METHOD FOR CONTROLLING A VENTILATION, HEATING, AIR CONDITIONING AND / OR PURIFICATION SYSTEM

Abstract

The subject of the invention is a method for controlling a ventilation, heating, air conditioning and / or purification system for several zones of a room, the method comprising the following steps: - comparing a value of at least one parameter, called parameter value, relating to at least one constituent of air, with a given value, called comparison value, in each of the zones, and if a ratio, called pollution ratio, of said parameter value to said comparison value is greater than or equal to a value equal to 1, called unit value, in at least one of the zones, called polluted zone, - increasing a flow rate of fresh air by a first regulating device (47) of an opening (20) associated with said at least one polluted zone, and / or - increasing a flow rate of recycled air passing through the opening (20) associated with said at least one polluted zone. Abstract figure: Figure 2

Description

Title of the invention: METHOD FOR CONTROLLING A VENTILATION, HEATING, AIR CONDITIONING AND / OR PURIFICATION SYSTEM Technical field

[0001] The invention relates to a method for controlling a ventilation, heating, air conditioning and / or purification system for several zones of a room, in particular a room in the tertiary sector. Prior art

[0002] In a premises, in particular a premises in the tertiary sector, maintaining an optimal level of air quality is necessary in order to ensure a satisfactory level of comfort and health for the occupants of said premises. The level of air quality is often imposed by the regulations for premises in the tertiary sector, such as the standard departmental health regulations (RSDT). In particular, the RSDT set limit values ​​that certain indoor air pollutants in the premises must not exceed in order to guarantee the comfort and health of the occupants. Similarly, the World Health Organization (WHO) defines thresholds that indoor air pollutants must not exceed in order to preserve the health of the occupants. These thresholds can be set at different levels. Those defined by the WHO are more ambitious than the limit values ​​established in the RSDT.

[0003] In a known manner, maintaining air quality is achieved using a method comprising extracting stale air from the premises and introducing fresh air into the premises from outside the premises. A volume of fresh air introduced into the premises may be equal to a volume of stale air extracted from the premises, in particular when a dual-flow unit is used to introduce and extract the fresh air and the stale air. Alternatively, the volume of fresh air blown into the premises may be different from the volume of stale air extracted, in particular when a dual-flow unit is set as such.

[0004] The permanent introduction of fresh air into the room, however, causes significant energy losses, the process therefore being very energy-intensive.

[0005] The aim of the invention is to propose a method which overcomes this drawback. Summary

[0006] To this end, the invention relates to a method for controlling a ventilation, heating, air conditioning and / or purification system for several zones of a room, said system comprising at least one air flow regulation member and a device for thermal treatment of the air flow and / or a device for treatment and purification of the air flow circulating in said system, the system further comprising a ventilation device, the regulation member comprising a box comprising: - an inlet suitable for receiving a flow of air, called fresh air, from the ventilation device, called the first inlet, - an inlet adapted to receive an air flow, called recycled air, from the heat treatment device and / or the air flow purification treatment device, called the second inlet, - a plurality of openings each adapted to be connected to a respective duct of the system for bringing an air flow into a respective zone of the room, each opening being associated with at least one respective zone of the room, each opening comprising: - a first portion fluidly connected to the first inlet and forming a first air outlet, - a second portion fluidly connected to the second inlet and forming a second air outlet, the member further comprising, for each of the openings, a device for regulating a flow of fresh air, called the first regulating device, arranged in the first air outlet, the first regulating device being movable between a position of complete closure of the first air outlet and a position of complete opening of the first air outlet, the method being characterized in that it comprises the following steps: - comparison of a value of at least one parameter, called parameter value, relating to at least one constituent of an air, to a given value, called comparison value, in each of the zones, and if a ratio, called pollution ratio, of said parameter value to said comparison value is greater than or equal to a value equal to 1, called unit value, in at least one of the zones, called polluted zone, - increasing the flow of fresh air by said first device for regulating the outlet associated with said at least one polluted zone, and / or - increasing a flow of recycled air passing through the mouth associated with said at least one polluted zone.

[0007] Thus, thanks to the method according to the present invention, it is possible to improve the air quality in the polluted area of ​​the premises by increasing the flow of fresh air but also by increasing the flow of recycled air. Thus, the quantity of fresh air to be blown into the premises from outside decreases, which makes it possible to limit energy losses.

[0008] According to another characteristic of the invention, the step of increasing the flow rate of recycled air comprises an activation of a device for regulating the flow rate of recycled air, called a second regulating device, arranged in the second air outlet, the second regulating device being movable between a closed position full opening of the second air outlet and a full opening position of the second air outlet.

[0009] According to another characteristic of the invention, during the step of increasing the flow rate of recycled air passing through the mouth associated with said at least one polluted zone, the second device for regulating said mouth associated with said at least one polluted zone moves so as to increase a section of the second air outlet of said mouth associated with said at least one polluted zone, and / or the second devices for regulating the unpolluted zones move so as to reduce a section of the respective second air outlets.

[0010] According to another characteristic of the invention, during the step of increasing the flow rate of fresh air by said first device for regulating the outlet associated with said at least one polluted zone, the first device for regulating said at least one polluted zone moves so as to increase a section of the first air outlet of said outlet associated with said at least one polluted zone, and / or the first devices for regulating the unpolluted zones move so as to reduce a section of the respective first air outlets.

[0011] According to another characteristic of the invention, the step of increasing the flow of fresh air by said first device for regulating the outlet associated with said at least one polluted zone lasts until the pollution ratio is lower than the unit value in the polluted zone.

[0012] According to another characteristic of the invention, the increase in the flow rate of recycled air and / or the increase in the flow rate of fresh air is correlated with the value of the pollution ratio.

[0013] According to another characteristic of the invention, a flow of fresh air at the inlet of the regulating member, called the overall flow of fresh air, is kept constant.

[0014] According to another characteristic of the invention, a flow of fresh air entering the regulating member, called the overall flow of fresh air, is variable.

[0015] According to another characteristic of the invention, said at least one constituent of the air is chosen from: - one or more inorganic compound(s), and / or - one or more volatile organic compound(s), and / or - one or more semi-volatile organic compound(s), and / or - particles, and / or - microorganisms, and / or - water vapor in the polluted area at a given temperature.

[0016] According to another characteristic of the invention, when the pollution ratio is greater than the unit value for at least two constituents of the air, an order of priority is established between the at least two constituents of the air, a value of the increase in the flow of fresh air and / or the flow of recycled air depending on said order of priority.

[0017] According to another characteristic of the invention, the order of priority is established as a function of an absolute difference between the pollution ratio and the unit value for each constituent of the air, and / or of a nature of each constituent of the air, and / or of a detection of a human presence in the polluted zone.

[0018] According to another characteristic of the invention, the second air outlet of each mouthpiece provides a flow of recycled air to the respective zone(s) of the room during defined time periods. Brief description of the drawings

[0019] Other characteristics, details and advantages of the invention will become apparent from reading the description which follows. This description is purely illustrative and should be read in conjunction with the appended drawings in which: Fig.l

[0020] [fig.l] schematically illustrates an example of a ventilation, heating, air conditioning and / or purification system for a room controlled by a method according to the present invention; Fig. 2

[0021] [fig-2] illustrates a functional schematic cross-sectional view of an organ air flow regulation of the system of [fig.l]; Fig. 3

[0022] [fig.3] illustrates a perspective view of the air flow regulating member of the [fig.2], facing the front face of the organ; Fig. 4

[0023] [fig.4] illustrates a partial perspective view of the air flow regulating member of [fig.3]; Fig. 5

[0024] [fig.5] is an enlarged view of a detail of [fig.4]; Fig. 6

[0025] [fig.6] illustrates a perspective view of the air flow regulating member of the [fig.3], facing the rear face of the organ; Fig. 7

[0026] [fig-7] illustrates a perspective view of the air flow regulating member of the [fig.3], mounted on a thermal treatment and / or purification system. Description of the embodiments

[0027] A system 1 for ventilation, heating, air conditioning, and / or purification of a room 2 is shown in [fig.l].

[0028] Room 2 comprises several zones 3. Room 2 belongs to a building used by example in the tertiary economic sector. For example, zones 3 are offices. From now on, we will call "exterior" an exterior of the building. Alternatively, room 2 is, for example, individual or collective housing.

[0029] In [fig.l], the different zones 3 are separated by walls or form enclosed spaces, but the system 1 is also suitable for delimited zones without fixed partitions either inside the room 2 or inside a room of the room 2, for example for an open work space also called in English "open space".

[0030] Air in each of the zones 3 may be renewed for health and / or regulatory reasons. In addition, the air in each of the zones 3 may be brought to temperature, for comfort and / or regulatory reasons. Similarly, the air in each of the zones 3 may be purified for health and / or regulatory reasons.

[0031] The system 1 allows the zones 3 to each benefit from ventilation, heating and / or air conditioning. In particular, the system 1 may comprise a device 4 for thermally treating air flows and a ventilation device 5 which will be described later. The system 1 further comprises an air flow regulating member 6. The regulating member 6 will be described later with reference to FIGS. 2 to 7.

[0032] The heat treatment device 4 and the ventilation device 5 are fluidically connected to the air flow regulating member 6. In other words, a fluid, here air, can circulate between the ventilation device 5 and the heat treatment device 4 on the one hand, and the regulating member 6 on the other hand.

[0033] The system 1 may further comprise an air flow purification treatment device 11. By "purification" is meant, for example, that the air is totally or partially freed of impurities, such as microbes, viruses, bacteria, insects, microorganisms, particles, volatile or semi-volatile organic compounds, polluting gas molecules, inorganic compounds, etc.

[0034] The air purification treatment is for example a physicochemical treatment of the air. By physicochemical treatment is meant for example mechanical filtration, gravimetric filtration, adsorption, ionization and capture, electrostatic filtration, ozonization, plasma, photocatalysis, biofiltration, use of a disinfectant product or radiation, use of activated carbon, etc.

[0035] According to another example, the air purification treatment corresponds solely to an internal mixing (or dilution) of the air from several zones 3, without application of physicochemical treatment. The internal mixing makes it possible to mix the air from one or more more polluted zone(s) with the air from one or more less polluted zone(s). Thus, air is obtained comprising a concentration of pollutants intermediate between a concentration of pollutants in the more polluted zone(s) and a concentration of pollutants in the less polluted zone(s).

[0036] According to another example, the air purification treatment combines internal mixing and physicochemical treatment of the air.

[0037] The purification treatment device 11 is fluidically connected to the air flow regulating member 6. Thus, a fluid, here air, can circulate between the purification treatment 11 and the regulating member 6.

[0038] In some cases, the purification treatment device 11 is an independent device from the heat treatment device 4. In some cases, the purification treatment device 11 and the heat treatment device 4 form a single device.

[0039] In the example of [fig. 1], the purification treatment device 11 and the heat treatment device 4 are integrated in the same box 7. According to another example of system 1 not shown, the system 1 does not comprise a heat treatment device 4 and only the purification treatment device 11 is provided in the box 7. According to another example of system 1 not shown, the purification treatment device 11 is located in a first box upstream of a second box housing the heat treatment device 4. In the following, only the example of [fig. 1] will be described, in which the purification treatment device 11 and the heat treatment device 4 are integrated in the same box 7.

[0040] As particularly shown in [fig.7], the box 7 advantageously has the shape of a rectangular parallelepiped.

[0041] Advantageously, one of the faces of the box 7 is open so as to constitute a suction inlet 8. The suction inlet 8 is equipped with a suction means, capable of sucking in an air flow from the room 2, called a recycled air flow. For example, the suction means 8 comprises fans for sucking in the recycled air flow, as shown in [fig.l]. The suction inlet 8 is arranged inside the room 2, so that the recycled air flow originates from one or more zones 3 of the room 2. In other words, the recycled air flow is made up of one or more air flows coming from one or more zones 3. In certain cases, the recycled air flow is made up solely of air flows coming from one or more zones 3 called “living rooms”. By “living room” is meant any room not equipped with a water inlet. In such cases, the suction means 8 is only arranged in the living rooms.

[0042] The box 7 preferably comprises at least one heat exchanger (not shown) belonging to the heat treatment device 4. The heat exchanger may for example be an evaporator or a condenser. The heat exchanger is capable of modifying the temperature of the air flow sucked in by the suction mouth 8, so as to control a temperature of the recycled air flow.

[0043] Advantageously, a thermal control system (not shown) is connected to the air heat treatment device 4. The thermal control system comprises at least one temperature sensor 10 installed in each zone 3. The at least one temperature sensor 10 makes it possible to measure the temperature of the air in each zone 3. The thermal control system further comprises an electronic control box (not shown) for the heat treatment device 4, and an electronic connection electronically connecting the control box and the temperature sensors 10 of each zone 3. This connection may be wired or not depending on the exemplary embodiments. Thus, from the measurements of the at least one temperature sensor 10 of each zone 3, the heat exchanger in the box 7 can adjust the temperature of the recycled air flow as a function of a set temperature of the air in each zone 3.By "set temperature" is meant a desirable air temperature in each zone 3 that ensures comfort for at least one occupant of zone 3. In some cases, the set temperature may be set manually by the occupant of each zone 3. In some cases, the set temperature may be set automatically, for example based on an outside temperature or a time range. As will be detailed later, the system 1 is designed so that the ambient air temperature is adjustable for each of the zones 3, independently of the other zones 3.

[0044] The purification treatment device 11 comprises for example at least one filter (not shown). The at least one filter is for example installed in the box 7 near the suction mouth 8. The at least one filter makes it possible to filter the recycled air flow so as to rid the recycled air flow of impurities. In certain cases, the purification treatment device 11 may comprise a space for mixing the air flows from different zones 3 and forming the recycled air flow. In certain cases, the purification treatment device 11 combines the filtration and the mixing of the air flows forming the recycled air flow.

[0045] As will be explained later, the purification treatment device 11 can advantageously be connected to an air quality sensor system. The air quality sensor system comprises at least one sensor 13. In certain cases, at least one sensor 13 is installed in each zone 3 of the room 2. Such cases are encountered in particular when the zones 3 are completely separated from each other by walls or constitute enclosed spaces. In certain cases, the at least one sensor 13 is shared between several zones 3. Such cases are encountered in particular when the zones 3 are not separated from each other by walls, when the walls do not completely separate the zones 3 or when the zones 3 do not constitute enclosed spaces. In certain cases, certain zones 3 are devoid of sensors 13.

[0046] The at least one sensor 13 is configured to measure a quantity of at least one constituent of the air in the respective zone 3 of room 2. The at least one constituent of the air may be: - one or more inorganic compound(s), and / or - one or more volatile organic compound(s), and / or - one or more semi-volatile organic compound(s), and / or - particles, and / or - microorganisms, and / or - water vapor in the polluted area at a given temperature.

[0047] The inorganic compound(s) are for example carbon dioxide (CO2), carbon monoxide (CO), ozone (O3), nitric oxide (NO), nitrogen dioxide (NO2) and / or radon, among others.

[0048] The volatile organic compound(s) are for example alcohols, aldehydes, ketones, hydrocarbons and / or terpenes, among others. In particular, the volatile organic compound(s) are for example benzene, formaldehyde, naphthalene, trichloroethylene, tetrachloroethylene, hydrocyanic acid, acetaldehyde, acrolein, ethylbenzene and / or toluene, among others.

[0049] The semi-volatile organic compound(s) are for example phthalates, polycyclic aromatic hydrocarbons, musks and / or pesticides, among others.

[0050] By “microorganism” we mean a living organism invisible to the naked eye, such as viruses or bacteria for example.

[0051] By “particle” we mean any solid or liquid compound suspended in the air of each of the zones 3.

[0052] The amount of water vapor in the polluted zone at a given temperature determines a relative humidity in the polluted zone. In particular, the relative humidity is defined as a ratio between a partial pressure of the water vapor contained in the air of each zone 3 at the given temperature on a saturated vapor pressure in said zone 3 at the given temperature. The relative humidity in the zones 3 is preferably in a range of values ​​between 30% and 70%, more preferably between 40% and 60%. Above the upper values ​​of said ranges of values, there is for example a risk of degradation of the room 2, in particular by proliferation of bacteria, or condensation and infiltration of water in the walls. Below the lower values ​​of said ranges of values, there is for example a risk of loss of comfort, or even a health risk, for the occupants of the room 2.For example, occupants may experience drying of the mucous membranes due to dry conditions in room 2. Thus, when the relative humidity in one of the zones 3 is outside the said value ranges, zone 3 is considered a polluted zone.

[0053] In certain cases, the at least one sensor 13 is a presence sensor making it possible to determine a human presence in the respective zone 3.

[0054] Advantageously, the air quality sensor system further comprises an electronic control box (not shown) and an electronic connection electronically connecting the control box and the sensors 13 of each zone 3. Advantageously, the control box is provided with a storage medium (not shown), such as a memory. The control box may also be provided with a processor (not shown). The electronic connection may be wired or not depending on the exemplary embodiments.

[0055] In some cases, when the heat treatment device 4 is in operation, the purification treatment device 11 cannot operate. In some cases, when the purification treatment device 11 is in operation, the heat treatment device 4 cannot operate. In some cases, the heat treatment device 4 and the purification treatment device 11 may operate concomitantly. In some cases, the operation of the heat treatment device 4 is prioritized. Thus, when the heat treatment device 4 is activated, the purification treatment device 11 may be automatically stopped. In some cases, the operation of the purification treatment device 11 is prioritized. Thus, when the purification treatment device 11 is activated, the heat treatment device 4 may be automatically stopped.

[0056] A face of the box 7 parallel to the suction mouth 8 is also open so as to constitute an outlet 9 through which the recycled air flow flows. The outlet 9 is fluidically connected to the air flow regulating member 6.

[0057] The fluid connection between the outlet 9 and the air flow regulating member 6 will be described in more detail later.

[0058] The ventilation device 5 comprises a ventilation network capable of sucking in stale air flows 12 from the zones 3 of the room 2 to extract them from the room 2 to the outside.

[0059] For this, the ventilation network comprises a plurality of return vents 14 capable of sucking in the stale air flows 12. Each return vent 14 is arranged in one of the zones 3 of the room 2. Each return vent 14 is fluidically connected to the ventilation device 5 via a network of ducts 15, so as to be able to extract the stale air flows.

[0060] In certain cases, the extraction of the stale air flows 12 is carried out from zones 3 called “wet rooms”. Such cases are encountered for example when the room 2 is an individual or collective type dwelling. The term “wet room” means any room equipped with at least one water inlet. Wet rooms can be for example a kitchen, a bathroom, a shower room, toilets, etc. In such In this case, the return vents 14 can only be placed in wet rooms.

[0061] The ventilation device 5 is furthermore capable of sucking in a flow of fresh air from the outside to transmit it to the interior of the room 2 via the regulating member 6.

[0062] For this, the ventilation device 5 comprises a suction inlet equipped with a suction system 17, capable of sucking in a first flow of fresh air 18. The suction system 17 may comprise a fan and / or an air flow rate modulator in order to suck in the first flow of fresh air 18. This first flow of fresh air 18 comes from outside the building and is intended to be blown into the room 2. Advantageously, the ventilation device 5 may comprise at least one filter (not shown). The filter of the ventilation device 5 is for example arranged in the suction inlet. The filter is for example a gravimetric filter. Thus, the first flow of fresh air 18 can be further filtered by the ventilation device 5 so as to ensure that the first flow of fresh air 18 carries few impurities.

[0063] A volume of fresh air in the first fresh air flow 18 may be fixed, in which case a fresh air flow rate is called a “fixed flow rate”. Alternatively, the volume of fresh air in the first fresh air flow 18 may, on the contrary, be variable, in which case the fresh air flow rate is called a “variable flow rate”.

[0064] The ventilation device 5 may comprise any type of machine capable of performing this function of sucking in fresh air from the outside and discharging stale air to the outside. For example, so-called “single-flow” machines may be suitable. In another example, so-called “double-flow” machines may also be suitable.

[0065] The ventilation device 5 also comprises a fresh air outlet 19 fluidly connected to the air flow regulating member 6 so as to convey all or part of the first fresh air flow 18 to the air flow regulating member 6.

[0066] Figures 2 to 7 represent the air flow regulating member 6. For reasons of simplicity of illustration, and unlike Figures 3 to 7, [fig.2] does not represent a view of the member 6 but a purely functional diagram of the latter.

[0067] In the example of the ventilation, heating, air conditioning, and / or purification system for a room shown in [fig.l], the air flow regulating member 6 is installed in a false ceiling. Also, reference will be made to the vertical and horizontal directions subsequently to describe the relative locations of the elements making up the air flow regulating member 6 with reference to figures 2 to 7. Those skilled in the art will understand that these directions are relative to each other, and refer to the directions of the space in a position of use of the air flow regulating member 6 in a false ceiling. Those skilled in the art will know how to adapt the description in the case where the air flow regulating member 6 is used in another position of use, for example perpendicular to the use in a false ceiling, for example in a position of use in which the member 6 is fixed to the wall.

[0068] As visible in Figures 2 to 7, the air flow regulating member 6 comprises a box 24 advantageously having the general shape of a rectangular parallelepiped.

[0069] The box 24 thus has six parallel faces two by two: - an upper face 25 forming a horizontal ceiling of the box and a lower face 26 forming a horizontal floor of the box, - two small vertical side faces 27 and 28, and - two large vertical faces forming a front face 29 of the box and a rear face 30 of the box 24.

[0070] As will be detailed later, the front face 29 comprises a plurality of outlets 42 for recycled air flow, a plurality of outlets 43 for fresh air flow and a plurality of openings 20.

[0071] The rear face 30 of the box 24 is covered with a rectangular plate 31 hollowed out in its center with a rectangle of smaller dimension than the rectangular plate 31 hollowed out in its center. The recess is for example rectangular in shape, as visible in [fig.6]. The hollowed-out rectangular plate 31 forms by its recess an inlet 32 ​​for the flow of air recycled from the heat treatment device 4 and / or the purification treatment device 11. This inlet 32 ​​thus has a horizontal extent making it possible to distribute the flow of recycled air over the entire length of the box 24.

[0072] Preferably, as shown in Figures 2 to 7, a device for distributing the recycled air flow is provided opposite the inlet 32. The distribution device comprises at least two deflectors 33 in order to deflect the recycled air flow from the center of the box 24 towards the peripheral lateral parts. Thanks to these characteristics, the air flow regulating member 6 makes it possible to distribute a recycled air flow in a substantially homogeneous manner over the plurality of recycled air flow outlets 42. In certain cases, the recycled air flow to be distributed over the plurality of outlets 42 is constant. In other cases, the recycled air flow to be distributed over the plurality of outlets 42 is variable.

[0073] The fluid connection between the outlet 9 of the box 7 and the air flow regulating member 6 is achieved by fixing the rear face 30 of the box 24 to the outlet 9. Thus, the regulating member 6 is fluidically connected to the heat treatment device 4 and / or to the air flow purification treatment device 11.

[0074] As shown in Figures 2, 4 and 5, the box 24 also has a partition 34 thus separating it into two compartments which are watertight between them: - a compartment 35 for supplying recycled air flow, and - a compartment 36 for supplying fresh air flow.

[0075] The partition 34 has a general U shape, that is to say composed of a rectangular horizontal plate of which two opposite edges 37 and 38 are folded so as to form two plates inclined symmetrically with respect to a vertical plane. The two inclined plates are integral with the ceiling of the box 24. The hollowed-out rectangular vertical plate closes the external parts of the U and leaves open by its hollow only the interior of the U.

[0076] The interior of the U thus forms the compartment 35 for supplying recycled air flow while the exterior of the U forms the compartment 36 for supplying fresh air flow, as described below in more detail.

[0077] The lateral face 28 comprises a duct 39 forming a fresh air flow inlet. The fresh air flow inlet 39 can be fluidically connected to the fresh air outlet 19 of the ventilation device 5 by a network 50. The duct 39 allows the entry into the regulating member 6 of a fresh air flow, called the overall fresh air flow. The network 50 can comprise one or more control members (not shown) for the fresh air flow entering the regulating member 6. In certain cases, the overall fresh air flow is kept constant. In certain cases, the overall fresh air flow is variable. In certain cases, the overall fresh air flow can be variable, then constant, or vice versa.

[0078] The inlet 39 is arranged on a plate removably fixed to the box by means of screws 400. Thus, the removable plate can be alternately arranged on one or the other of the small lateral faces 27, 28, while the other small lateral face 28, 27 is equipped with another removable plate not having a conduit. Thus, the box 24 can be hermetically closed by the removable plate.

[0079] Thanks to these characteristics, an operator can choose the simplest configuration depending on the environment, in order to connect the regulating member 6 to the ventilation device 5 by the network 50 via the conduit 39.

[0080] Furthermore, one of the inclined plates 37, 38 of the partition 34 being arranged opposite the duct 39 makes it possible, in operation, to deflect the fresh air into the fresh air flow supply compartment 36.

[0081] The plurality of mouthpieces 20 will now be described. Each of the mouthpieces 20 has, for example, a circular shape.

[0082] As shown in Figures 2 to 7, the rectangular horizontal plate of the partition 34 delimits each of the mouths 20 into two portions, one upper 40 and the other lower 4L. A section of the upper portion 40 represents for example approximately ¾ of the total section of the mouth 20. A section of the lower portion 41 represents for example approximately of the total section of the mouth 20.

[0083] The upper portion 40 forms the outlet 42 for recycled air flow of each mouthpiece 20. The outlet 42 is fluidically connected, via the interior of the recycled air flow supply compartment 35, to the recycled air flow inlet 32.

[0084] The lower portion 41 forms the fresh air flow outlet 43 of each opening. In particular, the outlet 43 allows the passage through the opening 20 of a second fresh air flow. The second fresh air flow is less than or substantially equal to the first fresh air flow. In particular, the second fresh air flow can be substantially equal to the first fresh air flow only when a single outlet 43 of the member 6 allows the fresh air to exit to the room 2, the other outlets 43 being closed. The outlet 43 is fluidically connected, via the interior of the fresh air flow supply compartment 36, to the conduit 39 forming the fresh air flow inlet.

[0085] Thus, each opening 20 has both an outlet 42 for recycled air flow and an outlet 43 for fresh air. A mixture 23 of air flow comprising fresh air and recycled air thus passes through each opening 20.

[0086] Each of the openings 20 is associated with at least one respective zone 3 of the room 2. As visible in [fig.l], each opening 20 is connected to a duct 21. In certain cases, the duct 21 makes it possible to fluidly connect the air flow regulating member 6 to one of the zones 3 via a blowing outlet 22. In certain cases, the duct 21 makes it possible to fluidly connect the air flow regulating member 6 to several zones 3 via the blowing outlet 22. Thus, the air flow regulating member 6 is capable of delivering the mixture 23 of the fresh air and recycled air flows into each of the zones 3.

[0087] The distribution of the mixture 23 of the air flows, in particular the flow of recycled air and the flow of fresh air, can be controlled zone 3 by zone 3, as will be explained below.

[0088] As can be seen from Figures 2 to 7, the air flow regulating member 6 comprises, for each opening 20, a device for regulating the flow of fresh air. In certain cases, as shown in Figures 2 to 7, the regulating member 6 comprises, for each opening 20, a device for regulating the flow of recycled air.

[0089] In the example of regulation member 6 of figures 2 to 7, the devices for regulating the flow of fresh air and recycled air flow are flaps. In particular, the outlet 42 of recycled air flow is equipped with a flap 44 pivotally mounted about a substantially vertical axis 45 in the upper portion 40. The vertical axis 45 is substantially arranged in the center of the upper portion 40, so as to subdivide the upper portion 40 into two substantially symmetrical parts. Thus, two substantially equivalent passage sections of the recycled air flow are formed.

[0090] The flap 44 is pivotally mounted between two extreme positions: a position of complete closure of the recycled air flow outlet 42 and a position of complete opening of the recycled air flow outlet 42. Complete closure is permitted by the shape of the flap 44. In fact, the flap 44 has the same shape and same surface as the section of the upper portion 40.

[0091] As shown in Figures 4 and 5, the air flow regulating member 6 can comprise a first actuator 46 for each of the flaps 44 of the recycled air flow outlets 42. The actuator 46 is for example a stepper motor. Each actuator 46 makes it possible to control a rotation of each respective flap 44 in response to an electronic command.

[0092] The electronic control box of the heat treatment device 4 can be adapted to send the electronic rotation commands of each flap 44 independently of the other flaps 44. Similarly, the air quality sensor system can be adapted to send the electronic rotation commands of each flap 44 independently of the other flaps 44. Thus, the electronic control box and / or the sensors 13 make it possible to control the flow of recycled air to each zone 3. The control can therefore be carried out, for a given zone 3, as a function of the set temperature and the temperature of the zone 3 which is recorded by the corresponding temperature sensor 10. The control can also or alternatively be carried out, for a given zone 3, as a function of the quantity of the at least one constituent of the air in the respective zone 3 measured by the sensors 13.In some cases, the control is carried out based on the detection by the sensors 13 of human presence in the given zone 3.

[0093] The flap 44 thus has a function of regulating the air flow in the recycled air flow outlet 42.

[0094] The fresh air flow outlet 43 is equipped with a pivotally mounted flap 47. The flap 47 is pivotally mounted about a horizontal axis X. The horizontal axis coincides with the upper edge of the lower portion 4L. The flap 47 is pivotally mounted between two extreme positions: a position of complete closure of the fresh air flow outlet 43 and a position of complete opening of the fresh air flow outlet 43. The flap 47 has a shape and a surface area substantially similar to or larger than the lower portion 4L. Thus, in the completely closed position, the outlet 43 can be closed.

[0095] The air quality sensor system can be adapted to send the electronic rotation commands of each flap 47 independently of the other flaps 47. Thus, the sensors 13 make it possible to control the flow of fresh air to each zone 3. As will be explained later, the control is carried out, for a given zone 3, as a function of the quantity of the at least one constituent of the air in the zone 3 measured by the sensors 13. In certain cases, the control is carried out as a function of the detection by the sensors 13 of the human presence in the given zone 3.

[0096] The flap 47 thus has a function of regulating the flow of fresh air in the fresh air flow outlet 43.

[0097] It is noted that the flap 44 of the recycled air flow outlet and the flap 47 of the outlet of fresh air flow are therefore pivotally mounted around perpendicular intersecting axes. Thus, the member 6 can be produced in a compact manner, which is particularly advantageous, for example, for installation in a false ceiling.

[0098] Of course, the flaps 44, 47 can be replaced by other devices making it possible to open and close the recycled air outlets 42 and the fresh air outlets 43. For example, the flaps 44, 47 can be replaced by a ventilation iris installed in each opening 20.

[0099] It is noted that the member 6 makes it possible to regulate the distribution of fresh air flow by zone 3 by means of at least one second actuator (not shown) making it possible to adjust the position of the flaps 47. In certain cases, a second actuator is provided for each flap 47. In certain cases, a single second actuator is provided for all the flaps 47.

[0100] The regulating member 6 has the advantage of making it possible to share a duct network already provided for blowing recycled air by adding fresh air to it while making it possible to adjust the distribution of the quantity of fresh air per duct once the installation of the ducts is complete.

[0101] A method for controlling the ventilation, heating, air conditioning and / or purification system 1 described above will now be described. In the following, the expression “recycled air” refers to an air flow having been treated by the purification treatment device 11, whether by filtration and / or by internal mixing, as explained previously.

[0102] The method comprises a first step of comparing a value of at least one parameter, called parameter value, with a given value, called comparison value, of the at least one parameter in each of the zones 3. The parameter relates to the at least one constituent of the air of each zone 3. The parameter is for example a quantity in the air of at least one of the constituents of the air of each zone 3.

[0103] As presented previously, the at least one constituent of the air can be chosen from: - one or more inorganic compound(s), and / or - one or more volatile organic compound(s), and / or - one or more semi-volatile organic compound(s), and / or - particles, and / or - microorganisms, and / or - water vapor in the polluted area at a given temperature.

[0104] The parameter value is determined using at least one sensor 13 provided in each zone 3.

[0105] The comparison value corresponds to a predetermined value for each zone 3 of the at least one parameter associated with the parameter value. The comparison value may in particular correspond to a maximum value of the at least one parameter imposed in the regulations to ensure an optimal level of air quality in the respective zone 3. The comparison value may also correspond to a maximum value of the at least one parameter established by the occupant of each zone 3. In certain cases, the comparison value of the at least one parameter is the same for all zones 3. In certain cases, the comparison value of the at least one parameter differs between zones 3. Advantageously, the comparison value is stored on the storage medium of the electronic control box associated with the sensors 13.

[0106] The comparison between the parameter value and the comparison value can, for example, be carried out by the processor of the electronic control box associated with the sensors 13.

[0107] The comparison between the parameter value and the comparison value includes in particular the determination of a ratio, called the pollution ratio. The pollution ratio is defined as the ratio between the parameter value and the comparison value in each of the zones 3. In other words, the pollution ratio is the ratio of the parameter value to the comparison value. The optimal level of air quality is therefore ensured when the pollution ratio is less than a value equal to 1, called the unit value.

[0108] When in one of the zones 3, called polluted zone, the pollution ratio is greater than or equal to 1, the air quality cannot be considered satisfactory in said polluted zone.

[0109] In order to remedy this, the method according to the present disclosure comprises a step of increasing the flow rate of fresh air by the fresh air regulation device of the opening(s) 20 associated with the polluted zone. In particular, during the step of increasing the flow rate of fresh air, the flap 47 of each opening 20 associated with the polluted zone can move around the horizontal axis X towards the upper edge of the lower portion 4L. In other words, the flap 47 of each opening 20 associated with the polluted zone can move from the fully closed position to the fully open position. Said flap 47 of each opening 20 associated with the polluted zone may or may not reach the fully open position.

[0110] Thus, each flap 47 can move so as to increase the section of the fresh air outlet 43 of each mouth associated with the polluted zone. As a result, the passage of fresh air through the mouths 20 associated with the polluted zone is encouraged, so as to encourage the entry of fresh air into said polluted zone.

[0111] When several mouths 20 are associated with the polluted zone, the movement of the respective flaps 47 can be done independently of each other. Thus, the increase in the section of the outlet 43 may differ between the mouths 20 associated with the polluted area.

[0112] In some cases, the fresh air regulation device of each unpolluted zone 3 moves so as to reduce the section of each fresh air outlet 43 of the respective openings 20. In other words, the flap 47 of each opening 20 associated with the unpolluted zones 3 can move between the fully open position and the fully closed position, said flap 47 being able or not to reach said fully closed position. The reduction in the section of the outlets 43 of the openings 20 associated with the unpolluted zones is particularly advantageous when the overall fresh air flow rate is kept constant, but it can also take place when the overall fresh air flow rate is variable. Thanks to the reduction in the section of the outlets 43 of the openings 20 associated with the unpolluted zones 3, the fresh air flow rate introduced into the polluted zone increases, even if the overall fresh air flow rate is constant.

[0113] The flaps 47 of the openings associated with the unpolluted zones can move independently of each other when several openings 20 are associated with the unpolluted zones. Thus, the reduction in section of the outlets 43 can differ between each opening 20 associated with the unpolluted zones. Of course, it is also possible that only certain flaps 47 of openings 20 associated with the unpolluted zones 3 move so as to reduce the section of the respective outlets 43. Thus, in certain cases, only the flaps 47 of openings 20 associated with the unpolluted zones 3 and placed between the duct 39 forming the fresh air flow inlet and the opening(s) 20 associated with the polluted zone move.

[0114] In order to improve the air quality in the polluted area, the method may further comprise a step of increasing the flow rate of recycled air passing through the outlet(s) 20 associated with the polluted area. The step of increasing the flow rate of recycled air comprises activating the device for regulating the flow rate of recycled air arranged in the recycled air outlet 42 of each outlet 20 associated with the polluted area. In particular, during the step of increasing the flow rate of recycled air, the flap 44 of each outlet 20 associated with the polluted area may move so as to increase the section of the recycled air outlet 42 of the outlet 20 associated with said at least one polluted area. In other words, the flap 44 of each outlet 20 associated with the polluted area may move from the fully closed position to the fully open position.Said flap 44 of each mouth 20 associated with the polluted zone may or may not reach the fully open position. Thus, the passage of recycled air through the mouths 20 associated with the polluted zone is encouraged, so as to encourage the entry of recycled air into said polluted zone.

[0115] When several mouths 20 are associated with the polluted zone, the movement of the respective flaps 44 can be done independently of each other. Thus, the increase in the section of the outlet 42 may differ between the mouths 20 associated with the polluted area.

[0116] In certain cases, the device for regulating the zones 3 of each unpolluted zone 3 moves so as to reduce the section of each outlet 42 of recycled air of the mouths 20 associated with said unpolluted zones 3. In other words, the flap 44 of each mouth 20 associated with the unpolluted zones 3 can move between the fully open position and the fully closed position, said flap 44 being able or not to reach said fully closed position. Thus, the flow of recycled air passing through each mouth 20 associated with each unpolluted zone decreases.

[0117] The flaps 44 of the mouths associated with the unpolluted zones can move independently of each other when several mouths 20 are associated with the unpolluted zones. Thus, the reduction in section of the outlets 42 can differ between each mouth 20 associated with the unpolluted zones. Of course, it is also possible that only certain flaps 44 of mouths 20 associated with the unpolluted zones 3 move so as to reduce the section of the respective outlets 42.

[0118] When the flow rate of recycled air to be distributed over the plurality of outlets 42 is variable, the step of increasing the flow rate of recycled air passing through the mouth(s) 20 associated with the polluted zone can be done without the movements of the flaps 44 explained above. In particular, an increase in the flow rate of recycled air to be distributed over the plurality of outlets 42 can make it possible to increase the flow rate of recycled air passing through the mouth(s) 20 associated with the polluted zone, without needing to reduce the flow rate of recycled air passing through the mouth(s) 20 associated with the unpolluted zones.

[0119] In some cases, the increase in the recycled air flow rate and / or the increase in the fresh air flow rate in the polluted zone(s) is correlated with the value of the pollution ratio. For example, the further the pollution ratio moves away from the unit value, the greater the increase in the fresh air flow rate and / or the recycled air flow rate in each polluted zone.

[0120] When the pollution ratio is greater than the unit value for at least two air constituents, an order of priority is established between the at least two air constituents. Thus, a value of the increase in the fresh air flow rate and / or the recycled air flow rate passing through the outlet(s) associated with the polluted zone depends on said order of priority. In certain cases, the order of priority is established according to an absolute difference between the pollution ratio and the unit value for each air constituent. Thus, the value of the increase in the fresh air flow rate and / or the recycled air flow rate passing through the outlet(s) associated with the polluted zone is determined according to the constituent whose pollution ratio is the furthest from the unit value. In certain cases, the order of priority depends on a nature of each air constituent. Thus, for example, since CO2 is a marker of human presence in zones 3, priority may be given to CO2 over other air constituents. Thus, if in the polluted zone the pollution ratio relative to CO2 and the pollution ratio relative to at least one other air constituent exceed the unit value, the value of the increase in the flow of fresh air and / or the flow of recycled air passing through the outlet(s) associated with the polluted zone will primarily aim to reduce the pollution ratio relative to CO2 below the unit value, even if the absolute difference between the pollution ratio of CO2 and the unit value is less than the absolute difference between the pollution ratio of the other air constituent and the unit value.

[0121] The order of priority can also be used when there are at least two polluted zones in the room 2. In this case, the movement of the flaps 44, 47 in the regulating member 6 can be done for example so as to promote the entry of fresh air and / or recycled air into the polluted zone having a pollution ratio greater than the unit value for the constituent established as a priority in the order of priority. Thus, for example, there can be a first polluted zone having the pollution ratio for CO2 greater than the unit value, and a second polluted zone whose pollution ratio exceeds the unit value for NO2. If CO2 is considered to have priority over NO2, the flaps 44 and / or the flaps 47 of the outlets 20 associated with the first polluted zone can further increase the section of the outlets 42 and / or the outlets 43 compared to the flaps 44 and / or the flaps 47 of the outlets 20 associated with the second polluted zone.If the order of priority is established according to an absolute difference between the pollution ratio and the unit value for each constituent of the air, the increase in the section of the outlets 42 and / or the outlets 43 will be greater in the mouths 20 associated with the polluted zone having a greater absolute difference between the pollution ratio of one of the constituents of the air and the unit value.

[0122] In certain cases, the step of increasing the flow rate of fresh air by the flap 47 of each outlet 20 associated with said at least one polluted zone lasts until the pollution ratio is less than the unit value in each polluted zone. In certain cases, the step of increasing the flow rate of recycled air by the flap 44 of each outlet 20 associated with said at least one polluted zone lasts until the pollution ratio is less than the unit value in each polluted zone.

[0123] It is noted that the method according to the present disclosure can be applied permanently in room 2. Thus, the method makes it possible to permanently monitor the constituents of the air in the zones 3 of the room 2 associated with at least one sensor 13, which makes it possible to adjust the flow rates of fresh air and recycled air arriving in each zone 3 when the pollution ratio for at least one constituent of the air in the zones 3 exceeds the value unitary in at least one of the zones 3.

[0124] In some cases, the regulating member 6 continuously provides a flow of fresh air and / or a flow of recycled air to each zone 3 through the outlets 43 and the outlets 42 respectively. Thus, the air quality in each zone 3 can be smoothed over time. In some cases, the outlet 42 of each mouth 20 provides the flow of recycled air to the respective zone(s) 3 of the room during defined time slots. In some cases, the outlet 43 of each mouth 20 provides the flow of fresh air to the respective zone(s) 3 of the room during defined time slots.

[0125] It is noted that preferably, the sum of the flow rates of fresh air and recycled air introduced into each zone 3 is equal to a flow rate of stale air extracted from the respective zone 3. Thus, the pressure in each zone 3 is constant.

[0126] By using recycled air flows to improve the air quality in zones 3, the method according to the present disclosure also makes it possible to limit the need to introduce fresh air into room 2 and thus reduce energy losses. Thus, for example, when several zones 3 are not polluted, the fresh air flow introduced into the polluted zones can be reduced and replaced by the recycled air flow consisting, in whole or in part, of air flows from the unpolluted zones 3.

[0127] Of course, the present disclosure is not limited to the example described above with regard to the figures. The present disclosure also encompasses all variants and combinations that may be envisaged by those skilled in the art within the framework of the protection sought.

[0128] Thus, for example, the increase in the flow of fresh air and / or the flow of recycled air introduced into each zone 3 can be done as a function of the detection by the sensor(s) 13 of a human presence in the zones 3.

[0129] Similarly, the comparison between the parameter value and the comparison value may in particular comprise the determination of an overshoot between the parameter value and the comparison value in each of the zones 3. In these cases, the zones 3 are considered polluted zones when the parameter value is greater than the comparison value. The increase in the flow rate of fresh air and / or the flow rate of recycled air introduced into the at least one polluted zone therefore takes place when in the at least one polluted zone the parameter value is greater than the comparison value.

[0130] Similarly, the method may comprise an inter-zone comparison of the parameter values. In this configuration, the parameter value for the same air constituent is compared between the different zones 3. When the parameter values ​​differ between zones, the steps of increasing the fresh air flow rate and / or increasing the recycled air flow rate described above aim to homogenize the parameter values ​​in all areas 3.

[0131] Finally, the method may also be adapted to determine parameter values ​​that deviate from a comparison range. The comparison range corresponds to a predetermined range of values ​​for each zone 3 comprising a lower limit and an upper limit of values ​​between which the parameter value must advantageously be included. The comparison range may in particular correspond to a range of values ​​of the at least one parameter imposed in the regulations to ensure an optimal level of air quality in the respective zone 3. The comparison range may also correspond to a maximum value of the at least one parameter established by the occupant of each zone 3.In these cases, when the parameter value is not included in the comparison range, the method can modify the flow rates of fresh air and recycled air introduced into each zone 3, until the parameter value is included in the comparison range in all zones 3. This configuration makes it possible, for example, to adjust the relative humidity in each zone 3, so that it is preferably included between 30% and 70%, more preferably between 40% and 60%.

Claims

Claims

1. Method for controlling a system (1) for ventilation, heating, air conditioning and / or purification of several zones (3) of a room (2), said system (1) comprising at least one air flow regulation member (6) and a thermal treatment device (4) for air flow and / or a purification treatment device (11) for air flow circulating in said system (1), the system further comprising a ventilation device (5), the regulation member (6) comprising a box (24) comprising: - an inlet (39) adapted to receive a flow of air, called fresh air, from the ventilation device (5), called the first inlet, - an inlet (32) adapted to receive an air flow, called recycled air, from the heat treatment device (4) and / or from the air flow purification treatment device (11), called second inlet, - a plurality of openings (20) adapted to each be connected to a respective duct (21) of the system (1) to bring an air flow into a respective zone (3) of the room (2), each opening (20) being associated with at least one respective zone (3) of the room (2), each opening (20) comprising: - a first portion (41) fluidly connected to the first inlet (39) and forming a first air outlet (43), - a second portion (40) fluidly connected to the second inlet (32) and forming a second air outlet (42), the member (6) further comprising, for each of the mouths (20), a device (47) for regulating a flow of fresh air, called the first regulating device, arranged in the first air outlet (43), the first regulating device (47) being movable between a position of complete closure of the first air outlet (43) and a position of complete opening of the first air outlet (43), the method being characterized in that it comprises the following steps: - comparison of a value of at least one parameter, called parameter value, relating to at least one constituent of an air, with a given value, called comparison value, in each of the zones (3), and if a ratio, called pollution ratio, of said parameter value to said comparison value is greater than or equal to a value equal to 1, called unit value,in at least one of the zones (3), called the polluted zone, - increase in the flow of fresh air by said first re- device, regulation (47) of the mouth (20) associated with said at least one polluted zone, and / or - increase in a flow of recycled air passing through the mouth (20) associated with said at least one polluted zone.

2. Method according to the preceding claim, in which the step of increasing the flow rate of recycled air comprises activating a device (44) for regulating the flow rate of recycled air, called the second regulating device, arranged in the second air outlet (42), the second regulating device (44) being movable between a position of complete closure of the second air outlet (42) and a position of complete opening of the second air outlet (42).

3. Method according to the preceding claim, wherein, during the step of increasing the flow rate of recycled air passing through the mouth (20) associated with said at least one polluted zone, the second regulating device (44) of said mouth associated with said at least one polluted zone moves so as to increase a section of the second air outlet (42) of said mouth (20) associated with said at least one polluted zone, and / or the second regulating devices (44) of the unpolluted zones move so as to reduce a section of the respective second air outlets (42).

4. Method according to one of the preceding claims, wherein, during the step of increasing the flow rate of fresh air by said first regulating device (47) of the mouth (20) associated with said at least one polluted zone, the first regulating device (47) of said at least one polluted zone moves so as to increase a section of the first air outlet (43) of said mouth (20) associated with said at least one polluted zone, and / or the first regulating devices (47) of the unpolluted zones move so as to reduce a section of the respective first air outlets (43).

5. Method according to one of the preceding claims, in which the step of increasing the flow of fresh air by said first regulating device (47) of the mouth (20) associated with said at least one polluted zone lasts until the pollution ratio is less than the unit value in the polluted zone.

6. Method according to one of the preceding claims, in which the increase in the flow rate of recycled air and / or the increase in the flow rate of fresh air is correlated with the value of the pollution ratio.

7. Method according to one of the preceding claims, in which a flow of fresh air at the inlet of the regulating member (6), called overall flow of fresh air, is kept constant.

8. Method according to one of claims 1 to 6, in which a flow of fresh air entering the regulating member (6), called the overall flow of fresh air, is variable.

9. Method according to one of the preceding claims, in which said at least one constituent of the air is chosen from: - one or more inorganic compound(s), and / or - one or more volatile organic compound(s), and / or - one or more semi-volatile organic compound(s), and / or - particles, and / or - microorganisms, and / or - water vapor in the polluted zone at a given temperature.

10. A method according to any one of the preceding claims, wherein when the pollution ratio is greater than the unit value for at least two air constituents, an order of priority is established between the at least two air constituents, a value of the increase in the flow of fresh air and / or the flow of recycled air depending on said order of priority.

11. Method according to the preceding claim, in which the order of priority is established according to an absolute difference between the pollution ratio and the unit value for each constituent of the air, and / or a nature of each constituent of the air, and / or a detection of a human presence in the polluted zone.

12. A method according to any preceding claim, wherein the second air outlet (42) of each mouthpiece (20) provides a flow of recycled air to the respective zone(s) (3) of the room during defined time periods.

Images