FR2969256A1 - Ventilation air flow distribution device for use in double flow controlled mechanical ventilation installation used to ventilate e.g. kitchen, has regulation device to regulate air flow from inlet orifice in flap distribution position - Google Patents

Abstract

The device (38) has a distribution flap (48) displaced between a first distribution position and a second distribution position (48-2) by an electric motor or a thermal actuator, to selectively communicate fluid between inlet orifices (36, 40) and between outlet orifices (42, 44), where the distribution flap is in the form of a slide-valve. The distribution flap comprises an air flow regulation device (50) that regulates or prevents regulation of flow of air from one of the inlet orifices in the respective distribution positions of the distribution flap. Independent claims are also included for the following: (1) a ventilation unit comprising an electric fan (2) a ventilation installation for a room, comprising a ventilation air flow distribution device (3) a method for regulating a ventilation installation.

Description

257 ATLC 1

DEVICE FOR DISTRIBUTING AIR FLOW, VENTILATION UNIT AND VENTILATION INSTALLATION

The present invention relates to a device for distributing an air flow, in a ventilation system, to a ventilation unit comprising this distribution device and to a ventilation system comprising this distribution device or this ventilation unit. . It is known a dual flow controlled mechanical ventilation installation comprising a flow distributor on the air extraction network of the installation. Such a flow divider is for example known from FR 2 855 251. When this installation comprises a heat exchanger between the inflow and the extracted flow, it is known to provide the installation with a branching unit, mounted on the network. insufflation. Such a branch unit generally comprises a movable shutter between two positions, thus enabling the fresh air to be controlled, to be blown, to pass or not through the heat exchanger where it exchanges calories with the extracted air. However, this installation is complex and bulky. In particular, it requires two separate distribution and derivation devices. As a result, two separate engines are required, one for the distributor and the other for the branch unit. The object of the present invention is to provide a device not having the disadvantages described above. To this end, the present invention proposes a device for distributing a ventilation air flow rate comprising: a first and a second inlet orifice, a first and a second outlet opening, a movable distributor flap between a first and, respectively, a second distribution position selectively allowing the communication of fluid between: - the first and second inlet ports, on the one hand, and - the first or, respectively, the second outlet orifice, on the other hand, the distribution flap being provided with an air flow control device adapted to regulate, in the first distributing flap distribution position, the flow of air coming from the first inlet orifice. According to preferred embodiments, the device may also include one or more of the following features, taken alone or in combination:

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- The distributor flap is further movable in a distribution position in which the distributor flap allows fluid communication only between the first and second inlet ports, on the one hand, and the first outlet port, on the other hand the air flow from the first inlet port not being regulated by the regulating device; in the second distributing flap distribution position, the air flow regulating device does not regulate the flow of air coming from the first inlet orifice; the distributor flap is furthermore displaceable in a distribution position, in which the distributor flap allows fluid communication between the first and second inlet ports, on the one hand, and the second outlet orifice, on the other hand, the air flow regulating device regulating the flow of air from the first inlet port; and the distributor flap is furthermore movable in a distribution position in which the distributor flap allows the communication of fluid only between the first inlet orifice on the one hand and the first outlet orifice on the other hand , the air flow from the first inlet orifice not being regulated by the regulating device. The invention also relates to a ventilation unit comprising a 20 in a housing, in which are formed first, second and third inputs and first and second outputs: - a motor-fan to create a first air flow between the first and second inputs, on the one hand, and the first output, on the other hand, - a fan motor for creating a second air flow between the third inlet and the second outlet, - a heat exchanger allowing a heat exchange between the first and second air streams, - a bypass duct of the heat exchanger in fluid communication with the first outlet, - a flow distribution device as described above in all its combinations whose first and second inlet ports are in fluid communication with the first and second inlets, respectively, and whose first and second outlets are in communication fluid with the heat exchanger and the bypass duct, respectively. The invention also relates to a ventilation installation of a room comprising at least one air extraction network from the room provided with a motor vehicle.

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exhaust fan and an air blowing system in the room provided with a motor blower fan, in which is provided a flow distribution device as described above in all its combinations. Preferably the flow distribution device is provided in the extraction network 5 of the ventilation installation of a room. The invention also relates to a ventilation installation of a room comprising a ventilation unit as described above in all its combinations. The invention also relates to a method of regulating a ventilation installation as described above in all its combinations, in which the setpoint of at least one of the motor-fans is modified according to the position of the fan. dispatch flap of the flow distribution device. Preferably, the opening of a network mouth or damper in fluid communication with the first or the second inlet of the flow distribution device is changed, depending on the position of the dispenser flap. debit. Other characteristics and advantages of the invention will appear on reading the following description of a preferred embodiment of the invention, given by way of example and with reference to the appended drawing. Figure 1 schematically shows a ventilation system. FIG. 2 schematically represents a ventilation unit comprising a device for distributing an air flow rate implemented in the ventilation installation of FIG. 1. FIG. 3 schematically represents a view from above of the unit of FIG. FIG. 4 and 5 show schematically a first example of a device for distributing a ventilation air flow rate that can be implemented in the ventilation unit of FIGS. 2 and 3, in a first and a second functional positions, respectively. FIGS. 6 to 8 schematically represent a second example of a ventilation air flow distribution device that can be implemented in the ventilation unit of FIGS. 2 and 3 in first, second and third positions. functional, respectively. FIGS. 9 to 12 diagrammatically show a third example of a ventilating air flow distribution device which can be implemented in the ventilation unit of FIGS. 2 and 3 in first, second, third and fourth functional positions, respectively.

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Figures 13 to 15 show schematically a fourth example of a ventilation air flow distribution device which can be implemented in the ventilation unit of Figures 2 and 3, in different functional positions. In the following, for the sake of clarity, it is placed in the case where the network 5 integrating the flow distribution device is the extraction network. However, this case should not be understood as being limiting. A ventilation system 10, as partially illustrated in FIG. 1, comprises a network 12 - here formed by a first duct 12a and a second duct 12b - for extracting air from premises 14a, 14b, 14c via mouths 15a, 15b, 15c they are variable rate, fixed rate, or the self-adjusting type. The ventilation system 10 also comprises an air blowing network in the premises, not shown here for the sake of clarity of the figure. For example, the room 14a can be a kitchen, the room 14b a bathroom and the local 14c sanitary. The extraction network is here provided with an exhaust fan motor 16 arranged in a ventilation unit 18. The ventilation unit 18 is illustrated in greater detail in FIGS. 2 and 3. The ventilation unit 18 is a box which may be integral or not, including the motor-exhaust fans 16 and insufflation 20, and a heat exchanger 22 which heats the air blown by means of the extracted air. A bypass duct 24 of the heat exchanger for the flow of exhaust air is also provided inside the ventilation unit 18. The ventilation unit 18 further comprises first and second inputs 26, 28 connected to each other. respectively to the first and second conduits 12a, 12b of the extraction network. The ventilation unit 18 also has a third inlet 30 connected to the insufflation network (not shown). The ventilation unit is provided with a first 32 and a second outlet 34 respectively associated with the extraction network 12 and the insufflation network. The second outlet 34 is connected to the third inlet 30 of the ventilation unit 18 via a pipe passing through the heat exchanger 22. A first pipe, issuing from the first inlet 26, joins a first inlet orifice 36 (see FIG. 4) of a distribution device 38. A second conduit, issuing from the second inlet 28, joins a second inlet port 40 (see FIG. 4) of the distribution device 38. Thus, the first inlet orifice 36 the distribution device 38 is in fluid communication with the kitchen 14a. The second inlet port 40 of the distribution device 38 is in turn in fluid communication with the bathroom 14b and sanitary 14c.

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The distribution device also comprises a first outlet orifice 42 connected to the duct of the unit allowing the flow of extracted air to pass through the heat exchanger 22. The distribution device 38 also comprises a second outlet orifice 44 connected to the duct 24 bypassing the airflow so that the flow of exhaust air 5 does not pass through the heat exchanger 22 and arrives directly at the outlet 32 of the ventilation unit 18. The distribution device 38 is arranged on the network extraction. This distribution device 38 is thus adapted to distribute the flow rate extracted by the exhaust fan motor resulting from the extraction flow Q1 from the kitchen 14a on the one hand and a flow rate of extraction Q2 from the bathroom 14b and the toilets 14c on the other hand. The distribution of the extracted air flow is controlled by an electronic control unit or electronic control module 46. The control module 46 is furthermore adapted to control the exhaust fan motor 16 and, possibly, the motorcycle. insufflation ventilator 20. The control module 46 can thus regulate and / or modulate the air flow of these motor-fans 16, 20 according to the ventilation requirement in the rooms to be ventilated, depending on the state of the ventilator. Distribution device 38. The need for ventilation can be identified by means of sensors located in the rooms to be ventilated, in the ventilation openings or in the extraction network, near the ventilation openings. The distribution device 38, as illustrated in FIGS. 4 and 5, comprises a distributor flap 48 which can be moved between two positions 481 and 482. In the first position 481, illustrated in FIG. fluid communication the first and second inlet ports 36, 40 of the distribution device 38 with the first outlet port 42 of the distribution device. Furthermore, in this first position 481, the air flow from the first inlet 36 of the regulator 38 passes through a flow control device 50 provided on the distribution flap 48. The flow control device 50 can take any form known to those skilled in the art. This is in this case a flexible blade partially closing an orifice, for example depending on the speed of the air passing through the orifice. The regulating device can in particular be of the type described in application FR-A-2 827 664. This first position of the distributor flap thus makes it possible to extract a regulated flow rate Q1 reg from the kitchen and a flow rate Q2 from the other parts, these two flows 35 then being directed to the heat exchanger 22 of the ventilation unit. This position is particularly interesting in the case where it is not ordered to extract a large flow of air from the kitchen.

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In the second position 482 of the distribution flap 48, illustrated in FIG. 5, the distribution flap 48 allows the communication of fluid between the first and second inlet openings 36, 40 of the distribution device 38 and the second outlet orifice 44. However, in this second position, the distribution flap 48 interrupts the fluid communication between the first and second inlet ports 36, 40 and the first outlet orifice 42. This second position of the distribution flap 48 thus makes it possible to extract a volume Q1. from the kitchen and Q2 volume from the other rooms and avoid the exchange of calories between the extracted air flow and the flow of air blown. This position 10 is particularly advantageous in the case where it is controlled the extraction of a large flow of air from the kitchen and in the case where the exchange of calories between the extracted air and the air blown n ' is not desired. In order to be able to achieve these two functional positions, the distribution flap 48 here has the shape of a ring section adapted to be displaced angularly in a circular duct 52 in which ducts coming from the first and second inlet openings 36 open, 40, on the one hand, and first and second outlet ports 42, 44, on the other hand. The distributor flap 48 has a curved surface 48s having two end portions 48s1, 48s2 full, surrounding an orifice in which the flow control device 50 is disposed. The distributing flap 48 further comprises a solid side surface 4811 and a side surface recess 4812. The distributor flap 48 is hollow. In its first position 481, the curved surface 48s of the flap is disposed opposite a duct coming from the first inlet orifice 36, so that the orifice in which the control device of Flow 50 faces the opening of the conduit from the first inlet port. The solid side surface 4811 is arranged to prevent air from the first and second inlet ports 36, 40, to reach the second outlet port 44. On the contrary, the recessed side surface 4812 is disposed on the first side. outlet port 42, 30 thereby allowing fluid communication between the first inlet port 36 and the first outlet port 42 via the flow control device and the hollow interior of the flow divider flap 48. The shutter The distributor 48 is further not interposed between the second inlet port 40 and the first outlet port 42, so that fluid communication between these two orifices is possible via the circular conduit 52. position 482, the distributor flap is moved angularly so that its second solid side surface 4811 is placed opposite the

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outlet, in the circular duct 52, the duct from the second inlet port 40. In this position 482 of the distributor flap 48, the orifice provided with the flow control device is vis-à-vis with a wall defining the Circular conduit 52. As a result, the fluid communication between the first and second inlet ports 36, 40, on the one hand, and the first outlet port 42, on the other hand, is interrupted. The first and second inlet ports 36, 40 are in fluid communication with the second outlet port, in which no air stream from one of these two inlet ports is regulated by the This control device thus makes it possible to fulfill the two functions of controlling the distribution of the extracted air flow as a function of the demand for a large extraction flow in the kitchen and for controlling the bypass of the heat exchanger. According to a particularly advantageous variant, the set point of the exhaust fan 16 and / or the blower 20 is changed depending on the position of the distributor flap in the air flow distribution device. This in particular makes it possible to achieve specific desired flow rates as a function of the flow rates of air to be extracted because of the actual need in the premises. Figures 6 to 8 illustrate a second embodiment of a distribution device. In the following, the elements of this second identical embodiment or function identical to the elements of the first embodiment of FIGS. 4 and 5 bear the same reference number increased by 100. These elements are not described in more detail in FIG. for the sake of clarity of the description. Indeed, the description of these elements can be taken from the description of the first embodiment. The distribution device 138 according to the second embodiment comprises a distributor flap 148 which can take first and second functional positions 1481, 1482 (illustrated in FIGS. 6 and 7) functionally identical to the first and second positions of the distributor flap 48 of the device distribution 38 according to the first embodiment. The distribution flap 148 of the distribution device 138 may, however, assume a third functional position 1483, illustrated in FIG. 8. In this third functional position, the distributor flap 148 is moved so as to allow fluid communication only between the first and second second inlet ports 136, 140, on the one hand, and the first outlet port 142 on the other hand, the air flow from the first inlet port not being regulated by the regulating device. In other words, in this third functional position 1483 of the distribution flap 148 of the distribution device 138, the first

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inlet port 136 is in fluid communication with the first outlet port 142 via a path that does not pass through the regulating device 150. Fluid communication between the first and second inlet ports 136, 140, d on the one hand, and the second outlet port 144 on the other hand is further interrupted. This third position thus allows to extract a large flow of air from the kitchen, when it is controlled, while allowing a calorie exchange between the extracted air and the air blown. Alternatively, the tundish is shaped to prevent fluid communication between the second inlet port and the first outlet port in this third position. Thus, it is carried out a transfer of flow of the sanitary to the kitchen to ensure the large kitchen flow, without a change of set point of the exhaust fan is necessary or, at least, a limited change in its magnitude, by example a flow variation of less than 30 m3 / h. In other words, in this new position, all the flow extracted is from the kitchen whereas in the other positions the flow is divided between the kitchen and the other rooms, thus making it possible to ventilate all the rooms of the kitchen. 'water. Of course the distributor flap can be shaped to be adapted to take the two positions mentioned in a variant. To be able to achieve this third functional position, the distributor flap 20 comprises, on its convex surface 148s a recessed surface 148s3 such that the solid surface 148s1 is between the recessed surface 148s3 and the orifice in which the flow control device 150 is formed. In the third position 1483 of the distributor flap 148 illustrated in FIG. 8, the recessed surface 148s3 of the distributor flap is disposed opposite the outlet in the circular duct 152 of the duct coming from the first inlet orifice 136. The solid side surface 14811 of the tundish flap 148 prevents fluid communication between the first and second inlet ports 136, 140 on the one hand and the second outlet port 144 on the other hand. The orifice in which the flow control device 150 is arranged is disposed opposite a wall delimiting the circular conduit 152. Thus, the first and second inlet orifices 136, 140 are in communication with each other. fluid with the first outlet 142, without any flow from the inlet ports 136, 140 being controlled by the flow control device 150. Figures 9-12 illustrate a third embodiment of a device of distribution. In the following, the elements of this second identical embodiment or function identical to the elements of the first or second embodiment of Figures 4 and 5 and Figures 6 to 8 bear the same reference numeral increased

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of 200 or 100, respectively. These elements are not described in more detail below for the sake of clarity of the description. Indeed, the description of these elements can be taken from the description of the first embodiment or the second embodiment. The distribution device 238 according to the third embodiment comprises a distributor flap 248 which can take first, second and third functional positions 2481, 2482, 2483 (illustrated in FIGS. 9, 10 and 11) functionally identical to the first, second and third position of the distribution flap 148 of the distribution device 138 according to the second embodiment. The distribution flap 248 of the distribution device 238, however, can assume a fourth functional position 2484, illustrated in FIG. 12. In this fourth functional position, the distribution flap 248 is displaced so as to allow the communication of fluid only between the first and the second. second inlet ports 136, 140, on the one hand, and the second outlet port 244 on the other hand, the air flow from the first inlet port being regulated by the regulating device 250. Another term, in this fourth functional position 2484 of the distributor flap 248 of the distribution device 238, the first inlet orifice 236 is in fluid communication with the first outlet 242 via a path which passes through the regulating device. 250. The fluid communication between the first and second inlet ports 236, 240 on the one hand, and the first outlet port 244 on the other hand is n additionally interrupted. In order to achieve this fourth functional position, as well as the other functional positions, the hollow distributor flap comprises on its curved surface a second recessed surface 248s4 opposite, on the lateral surface 248s, to the first recessed surface 248s3. This second recessed surface 248s4 here represents substantially half of the curved surface 248s. In addition, the two side surfaces 24811, 24812 of the distributor flap are solid. The first functional position, illustrated in FIG. 9, is realized because the orifice in which the flow control device is arranged is disposed opposite the outlet in the circular duct 252 (see FIG. ), the conduit from the first inlet port 236. This outlet is further partially blocked by the first and second solid surfaces 248s1 and 248s2. In this first functional position 2481 of the distributor flap 248, the second recessed surface 248s4 is disposed both facing the outlet of the duct 252 of the duct coming from the second inlet orifice, and R : ATLC32257--101217-dde patent pending tq.doc 21/12/2010 18:43:45 9/15 2969256 32257 ATLC 10

- Outlet, in the circular conduit 252, the conduit from the first outlet 242. Thus, the fluid communication is provided between the first and second inlet ports, on the one hand, and the first outlet port of 'somewhere else. The flow of air from the first inlet orifice is further regulated as it passes through the flow control device 250. The second function position 2482 of the distributor flap, illustrated in FIG. 10, is such that the air flows from the first and second inlets 236, 240 enter the divider flap through the second recessed surface 248s4 of the convex surface 248s and exit therethrough via the first recessed surface 248s3 toward the second port of exit. Fluid communication from the inlet ports to the first outlet port is interrupted by means of the second solid side surface 24812 which blocks the circular conduit 252. In addition, the flow control device 250 is disposed facing screw of a wall delimiting the circular duct 252 15 so that there is substantially no flow of air through it. The third function position 2482 of the distributor flap is such that the air flow from the first inlet orifice 236 enters the distributor flap through the first recessed surface 248s3 of the curved surface 248s. The air flow from the second inlet port 240 enters the tundish 248 through the second recessed surface 248s4 of the bent surface 248s. The two air flows out of the distributor flap 248 via the second recessed surface 248s4 towards the first outlet 242. The fluid communication from the inlet ports with the second outlet is interrupted by means of the first lateral surface. 24811 which blocks the circular duct 252. In addition, the flow control device 250 is disposed opposite a wall delimiting the circular duct 252 so that substantially no flow passes through it. air. Finally, in the fourth functional position 2484 of the distribution flap 248, the orifice in which the flow control device 250 is arranged is disposed opposite the outlet, in the circular duct 252, of the duct coming from the first duct 248. The second recessed surface 248s4 is disposed opposite the outlet, in the circular duct 252, of the duct coming from the second inlet orifice 240. The first lateral surface 24811 prevents the fluid communication of the ducts. two inlet ports 236, 240 with the first outlet port. Finally, the first recessed surface 248s3 is disposed opposite the second outlet 244. Thus, the first and second inlet ports are in fluid communication with the second outlet 244 such that the air flow from the first inlet 236 is controlled by the regulator 250.

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This fourth functional position of the distribution flap notably makes it possible to prevent the exchange of calories between the extracted air and the blown air, when the extraction of a large flow of air from the kitchen is not controlled, by allowing the flow of extracted air to be conducted in the bypass duct even if it is not controlled the extraction of a large flow of air from the kitchen. Of course, the present invention is not limited to the examples and embodiments described and shown, but it is capable of numerous variants accessible to those skilled in the art. According to the embodiments described, the distributor flap has a disc-shaped section and is angularly displaced in the distribution device. Of course, the splitter can take many other forms. In particular, the splitter can take the form of a drawer moved, for example, in translation. In this case, the position of the inlet and outlet ports are to be correspondingly positioned to achieve the operation described above. In addition, conduits can be formed in the distributor flap to more effectively direct the air flows and avoid turbulent flow losses. The positions of the inlet and outlet ports therefore have many possible variants to meet the same needs.

Furthermore, the movement of the distributor flap can be achieved by means of any device known to those skilled in the art. In particular, the tundish flap can be moved by means of an electric motor or a thermal jack. In addition, the positions of the flaps can be determined by means of well-known position sensors or as a function of the actuation times of the means used to move the distributor flap. The set point of the fan (s) can also be modified according to the position of the distributor panel. It is also possible to control one or more mouths of each of the networks depending on the position of the distributor flap in the flow distribution device.

Finally, the distribution device can be implemented in a ventilation network devoid of a ventilation unit, that is to say in which the various fans, the heat exchanger and the bypass duct would not be included. in a single common box. R: 132200A32257 ATLC32257--101217-d of patent filed tq.doc 21/12/2010 18:43:45 11/15

Claims (7)

REVENDICATIONS1. Apparatus (38; 138; 238) for distributing a ventilation air flow comprising: - a first (36; 136; 236) and a second (40; 140; 240) inlet ports; 42; 142; 242) and a second (44; 144; 244) outlet ports; - a distributor flap (48; 148; 248) movable between a first (481; 1481; 2481) and a second (482; 1482; 2482) distribution position selectively permitting fluid communication between: - the first and second inlet ports (36, 40; 136, 140; 236, 240), on the one hand, and - the first (42); 142, 242) or, respectively, the second (44; 144; 244) outlet orifice, on the other hand, the distributor flap (48; 148; 248) being provided with an air flow control device; (50; 150; 250) adapted to regulate, in the first distribution position (481; 1481; 2481) of the distributor flap (48; 148; 248), the flow of air from the first inlet port (36; 136 236). An apparatus according to claim 1, wherein the distributor flap (148; 248) is further movable in a distribution position (1483; 2483) in which the distributor flap (148; 248) allows fluid communication only between first and second inlet ports (136, 140; 236, 240), on the one hand, and the first outlet port (142; 242), on the other hand, the flow of air from the first port of input (136; 236) not being regulated by the regulating device (150; 250). 3. Device according to claim 1 or 2, wherein, in the second distribution position (482; 1482; 2482) of the distributor flap (48; 148; 248), the air flow regulating device (50; 150 250) does not regulate the flow of air from the first inlet (36; 136; 236). 4. Device according to one of the preceding claims, wherein the distributor flap (248) is further movable in a distribution position (2484), wherein the distributor flap (248) allows fluid communication between the first and second inlet ports (236, 240), on the one hand, and the second R: 132200A32257 ATLC32257--101217-d of patent filed tq.doc 21/12/2010 18:43:45 12/15 2969256 32257 ATLC 13 outlet port (244), on the other hand, the air flow regulating device (50) regulating the flow of air from the first inlet port (236). 5. Device according to any one of the preceding claims, wherein the distributor flap is further movable in a distribution position in which the distributor flap allows the communication of fluid only between the first inlet port, on the one hand , and the first outlet orifice, on the other hand, the air flow from the first inlet orifice not being regulated by the regulating device. 10 6. A ventilation unit (18) comprising in a housing, in which are formed first (26), second (28) and third (30) entries and first (32) and second (34) outputs: - a motorcycle fan (16) for creating a first air flow between the first and second inlets (26, 28), on the one hand, and the first outlet (32), on the other hand, - a motor fan (20) to create a second air flow between the third inlet (30) and the second outlet (34), - a heat exchanger (22) allowing a heat exchange between the first and second air flows, - a conduit (24) ) bypassing the heat exchanger (22) in fluid communication with the first outlet (32), - a flow distribution device (38; 138; 238) according to any one of the preceding claims, wherein the first and second inlet ports (36, 40; 136, 140; 236, 240) are in fluid communication with the first and second inlets (26, 28) , respectively, and whose first and second outlets (42, 44; 142, 144; 242, 244) are in fluid communication with the heat exchanger (22) and the bypass duct (24), respectively. 30 7. Ventilation installation (10) of a room (14a, 14b, 14c) comprising at least one air extraction network (12) from the room provided with a motor-exhaust fan (16) and an air insufflation network in the room provided with an insufflation motor-blower (20), in which a flow distribution device (38; 138; 238) according to any one of the preceding claims is provided; 1 to 5. R: 132200A32257 ATLC32257--101217-dde patented tq filed.doc 21/12/2010 18:43:45 13/15 15 202525 ATLC8. 9. 10. 11. 14 Ventilation installation of a room according to claim 7, wherein the flow distribution device (38; 138; 238) is formed in the extraction network (12). Ventilation installation of a room comprising a ventilation unit according to claim 6. A method of regulating a ventilation installation according to one of claims 7 to 9, wherein the setpoint of at least one of the motor-fans (16, 20) according to the position of the distributor flap of the flow distribution device (38; 138; 238). A method of regulating a ventilation installation according to one of claims 7 to 9, wherein the opening of a mouth or a register of the network in fluid communication with the first or the second port of inlet of the flow distribution device, depending on the position of the flow divider flap. R: 132200A32257 ATLC32257--101217-d of patent filed tq.doc 21/12/2010 18:43:45 14/15