skilled in the art will understand that the "air inlets" mentioned below become "air outlets" and vice versa.

[0045] The fuselage 12 delimits a cabin 24 extending along a longitudinal axis X-X'. The longitudinal axis X-X' is notably substantially parallel to the roll axis of the aircraft.

[0046] For example, the fuselage 12 includes a side wall 14 and a side skirt 16 extending along the longitudinal axis X-X' between a first cabin section 24A and a second cabin section 24B. In particular, the side skirt 16 extends from the side wall 14 of the fuselage 12 towards the floor 11.

[0047] In particular, with reference to [Fig.2], the side skirt 16 extends along a skirt plane PJ. For example, the skirt plane PJ is inclined with respect to a median sagittal plane of the fuselage 12.

[0048] For example, the side skirt 16 includes an upper portion 18 fixed to the side wall 14 of the fuselage 12 and a substantially flat lower portion 20 extending from the upper portion 18. In particular, the lower portion 20 extends along the skirt plane PJ.

[0049] Advantageously, the side skirt 16 delimits at least partially an intermediate circuit 80 of the air circulation system 54.

[0050] Further advantageously, the side skirt 16 includes at least one air inlet 82 of the intermediate circuit 80, extending opposite the first piece of furniture 36A and being aerodically connected to a first connecting circuit 58A of a first connecting device 56A of the air circulation system 54.

[0051] Further advantageously, the side skirt 16 includes at least one air outlet 84 of the intermediate circuit 80 extending opposite the second piece of furniture 36B and being aeraulically connected to a second connecting circuit 58B of a second connecting device 56B of the air circulation system 54.

[0052] Cabin 24 is delimited between floor 11 and fuselage 12.

[0053] Cabin 24 comprises the first portion of cabin 24A and the second portion of cabin 24B.

[0054] The first cabin portion 24A delimits a first ambient air volume 26A.

[0055] The second cabin portion 24B delimits a second ambient air volume 26B.

[0056] The separating wall 32 extends substantially perpendicularly to the longitudinal axis X-X' and separates the first cabin portion 24A and the second cabin portion 24B.

[0057] In particular, the partition wall 32 lacks an air circulation device between the first cabin section 24A and the second cabin section 24B. Specifically, the partition wall 32 lacks air circulation openings intended to allow air circulation between the first cabin section 24A and the second cabin section 24B, particularly when a door connecting the first cabin section 24A and the second cabin section 24B through the partition wall 32 is closed. "Air circulation openings" means openings in the partition wall 32 specifically designed for air circulation, such as, for example, ventilation grilles. Openings intended for other functions, such as for the passage of electrical or other cables, are not considered to be air circulation openings.

[0058] The first piece of furniture 36A is arranged against the fuselage 12, in particular against the side skirt 16, especially against the lower portion 18 of the side skirt 16, in the first cabin portion 24A.

[0059] For example, the first piece of furniture 36A is a chest of drawers, a sofa, a table, a bed, or any other piece of furniture typically installed in an aircraft cabin.

[0060] The first piece of furniture 36A is offset longitudinally from the partition wall 32. In other words, the first piece of furniture 36A and the partition wall 32 are separated along the longitudinal axis X-X' by a non-zero separation distance. Advantageously, the separation distance between the first piece of furniture 36A and the partition wall 32 is greater than or equal to 1 cm.

[0061] Advantageously, the first piece of furniture 36A includes at least one outer wall delimiting at least partially a first interior space of furniture 50A.

[0062] According to the example illustrated in Figures 1 to 3, the first piece of furniture 36A comprises:

[0063] - an upper outer wall 38A extending substantially parallel to the floor 11;

[0064] - an outer front wall 40A extending substantially perpendicularly to the upper outer wall 38A from the upper outer wall 38A towards the floor 11;

[0065] - a rear outer wall 42A extending substantially parallel to the plane of skirt PJ from the upper outer wall 38A to floor 11; and

[0066] - external lateral walls 44A extending substantially perpendicularly to the upper outer walls 38A, front 40A and rear 42A (only one lateral outer wall 44A is visible in figures 1 to 3).

[0067] Even more advantageously, with reference to [Fig.3], the first piece of furniture 36A further comprises at least one internal wall 48A.

[0068] At least one outer wall, in particular in the example of Figures 1 to 3 one or both of the outer lateral walls 44A, further delimits at least partially:

[0069] - at least one air inlet opening 64 of the first connection device 56A, connecting the first 58A connection circuit and the first 26A ambient air volume via an air supply; and

[0070] - the first 5 8A connection circuit.

[0071] For example, at least one outer wall, in particular the outer side wall 44A, extends substantially along a first wall plane of furniture PMA.

[0072] In particular, the wall plane of the PMA furniture is substantially orthogonal to the longitudinal axis X-X' of the cabin 24.

[0073] As will be described in more detail below, at least one outer wall, in particular the outer side wall 44A, delimits with a first deflector 66A of the first connection device 56A a first section 60A of the first connection circuit 58A.

[0074] With reference to [Fig.3], at least one inner wall 48A extends into the first inner space of the cabinet 50A. In particular, at least one inner wall 48A extends from the front outer wall 40A to the rear outer wall 42A of the first cabinet 36A.

[0075] In particular, at least one inner wall 48A extends substantially parallel to the first deflector 66A. For example, at least one inner wall 48A extends substantially parallel to the first wall plane of furniture PMA.

[0076] As will be described in more detail below, at least one inner wall 48A delimits with the first deflector 66A of the first connecting device 56A a second section 62A of the first connecting circuit 58A.

[0077] The second piece of furniture 36B is arranged against the fuselage 12, in particular against the side skirt 16, in the second portion of the cabin 24B.

[0078] For example, the second piece of furniture 36B is a chest of drawers, a sofa, a table, a bed, or any other piece of furniture typically installed in an aircraft cabin.

[0079] The second piece of furniture 36B is offset longitudinally from the partition wall 32. In other words, the second piece of furniture 36B and the partition wall 32 are separated along the longitudinal axis X-X' by a non-zero separation distance. Advantageously, the separation distance between the second piece of furniture 36B and the partition wall 32 is greater than or equal to 1 cm.

[0080] Advantageously, the second piece of furniture 36B includes at least one outer wall delimiting at least partially a second interior space of furniture 50B.

[0081] According to the example illustrated in Figures 1 and 3, the second piece of furniture 36B comprises:

[0082] - an upper outer wall 38B extending substantially parallel to the floor 11;

[0083] - an outer front wall 40B extending substantially perpendicularly to the upper outer wall 38B from the upper outer wall 38B towards the floor 11;

[0084] - a rear outer wall 42B extending substantially parallel to the plane of skirt PJ from the upper outer wall 38B to floor 11; and

[0085] - external lateral walls 44B extending substantially perpendicularly to the upper outer walls 38B, front 40B and rear 42B (only one lateral outer wall 44B is visible in figures 1 and 3).

[0086] Even more advantageously, with reference to [Fig.3], the second piece of furniture 36B further comprises at least one internal wall 48B.

[0087] At least one outer wall, in particular in the example of Figures 1 and 3 one or both of the outer lateral walls 44B, further delimits at least partially:

[0088] - at least one air outlet opening 65 of the second connection device 56B, connecting the second connecting circuit 58B and the second ambient air volume 26B via an air supply; and

[0089] - the second connection circuit 58B.

[0090] For example, at least one outer wall, in particular the outer side wall 44B, extends substantially along a second wall plane of furniture PMB.

[0091] In particular, the second wall plane of PMB furniture is substantially orthogonal to the longitudinal axis X-X' of cabin 24.

[0092] As will be described in more detail below, at least one outer wall, in particular the outer side wall 44B, delimits with a first deflector 66B of the second connecting device 56B a first section 60B of the second connecting circuit 58B.

[0093] With reference to [Fig.3], at least one inner wall 48B extends into the second inner cabinet space 50B. In particular, at least one inner wall 48B extends from the front outer wall 40B to the rear outer wall 42B.

[0094] In particular, at least one inner wall 48B extends substantially parallel to the first deflector 66B. For example, at least one inner wall 48B extends substantially parallel to the second wall plane of furniture PMB.

[0095] As will be described in more detail below, at least one inner wall 48B delimits with the first deflector 66B of the second connecting device 56B a second section 62B of the second connecting circuit 58B.

[0096] System 54 is an air circulation system between the first cabin section 24A and the second cabin section 24B.

[0097] The air circulation system 54 includes at least one first connection device 56A, at least one second connection device 56B and the intermediate circuit 80.

[0098] In what follows, only one first connecting device 56A and one second connecting device 56B are described. Of course, the description also applies to several first connecting devices 56A and / or several second connecting devices 56B.

[0099] Advantageously, the air circulation system 54 further includes an air circulation device (not shown) configured to circulate air from at least one first connection device 56A to at least one second connection device 56B through the intermediate circuit 80, or vice versa. The at least one air circulation device includes, for example, at least one fan.

[0100] The first connecting device 56A is in aerodynamic communication with the first ambient air volume 26A of the first cabin portion 24A.

[0101] The first connection device 56A delimits the first connection circuit 58.

[0102] The first 56A connection device is included in the first 36A unit.

[0103] The first 56A connection device includes at least one inlet opening air 64.

[0104] Advantageously, the first connecting device 56A further includes the first deflector 66A (visible in [Fig.3]).

[0105] Even more advantageously, the first connecting device 56A further includes a second deflector 68A (visible in [Fig.3]).

[0106] As illustrated in Figures 2 and 3, at least one air inlet opening 64 is delimited by at least one outer wall of the first furniture 36A, in particular the outer side wall 44A, and the side skirt 16 of the fuselage 12, in particular the lower portion 20 of the side skirt 16.

[0107] As seen in [Fig. 2], at least one air inlet opening 64 is a slot extending between at least one outer wall of the first cabinet 36A, in particular the outer side wall 44A, and the side skirt 16 of the fuselage 12, in particular the lower portion 20 of the side skirt 16, along a first line of intersection DIA. The first line of intersection DIA is defined by the intersection between the skirt plane PJ and the first cabinet wall plane PMA.

[0108] With reference to the example in [Fig.3], the first deflector 66A extends from the side skirt 16 of the fuselage 12 into the first interior furniture space 50A opposite at least one air inlet opening 64, along a first plane of first deflector PDI A extending substantially parallel to the first plane of furniture wall PMA.

[0109] The first deflector 66A and at least one outer wall, in particular the outer side wall 44A, delimit between themselves the first section 60A of the first connecting circuit 5 8A.

[0110] Advantageously, the first deflector 66A extends between at least one outer wall, in particular the outer side wall 44A, and at least one inner wall 48A of the first piece of furniture 36A.

[0111] In particular, the first deflector 66A and at least one inner wall 48A delimit between themselves the second section 62A of the first connecting circuit 5 8A.

[0112] Advantageously, the second section 62A of the first connecting circuit 58A is aeraugically connected to at least one air inlet 82 of the intermediate circuit 80 and to the first section 60A of the first connecting circuit 58A. In particular, the second section 62A aeraugically connects the first section 60A and at least one air inlet 82 of the intermediate circuit 80.

[0113] The second deflector 68A is configured to guide the airflow circulating in the first section 60A to the second section 62A and vice versa.

[0114] As illustrated in the example in [Fig. 3], the first connecting circuit 58A has a general shape, according to a cross-sectional plane substantially parallel to the floor 11, in the form of a baffle. To reach the air inlet 82 of the intermediate circuit 80, the air entering through the air inlet opening 64 into the first section 60A of the first connecting circuit 58A must first bypass the first deflector 66A to enter the second section 62A of the first connecting circuit 58A.

[0115] Advantageously, as illustrated in [Fig.3], surfaces 70A of the first connecting device 56A and / or of the first piece of furniture 36A, delimiting the first connecting circuit 58A are covered at least partially by a sound insulation coating 72A.

[0116] In particular, the surfaces of:

[0117] - at least one outer wall, in particular the outer side wall 44A; and / or

[0118] - at least one internal wall 48A; and / or

[0119] - the first deflector 66A; and / or

[0120] - the second deflector 68A; and / or

[0121] delimiting the first and second sections 60A, 62A of the first connecting circuit 58A are covered at least partially, in particular entirely, by the sound insulation coating 72A.

[0122] The second connecting device 56B is in aerodynamic communication with the second ambient air volume 26B of the second cabin portion 24B.

[0123] The second connecting device 56B delimits the second connecting circuit 58B.

[0124] The second connecting device 56B is included in the second piece of furniture 36B.

[0125] The second connection device 56B includes at least one outlet opening 65 air.

[0126] Advantageously, the second connecting device 66B further includes the first deflector 66B (visible in [Fig.3]).

[0127] Even more advantageously, the second connecting device 66B further includes a second deflector 68B (visible in [Fig.3]).

[0128] As illustrated in [Fig.3], at least one air outlet opening 65 is delimited by at least one outer wall of the second cabinet 36B, in particular the outer side wall 44B, and the side skirt 16 of the fuselage 12, in particular the lower portion 20 of the side skirt 16.

[0129] As seen in [Fig. 3], at least one air outlet opening 65 is a slot extending between at least one outer wall of the second cabinet 36B, in particular the outer side wall 44B, and the side skirt 16 of the fuselage 12, in particular the lower portion 20 of the side skirt 16, along a second line of intersection DIB. The line of intersection DIB is defined by the intersection between the skirt plane PJ and the second cabinet wall plane PMB.

[0130] With reference to the example in [Fig.3], the first deflector 66B extends from the side skirt 16 of the fuselage 12 into the second interior furniture space 50B opposite at least one air outlet opening 65, along a second plane of first deflector PDI B extending substantially parallel to the second furniture wall plane PMB.

[0131] The first deflector 66B and at least one outer wall of the second piece of furniture 36B delimit between them the first section 60B of the second connecting circuit 58B.

[0132] Advantageously, the first deflector 66B extends between at least one outer wall of the second piece of furniture 36B and at least one inner wall 48B of the second piece of furniture 36B.

[0133] In particular, the first deflector 66B and at least one inner wall 48B delimit between themselves the second section 62B of the second connecting circuit 58B.

[0134] Advantageously, the second section 62B of the second connecting circuit 58B is aerodynamically connected to at least one air outlet 84 of the intermediate circuit 80 and to the first section 60B of the second connecting circuit 58B. In particular, the second section 62B aerodynamically connects the first section 60B and at least one air outlet 84 of the intermediate circuit 80.

[0135] The second deflector 68B is configured to guide the airflow circulating in the second section 62B to the first section 60B and vice versa.

[0136] As illustrated in the example of [Fig. 3], the second connecting circuit 58B has a general shape, according to a cross-sectional plane substantially parallel to the floor 11, in the form of a baffle. To reach the air outlet opening 65 of the second connecting device 56B, the air entering through the air outlet 84 of the intermediate circuit 80 into the second section 62B of the second connecting circuit 58B must first bypass the first deflector 66B to enter the first section 60B of the second connecting circuit 58B.

[0137] Advantageously, as illustrated in [Fig.3], surfaces 70B of the second connecting device 56B and / or of the second piece of furniture 36B, delimiting the second connecting circuit 58B are covered at least partially by an acoustic insulation coating 72B.

[0138] In particular, the surfaces of:

[0139] - at least one outer wall, in particular the outer side wall 44B; and / or

[0140] - at least one inner wall 48B; and / or

[0141] - the first deflector 66B; and / or

[0142] - the second deflector 68B; and / or

[0143] delimiting the first and second sections 60B, 62B of the second connecting circuit 58B are covered at least partially, in particular entirely, by the acoustic insulation coating 72B.

[0144] The intermediate circuit 80 connects aeraulically the first connecting device 56A, in particular the first connecting circuit 58A, and the second connecting device 56B, in particular the second connecting circuit 58B.

[0145] Advantageously, the intermediate circuit 80 extends along the longitudinal axis X-X' from the first connecting device 56A to the second connecting device 56B.

[0146] The intermediate circuit 80 includes at least one air inlet 82, at least one air outlet 84 and an air circulation passage 86 aeraulically linking at least one air inlet 82 and at least one air outlet 84.

[0147] With reference to the example in [Fig.3], the air circulation passage 86 is delimited by the side skirt 16 and the side wall 14 of the fuselage 12 and extends along the longitudinal axis X-X' from at least one air inlet 82 and at least one air outlet 84.

[0148] The following describes the operation of the aircraft portion 10 as described above.

[0149] For example, the air circulation device (not shown) circulates air from the first connection device 56A to the second connection device through the intermediate circuit 80.

[0150] The air from the first ambient air volume 26A is then drawn through the air inlet opening 64A of the first connecting device 56A. The aspirated air then flows through the first section 60A of the first connecting circuit 58A in a first general direction DI and then through the second section 62A of the first connecting circuit 58A in a second general direction D2 opposite to the first general direction DI to reach the air inlet 82 of the intermediate circuit 80. The air then flows through the air circulation passage 86 to the air outlet 84 of the intermediate circuit 80. The air then enters the second section 62B of the second connecting circuit 58B, flows through the second section 62B in the first general direction DI and is then conveyed through the first section 60B of the second connecting circuit 58B in the second general direction D2 to reach the air outlet opening 65 of the second connecting device 56B.Air then enters via the air outlet opening 65 into the second cabin section 24B to be added to the second ambient air volume 26B.

[0151] Thanks to the invention, the aesthetics of the first and second cabin sections 24A, 24B are improved since the connection devices are integrated respectively into the first cabinet 36A and the second cabinet 36B. In particular, the air inlet 64 and air outlet 65 openings are discreet because they are arranged between the side skirt 16 and the outer side wall 44A, 44B of the cabinet and are in the form of a slot. The invention thus eliminates the need for any air circulation device mounted on the partition wall 32. The appearance of the partition wall 32 is thereby improved.

[0152] This integration also improves sound insulation between the two cabin sections 24A, 24B. In particular, the specific baffled shape of the first and second connecting circuits 58A, 58B increases sound insulation. The acoustic insulation lining further enhances this sound insulation.

Claims

Demands

1. Portion of aircraft (10) comprising: - a fuselage (12) delimiting a cabin (24) extending along a longitudinal axis (X-X'), the cabin (24) comprising a first cabin portion (24A) and a second cabin portion (24B); - a partition wall (32) mounted on the fuselage (12), extending substantially perpendicularly to the longitudinal axis (X-X') and separating the first cabin portion (24A) and the second cabin portion (24B); - at least one first piece of furniture (36A) arranged against the fuselage (12) in the first cabin portion (24A) and offset longitudinally from the partition wall (32); - at least one air circulation system (54) between the first cabin section (24A) and the second cabin section (24B), comprising: - at least one first connection device (56A) in aerodynamic communication with a first volume of ambient air (26A) of the first cabin section (24A), delimiting a first connection circuit (58A);- at least one second connection device (56B) in aerodynamic communication with a second ambient air volume (26B) of the second cabin portion (24B), delimiting a second connection circuit (58B); and - an intermediate circuit (80) connecting the first connection device (56A) and the second connection device (56B) in aerodynamic communication; characterized in that the at least one first connection device (56A) is included in the at least one first piece of furniture (36A).

2. Portion of aircraft (10) according to claim 1, in which the fuselage (12) includes a side skirt (16) extending along the longitudinal axis (X-X') between the first cabin portion (24A) and the second cabin portion (24B), at least one first piece of furniture (36A) being arranged against the side skirt (16), the side skirt (16) delimiting at least partially the intermediate circuit (80).

3. Portion of aircraft (10) according to claim 2, wherein at least one first piece of furniture (36A) comprises at least one outer wall delimiting at least partially a first space interior of furniture (50A), at least one exterior wall further delimiting at least partially: - at least one air inlet opening (64A) of the first connection device (56A) connecting aeraulically the first connection circuit (58A) and the first ambient air volume (26A) of the first cabin portion (24A); and - the first connection circuit (58A); the side skirt (16) comprising at least one air inlet (82) of the intermediate circuit (80) extending opposite at least one first piece of furniture (36A) and being aeraulically connected to the first connection circuit (58A).

4. Portion of aircraft (10) according to claim 3, wherein at least one air inlet opening (64) of the first connecting device (56A) is delimited by at least one outer wall of the first furniture (36A) and the side skirt (16) of the fuselage (12).

5. Portion of aircraft (10) according to claim 4, wherein at least one outer wall of the first piece of furniture (36A) extends substantially along a wall plane of furniture (PMA), the side skirt (16) of the fuselage (12) extending substantially along a skirt plane (PJ) intersecting the wall plane of furniture (PMA) along a line of intersection (DIA), at least one air inlet opening (64) being a slot extending between at least one outer wall of the first piece of furniture (36A) and the side skirt (16) of the fuselage (12) along the line of intersection (DIA).

6. Portion of aircraft (10) according to claim 5, wherein the furniture wall plane (PMA) is substantially orthogonal to the longitudinal axis (X-X') of the cabin (24).

7. Portion of aircraft (10) according to claim 5 or 6, wherein the first connecting device (56A) comprises a first deflector (66A) extending from the side skirt (16) of the fuselage (12) into the first interior furniture space (50A) opposite at least one air inlet opening (64), along a first deflector plane (PDA) extending substantially parallel to the furniture wall plane (PMA), the first deflector (66A) of the first connecting device (56A) and at least one outer wall of at least one first furniture (56A) delimiting between them a first section (60A) of the first connecting circuit (58A).

8. Portion of aircraft (10) according to claim 7, wherein at least one first piece of furniture (36A) comprises at least one inner wall (48A) extending into the first interior space of furniture (50A) substantially parallel to the first deflector (66A) such that the first deflector (66A) extends between at least one outer wall and at least one inner wall (48A) of at least one first piece of furniture (36A), the first deflector (66A) and at least one inner wall (48A) of at least one first piece of furniture (36A) delimiting between them a second section (62A) of the first connecting circuit (58A), the second section (62A) of the first connecting circuit (58A) being aerodynamically connected to at least one air inlet (82) of the intermediate circuit (80) and to the first section (60A) of the first connection circuit (58A).

9. Portion of aircraft (10) according to claim 8, wherein the first connecting device (56A) comprises a second deflector (68A) configured to guide the airflow circulating in the first section (60A) of the first connecting circuit (58A) to the second section (62A) of the first connecting circuit (58A) and vice versa.

10. Portion of aircraft (10) according to any one of the preceding claims, wherein surfaces (70A) of the first connecting device (56A) and / or of at least one first piece of furniture (36A) delimiting the first connecting circuit (58A) are covered at least partially by a sound insulation coating (72A).

11. Portion of aircraft (10) according to any one of the preceding claims, further comprising at least one second piece of furniture (36B) arranged against the fuselage (12) in the second cabin portion (24B) and offset longitudinally from the partition wall (32), at least one second connecting device (56B) being included in at least one second piece of furniture (36B).

12. Portion of aircraft (10) according to claim 11 when taken in combination with claim 2, wherein at least one second piece of furniture (36B) is arranged against the side skirt (16), the intermediate circuit (80) extending along the longitudinal axis (X-X') between at least one first connecting device (56A) and at least one second connecting device (56B).

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