FR2839143A1 - Building air conditioning or heating system has distribution unit that mixes recycled and fresh air - Google Patents

Abstract

The system, comprising an inner (3) and outer (2) unit with ducts (4) and electric fans, with intakes, blowers and a control unit, includes an air distributor (1) on the downstream side of the inner unit (3) blower for selective distribution of air to certain rooms or groups of rooms. At least part of the air in the system is recycled, being heated or cooled as required in the inner unit before being re-distributed round the system at a rate and temperature determined by a thermostat control panel.

Description

formed from a material chosen from ABS and SAN.

  (The present invention relates to an air distribution unit for a reversible air / air conditioning installation of direct expansion of the "ductable" type. By reversible air conditioning is meant a thermodynamic device S, that is to say operating by heat exchange between fluids, which cools the interior of the building in summer, but which can be reversed in winter to heat the interior of the building. "Direct expansion" means a device in which the heat transfer fluid which circulates in the fluidic connections, is injected directly into the heat exchangers (evaporator and condenser). Such a system being opposed to a device in which water circulates in the fluidic connections and the evaporator, and is cooled in air conditioning operation, or heated in heating operation, moreover. "Ductable" means an air conditioning device in which the heat treated air is routed through a network of conduits (or ducts) allowing the

  selective air distribution to certain places in the building.

  The invention also relates to a method and a device for air conditioning and / or heating a building comprising at least one utility room (kitchen, bathroom, toilet, etc.) and at least one main room (living room , living room, bedroom, living room, office ...) equipped with such a block. It also extends to heating and / or air conditioning of buildings comprising several groups of rooms, for example apartments, individual houses, apartment buildings, accommodation buildings (hotels, retirement homes), apartment buildings.

offices.

  This invention further relates to an air distribution and / or mixing block for air conditioning / heating device, a device equipped with such a block, and an air conditioning and / or heating method allowing, in addition to this heating and / or this air conditioning, to manage the supply of fresh air in all seasons - i.e. extracted from the outside

  of the building - required by the regulations in force.

  Typically, the most conventional system consists of treating the ventilation of fresh air with a system independent of the thermodynamic air conditioning / heating system. The fresh air ventilation is then treated with a conventional system, type VMC (Controlled Mechanical Ventilation) single flow comprising fresh air inlets in the main room (s) and air extraction vents. stale air in the technical room (s). However, this solution is not very effective. In fact, the association of a single flow type VMC with a reversible thermodynamic air / air conditioning system with direct expansion of the duct type, can generate aeraulic disturbances with the air inlets located in each main room. Indeed, if the air flow blown into a main room becomes too high, the room may be overpressure, and at that time, the fresh air intake of the single-flow VMC system which is located on the front of the building, becomes an air outlet: the renewal of fresh air inside the overpressure room is no longer done. For these reasons, the main solution currently proposed is to use dual-flow VMC systems. With this system, there is no entry of fresh air into the main rooms from the facade of the building. The extraction is carried out as in single-flow in the service rooms, and the blowing of fresh air is done from a single entry most often located under the eaves or on the roof, up to

  the main rooms by a network of conduits connected to a motor-

  fan. However, this solution turns out to present a significant cost price due to the need to multiply groups and ventilation ducts. When such a double-flow system must be used with a reversible ducted thermodynamic air conditioning unit, it quickly comes to mind to try to deal with ventilation, that is to say the air supply. new from the outside in the same air distribution network to the main rooms: this avoids clutter and the additional cost linked to a double network and two blowing terminals per room. In practice, known systems use a supply of fresh air upstream of the centralized thermodynamic machine inside the building, commonly called "indoor unit". The indoor unit includes a heat exchanger acting as an evaporator when the system is operating in air conditioning, and a condenser when the system is reversed in heating mode. The indoor unit also includes blowing means making it possible to supply the air treated by the exchanger, as well as the fresh air supplied upstream of the exchanger, through the air distribution network of the

building.

  Such a reversible air conditioning system of the duct type, to which is connected upstream of the indoor unit a supply of fresh air from a dual-flow CMV, has a major disadvantage: if the temperature control of each room is done by an "all-or-nothing" or even variable register, it turns out to be impossible according to this technique to modulate the flow rates blown into the main rooms as a function of the fresh air supply needs of said rooms. Indeed, it is materially impossible to distribute the fresh air flow equitably room by room. In addition, the shutdown of the heating and / or air conditioning device by the requesting means, in particular in mid-season, or else the closing of one or more air outlets leads to interrupting any renewal of air in all the rooms or in the room (s) concerned because the supply of fresh air is physically dependent on the supply of heat treated air by the indoor unit. Thus, no current heating and / or air conditioning device with variable flow is capable of ensuring room by room management of both the thermal and the fresh air. In this case, the ventilation of fresh air in the building does not comply with the regulations which impose a minimum air renewal

  in every inhabited room of a building.

  A solution has been proposed to achieve a minimum ventilation of fresh air, while using the same insufflation network for the heat treated air coming from the indoor unit of the air conditioning / heating system. This system is described in international patent application WO 99/57491, filed on May 4, 1999. This document describes the "bulk" distribution in false ceilings of a building (called "distribution plenum"), of a mixture of fresh air, and air taken back inside the building, all of which is heat treated by the indoor unit of a reversible air / air type thermodynamic air conditioning system. The thermal demand of each room in the building depends on the outside temperatures, while the need for fresh air ventilation remains fixed or at least equal to a minimum value corresponding to the regulations. Depending on the opening of each of the air vents connected to the air distribution plenum, the amount of associated fresh air is therefore fluctuating. The aforementioned patent therefore consists in accounting for the supply of fresh air in each room over a given period, then adjusting the difference by temporary and localized over-ventilation to the room (s) in room (s) lacking fresh air. . Such a device requires complex electronic installation and programming, in order to reconcile the production of heat-treated air in variable volumes, while simultaneously and independently respecting a minimum but variable flow of ventilated air. In addition, this solution requires an energy-intensive over-ventilation to achieve the statutory ventilated air flows, due to the

  frequent readjustments necessary.

  The main objective of the present invention is to provide a heating and / or air conditioning method and device making it possible to manage the fresh ventilation air, room by room, in accordance with the regulations in force, and remedying the defects of the

  known installations described above.

  Another objective of the invention is to make it possible to increase the renewal of fresh air in a room when the latter is heavily occupied or smoky, and this without deficit of supply of fresh air in

the other parts.

  The aforementioned objects of the invention are achieved with a distribution block for a reversible air conditioning device allowing the cooling or heating of a building, said device comprising: (i) an indoor unit and an outdoor unit connected by fluidic connections and electric, said indoor unit comprising ventilation means and a heat exchanger, said outdoor unit comprising ventilation means, a heat exchanger and a compressor, (ii) air intake means inside the building located in upstream of the indoor unit and connected to it, and means for blowing air treated thermally by the indoor unit located downstream of said unit and connected to it, (iii) at least one automatic temperature control inside the building capable of controlling the operation of the outdoor and indoor units, as well as the various valves required lant air flows circulating in the building, said air distribution block being connected to the reversible air conditioning device downstream of the blowing means of the indoor unit and may be suitable for the selective distribution of air in certain rooms of the building, characterized in that it comprises at least one air distribution module allowing the distribution in a room or a group of rooms of the building corresponding to said module: (a) of air heat treated by the indoor unit, of which the quantity and the temperature are determined and adjustable thanks to a thermostat located in said room or group of rooms, and simultaneously, (b) of fresh air taken outside the building, in a determined and adjustable quantity independently of the heat treated air thanks to means for modulating the quantity of fresh air, these means comprising a programmer with a set value corresponding to a ventilation flow minimum regulatory requirement, and / or a room humidity sensor, and / or a CO2 rate sensor, and / or a detector of the presence of people in the room or group of rooms, said modulation means being connected to the control body

  automatic temperature inside the building.

  Advantageously, each module of the air distribution and / or mixing block according to the invention comprises a chamber with: (a) an inlet of heat treated air coming from the internal unit of the air conditioning device, at temperature controlled by the thermostat and at a rate controlled by the more or less large opening of a valve controlled by the thermostat, and (b) a supply of fresh air coming from outside the building, at a rate controlled by the more or less large opening of a valve controlled by the programmer, and / or the humidity and / or CO2 sensors and / or the presence detector, and (c) an air outlet towards the piece or group of

parts corresponding to said module.

  Also preferably, the fresh air coming from the outside and supplied to the distribution and / or mixing block is filtered upstream.

of said block.

  In addition, the fresh air coming from the outside is advantageously heat treated upstream of the distribution block.

  The invention will be clearly understood with the aid of the detailed description

  which follows, and with reference to the appended schematic drawing representing by way of nonlimiting examples several embodiments of a reversible air conditioning device of a building comprising an air distribution block according to the invention: Figure 1 is a perspective view from above showing a building equipped with a reversible air conditioning device to which an air distribution unit is coupled according to the invention, the extraction being provided by

  a single flow motor-fan unit.

  Figure 2 is a variant of Figure 1 with a breakdown

  ensured by a double-flow system.

  Figure 3 is a partially cut perspective view

  of an air distribution block according to the invention.

  Figure 4 is a cross-sectional view of a module of the block

  air distribution according to the invention.

  The present invention relates firstly to an air distribution unit 1 allowing the distribution of heat treated air by an air conditioning device, to rooms or groups of rooms of a building. By building is meant private accommodation such as an apartment or a detached house, but it can also be a public building such as a factory, hotel,

  retreat, or buildings for teaching.

  The air conditioning device to which the air distribution unit 1 according to the invention is to be connected, is an air conditioning device

  reversible air / air direct expansion type "duct".

  The reversible air conditioning device comprises an outdoor unit 2 and an indoor unit 3 connected by fluidic and electrical connections 4. Fluidic connections are understood to be thermally insulated pipes 4 which contain a heat transfer fluid making it possible to transport, with a minimum of losses, calories between the indoor unit 3 and the outdoor unit 2. The outdoor unit 2 comprises a heat exchanger which acts as a condenser in summer when the device is used in air conditioner mode, and as an evaporator in winter when the device is used in heat pump mode for building heating. The outdoor unit 2 also includes ventilation means making it possible to circulate the outside air through the heat exchanger, and a compressor making it possible to circulate the heat transfer fluid in the

  fluid connections between the outdoor and indoor units of the device.

  The indoor unit 3 comprises ventilation means and a heat exchanger playing the reverse role of the exchanger of the outdoor unit 2, that is to say evaporator in air conditioning mode of the device and condenser

in heating mode.

  The reversible air conditioning device also comprises means 5 for taking in air from inside the building located upstream of the indoor unit 3 and connected thereto by a return air duct 6, as well as means for blowing - for example at least one air fan heat treated by the indoor unit 3, located inside said unit downstream of the heat exchanger. Typically, the rework grid

  air 5 is located in the room of the building which acts as an entrance hall.

  Finally, the device comprises at least one automatic temperature control member inside the building capable of controlling the operation of the outdoor 2, indoor 3 units, as well as

  various valves regulating the air flows circulating in the building.

  More precisely, by automatic control member is meant an electronic management system 9 coupled to a control keyboard allowing a user to vary and / or program the fresh air flow rate, the air flow rate and the air temperature. heat treated, as well as the temperature of the fresh air if a treatment

  thermal is expected (see description below). The electronic system 9

  is connected to the outdoor 2 and indoor 3 units, to the fresh air supply means (fresh air motor-fan for a single-flow installation or VMC pump for double-flow operation) as well as to the various valves (by example the flow rate and motorized register modules) described below. Finally, the electronic system 9 is connected to at least one thermostat located inside the building, preferably to thermostats located in each room or group of rooms for which it is desired to independently manage the supply of air in flow and in temperature. . The electronic management system also makes it possible, when necessary, to reverse the operation of the air conditioning device between the heating or cooling positions. The connections between each member of the device and the electronic system, are typically electrical connections, but other types of connections could be envisaged

  like radio links (wireless).

  In addition, means for modulating the quantity of fresh air are provided, these means include a programmer allowing the programming of a set value corresponding to a minimum regulatory ventilation flow rate, and / or a humidity rate sensor. of the room, and / or a CO2 rate sensor, and / or a detector of the presence of people in the room or group of rooms, said modulation means being connected to the automatic control member of the interior temperature of the room. building, especially to the management system

electronic 9.

  The air conditioning system is designed to be connected to a source of fresh air. The fresh air is supplied from outside where it is extracted through a grid 7, then through ducts to the unit

interior 3.

  According to a first embodiment of the invention, as illustrated in FIG. 1, the extraction of stale air from the building is done by a group of single-flow extractor type: the fresh air is supplied from the outside to the indoor unit 3 of the reversible air conditioning device, thanks to a motor-fan 10 and a network of clean pipes, that is to say independently of the stale air which is extracted from the technical parts by the VMC system (Ventilation Controlled Mechanics) 11 traditional. According to a second - preferred - embodiment of the invention, as illustrated in FIG. 2, the ventilation is carried out in double flow with heat exchange: the supply of fresh air is made from the grid 7 overlooking the outside the building, through a network of fresh air ducts 12 connected to the double-flow CMV unit 13, then directed towards the indoor unit 3 of the air conditioning device. The double flow CMV unit 13 thus manages both the supply of fresh air and the extraction of stale air from so-called "technical" parts, that is to say most often the toilets, the bathroom and / or kitchen through stale air ducts 14. As explained in the introduction, double-flow ventilation allows you to ventilate a room

whatever the pressure.

  The air heat treated by the indoor unit 3 of the air conditioning device, and blown downstream of said indoor unit 3 by the blowing means 19, is then routed to each of the rooms.

  of the building, or to groups of rooms in this building.

  According to the invention, the distribution of air selectively in the direction of each room or group of rooms in the building is carried out by an air distribution block 1 located downstream of the indoor unit 3. The distribution block 1 according to the invention, as illustrated in FIG. 3, comprises at least one air distribution module 15 allowing the distribution in a room or a group of rooms of the building corresponding to said module: (a) of air heat treated by the indoor unit 3, the quantity and temperature of which are determined and adjustable by means of a thermostat located in said room or group of rooms, and simultaneously, (b) of fresh air taken from outside the building, in a determined quantity and adjustable independently of the heat-treated air thanks to the means for modulating the quantity of fresh air, these means comprising a programmer with a set value corresponding to a minimum regulated ventilation flow ntaire, and / or a room humidity sensor, and / or a CO2 rate sensor, and / or a detector of the presence of people in the room or group of rooms, said modulation means being connected to the supervisory body

  automatic temperature inside the building.

  According to a preferred embodiment of the invention, the selective distribution to each room or group of rooms connected to an air distribution module 15 and equipped with a thermostat, both of heat treated air, but also simultaneously and independently of fresh air, is made possible because each module 15 of the air distribution unit 1 comprises a chamber 16 with: (a) an inlet of heat treated air 20 coming from the internal unit 3 of the air conditioning, at a temperature controlled by the thermostat and the indoor 3 and outdoor 2 units, and at a flow rate controlled by the more or less large opening of a valve 21 controlled by the thermostat, and (b) a supply of fresh air in coming from outside the building, at a rate controlled by the more or less large opening of a valve 18 controlled by the programmer, and / or the humidity and / or CO2 rate sensors and / or the presence, and (c) an air outlet 22 towards the room or group

  of parts corresponding to said module 15.

  Preferably and as illustrated in FIG. 3, the block 1 comprises a fresh air inlet 17 common to all the modules. The distribution of fresh air from the common arrival of block 1 to each chamber 16 of a module 15 is effected by means of a valve 18 specific to each module 15 and making it possible to vary the flow of fresh air

brought to said module.

  The air outlet 22 of each module 15 of the air distribution unit 1 is connected to a room or a group of rooms by a thermally insulated duct (or respectively a group of thermally insulated ducts),

shown in Figures 1 and 2.

  Thus, at any time, said part or said group of parts is supplied with fresh air and / or heat treated air. In fact, in the corresponding air distribution module 15, the air distribution management system can control, under control of the thermostat corresponding to the room or group of rooms: - the supply of a room or a group of parts corresponding to said module 15, in fresh air only; in this case, the register - or supply valve - in fresh air 18 is open, at least partially, and the register of heat treated air 21 is closed, or - the supply of a room or a group of rooms corresponding to said module 15, in heat treated air only; in this case, the fresh air register 18 of said module 15 is closed and the heat treated air register 21 is at least partially open, or alternatively - the simultaneous supply of a room or a group of rooms corresponding to said module 15, in fresh air and heat treated air; by opening at least partially the two registers of fresh air 18 and heat treated air 21.

  It will be clearly understood from the above description that the

  air distribution management system 9 can manage independently

  The opening of the fresh air 18 or heat treated air registers 21.

  In a preferred embodiment of the invention, the registers or valves for heat treated air inlet 21 are butterfly valves, as illustrated in FIGS. 3 and 4. Each butterfly valve 21 is motorized, and its degree of opening (Figures 3 and 4 show the partially open butterfly valve flap) is controlled by the air distribution management system 9, depending on the temperature programmed by the thermostat located in the room or the corresponding group of rooms audit module 15. More precisely, each thermostat located in a room or group of rooms can communicate to the thermostats of other rooms as well as to the electronic management system, the temperatures it measures and the deviations from the setpoint programmed by the user on the control panel. This allows the electronic management system 9 to adjust the speed of the thermodynamic machine of the indoor unit, or at least if it is not at variable speed, to control the opening of the air valves. thermally depending on the

  request for each room or group of rooms equipped with a thermostat.

  In the case where the thermodynamic group of the air conditioning system is not at variable speed, the electronic management system, in the case where the demand for heat treated air for the whole building only requires a low flow rate below the low limits flow allowing the operation of the thermodynamic machine, manages the opening of the heat treated air valves for the parts most in demand in order to ensure the minimum flow necessary for the operation of the machine. Preferably, for a given thermal need, it is the heat treated air valves corresponding to the two parts most in demand of heat treated air, which will open. The fresh air inlet valves or registers 18 are preferably membrane valves, the principle of which is known to those skilled in the art, and which make it possible to distribute the fresh air in the various modules of the distribution block, at a constant flow level, whatever the air flow downstream of said valve 18, as illustrated in FIGS. 3 and 4. The degree of opening of such a membrane valve 18 is determined by the flow of upstream air, i.e. the air flow rate sent by the fresh air motor fan 10, or the VMC pump 13 if it is a

double flow system.

  In a preferred embodiment of the invention, the air distribution management system 9 is connected inside the building to a thermostat for each main room of the building, and no thermostat is master relative to the other. Thus, it is possible to modulate the desired temperature in each room thus equipped with a

  thermostat, independently of other rooms in the building.

  In a preferred embodiment of the invention, all the fresh air intake registers 18 are open at least partially permanently, so that a minimum quantity of fresh air is supplied to all the main rooms of the building. . This permanent partial opening must be preset, for example in the factory, so that the minimum ventilation complies with the regulations in force.

  concerning the ventilation and ventilation of residential accommodation.

  Thanks to the means of modulating the quantity of fresh air described above, the flow of fresh air can be modulated according to the humidity of the room, the rate of CO2 and / or the detection of presence in the room (performed for example using an optical sensor). In this case, each fresh air inlet of the block is no longer equipped with a diaphragm valve type equation valve, but with a modulating damper. Such a modulating register is a motorized valve whose degree of opening is controlled by the electronic management system 9.

  Advantageously, the fresh air is filtered upstream of the distribution block so as to eliminate pollens and other undesirable particles. Likewise, the fresh air can be heat treated upstream of the distribution block according to the invention, independently of the air treated by the indoor unit of the air conditioning device. This treatment can be done

  simply by a simple static heat exchanger.

  The air distribution and / or mixing unit according to the invention is therefore particularly advantageous since it allows a supply of fresh air downstream of the indoor unit of the air conditioning device, and upstream of the distribution network d air piece by piece. Thus, it makes it possible on the one hand to control the thermal requirements room by room, and on the other hand and above all, to permanently ensure the flow of fresh air room by room in accordance with the regulations, independently of the

  distribution of heat treated air by the indoor unit.

  The block according to the invention thus makes it possible to maintain the independence between the production of heat treated air (or energy production) and ventilation, but through ducts of the same distribution network, which allows gains in space, ease of installation, and low cost of production and installation. In addition, the maintenance of the air distribution members is facilitated. As it goes without saying, the invention is not limited to the sole embodiments of the method of the air distribution block described above, described above by way of examples, on the contrary it embraces all variants. Thus, in particular, the air distribution modules corresponding to certain parts of the building could be separated from the main air distribution block, for reasons of installation convenience for example. A fresh air supply should then be provided for each module or group of independent modules, as well as additional connections to the electronic management system.

opening of registers.

Claims (8)

  1 - A method of air conditioning or heating a building using a reversible air conditioning device, said device comprising: (i) an indoor unit (3) and an outdoor unit (2) connected by links (4 ) fluid and electrical, said indoor unit (3) comprising ventilation means and a heat exchanger, said outdoor unit (2) comprising ventilation means, a heat exchanger and a compressor, (ii) air return means (5, 6) from inside the building located upstream of the indoor unit (3) and connected to the latter, and means (19) for blowing heat-treated air through the indoor unit (3) located downstream of said unit and connected to it, (iii) at least one automatic temperature control member inside the building capable of controlling the operation of the outdoor unit (2), said device comprising a air distribution block (1) located downstream of the blowing means of the indoor unit (3) and which may be suitable for the selective distribution of air in certain rooms or groups of rooms in the building, characterized in that it consists in recycling at least part of the air taken back in the building, to heat treat the air thus recycled through the indoor unit of the air conditioning system, and to perform, downstream of the indoor unit and inside an air distribution block, the mixture: (a) air heat treated by the indoor unit, the quantity and temperature of which are determined and adjustable according to the set temperature programmed on the thermostat control panel, and simultaneously, (b) fresh air taken outside the building, in a determined and adjustable quantity, independently of the heat-treated air, according to a predetermined set value corresponding to a regulated minimum ventilation flow ntaire, and / or the humidity level of the room, and / or the CO2 rate, and / or the detection of the presence of people in the room or the group of rooms.   2 - Air distribution block (1) for a reversible air conditioning device for cooling and / or heating a building, said device comprising: (i) an indoor unit (3) and an outdoor unit (2 ) connected by fluidic and electrical connections (4), said indoor unit (3) comprising ventilation means and a heat exchanger, said outdoor unit (2) comprising ventilation means, a heat exchanger and a compressor, (ii) air intake means (5) inside the building located upstream of the indoor unit (3) and connected to the latter, and means (19) for blowing air treated thermally by the unit indoor (3) located downstream of said unit and connected to it, (iii) at least one automatic temperature control member inside the building capable of controlling the operation of the outdoor (2), indoor ( 3), as well as various reg valves uling the air flows circulating in the building, said air distribution unit (1) being connected to the reversible air conditioning device downstream of the blowing means (19) of the indoor unit (3) and being suitable for the selective air distribution in certain rooms of the building, characterized in that it comprises at least one air distribution module (1 5) allowing the distribution in a room or a group of rooms of the building corresponding to said module: (a ) of air treated thermally by the indoor unit, the quantity and temperature of which are determined and adjustable by means of a thermostat located in said room or group of rooms, and simultaneously, (b) fresh air taken outside of the building, in a determined and adjustable quantity independently of the heat-treated air by means of modulating the quantity of fresh air, these means comprising a programmer with a set value corresponding to a minimum regulatory ventilation flow, and / or a room humidity sensor, and / or a CO2 rate sensor, and / or a presence detector of people in the room or group of rooms, said modulation means being connected to the control member   automatic temperature inside the building.   3 - Air distribution block (1) according to claim 2, characterized in that each module (15) of the air distribution block ensuring the distribution of air in a room or a group of rooms corresponding to said module, comprises a chamber (16) with: (a) a supply of fresh air coming from outside the building, at a rate controlled by the more or less large opening of a valve (18) controlled by the programmer, and / or the humidity and / or CO2 rate sensors and / or the presence detector, and (b) an inlet of heat treated air (20) coming from the internal unit (3) of the air conditioning device , at a temperature controlled by the thermostat and at a flow rate controlled by the more or less large opening of a valve (21) controlled by the thermostat, and (c) an air outlet (22) towards the room or the group   of parts corresponding to said module (15).   4 - Air distribution block (1) according to any one of   claims 2 or 3, characterized in that the air conditioning device   is an "air / air" type device with direct expansion.   - Air distribution block (1) according to any one of   claims 2 to 4, characterized in that the fresh air from   the outside is filtered upstream of the distribution block.   6 - Air distribution block (1) according to any one of   claims 2 to 5, characterized in that the fresh air from   the outside is heat treated upstream of the distribution block.   7 - Air distribution block (1) according to any one of   Claims 2 to 6, characterized in that the fresh air valves (18) of the   distribution block (1) are self-regulating diaphragm valves.   8 - Air distribution block (1) according to any one of   Claims 2 to 7, characterized in that the air valves (21)   of the distribution block (1) are motorized butterfly valves. 9 - Reversible air conditioning device allowing the cooling and / or heating of a building, said device comprising: (i) an indoor unit (3) and an outdoor unit (2) connected by fluidic and electrical connections (4), said indoor unit (3) comprising ventilation means and a heat exchanger, said outdoor unit (2) comprising ventilation means, a heat exchanger and a compressor, (ii) air return means (7, 8) from inside the building located upstream of the indoor unit (3) and connected to it, and means for blowing heat-treated air by the indoor unit (3) located downstream of said unit and connected to it, (iii) at least one automatic temperature control member inside the building capable of controlling the operation of the outdoor (2), indoor (3) units, as well as the various valves regulating the flow rates d circulating air ns the building, characterized in that it comprises at least one block of   air distribution (1) according to one of claims 2 to 8, ladit   air distribution unit being connected to the reversible air conditioning device downstream of the blowing means (19) of the indoor unit (3) and which may be suitable for the selective distribution of air   in some rooms of the building.   10- Reversible air conditioning device according to claim 9, characterized in that the air distribution management system 9 is connected to a thermostat for each main room of the building, no thermostat being master with respect to the others, of so that it is possible to modulate the desired temperature in each room thus equipped with a