PILOTING PROCEDURE

Abstract

The subject of the invention is a method for controlling a ventilation, heating and / or cooling system of an air flow (F) of a zone (Z), such as a living room, at a given setpoint temperature (Tc), the system (1) comprising energy transformation equipment for supplying a heat transfer fluid (2) at a flow temperature (TD), at least one thermal emitter (3) provided with a variable speed air ventilation means and a hydraulic circuit (4) for connecting the energy transformation equipment to supply a heat transfer fluid (2) to said at least one thermal emitter (3), the system being programmed to deliver, according to a time sequence of at least a first period and a second period, a setpoint temperature and a speed level of said ventilation means being associated with each period,the method (100) comprising an anticipation step (103) during the first period and comprising a step (108) of changing the speed of said ventilation means to reach the set temperature of the second period during the first period. Abstract figure: Figure 3,

Description

Title of the invention: PILOTING METHOD

[0001] The present disclosure relates to the field of ventilation, heating and / or cooling of residential or tertiary buildings. Prior art

[0002] Different types of architectures for ventilation, heating and / or cooling systems of the air in an area of ​​a residential or tertiary building are known, which hydraulically connect equipment for transforming collected energy to provide a cold or hot heat transfer fluid, such as for example a heat pump, a chilled water unit or a geothermal device, to energy use equipment, or thermal emitter, such as a floor, a ceiling, a radiator or even a fan coil.

[0003] Fan coils in particular are equipped with ventilation means whose noise level may prove uncomfortable for the occupants of the area to be ventilated, heated and / or cooled, particularly during times of change in the set temperature, which may involve a change in the speed of the ventilation means.

[0004] So, to limit the noise generated by the ventilation means, we sometimes find on these fan coils a night or low speed position, which prohibits the increase in speed of the ventilation means. However, the disadvantage of this type of setting is the reduction in the performance of the system, which cannot then reach the set temperature desired by the users.

[0005] The aim of the present invention is to at least partially remedy these drawbacks. Summary

[0006] The present disclosure improves the situation.

[0007] A method is proposed for controlling a ventilation, heating and / or cooling system for an air flow in an area, such as a living room, at a given setpoint temperature, the system comprising energy transformation equipment for supplying a heat transfer fluid at a starting temperature, at least one thermal emitter provided with a variable speed air ventilation means and a hydraulic circuit for connecting said energy transformation equipment to said at least one thermal emitter, the system being programmed to deliver, according to a time sequence of at least a first period and a second period, a setpoint temperature and a speed level of said ventilation means being associated with each period, the method comprising an anticipation step during the first period and comprising a change step speed of said ventilation means to reach the set temperature of the second period during the first period.

[0008] Thus, thanks to the present invention, it is possible to limit the noise generated by the system, in particular during increases in the set temperature in heating mode and decreases in the set temperature in cooling mode while ensuring satisfactory performance when the fan(s) are at low speed.

[0009] In other words, depending on the user's choices, the system automatically reduces its noise level while maintaining heating or cooling performance.

[0010] According to another aspect, the anticipation step begins in the first period from an anticipation time.

[0011] According to another aspect, the anticipation time is equal to the product of an anticipation value by an absolute value of the temperature difference between the set temperature of the second period and an air temperature measured in the zone.

[0012] According to another aspect, the anticipation value is fixed.

[0013] According to another aspect, the anticipation value is between 10 minutes / °C and 45 minutes / °C, for example 30 minutes / °C.

[0014] According to another aspect, the anticipation value is calculated by iteration and depends on a time difference between the moment when the set temperature of the second period is reached and the anticipation time of the previous iteration.

[0015] According to another aspect, the anticipation step comprises for each iteration a step of calculating the iterative anticipation value using the following formula:

[0016] Vanv = Vac^ / U

[0017] Where VaCu = (MU_ taUA)lTc2-

[0018] According to another aspect, the number of iterations is finite, preferably between 2 and 20, for example 2, 4 or 20.

[0019] According to another aspect, the method comprises a prior step of calculating the thermal power required to change the set temperature.

[0020] According to another aspect, if the power required is greater than the power that the system can provide taking into account the speed level of said ventilation means, the method comprises a step of modifying the starting temperature of the heat transfer liquid.

[0021] The invention also relates to a method for controlling a ventilation, heating and / or cooling system of an air flow (F) of a zone (Z), such as a living room, at a given set temperature (Te), this system comprising energy transformation equipment for supplying a heat transfer fluid at a starting temperature (TD), at least one thermal emitter provided with a variable speed air ventilation means and a hydraulic circuit for connecting the energy transformation equipment to said at least one thermal emitter, the method comprising a step of modifying the starting temperature of the heat transfer fluid (TD), when the given set temperature (Te) is not reached after a predetermined period of time or when, after calculation, it is determined that the power necessary to reach the given set temperature (Te) is greater than the power that the system can supply taking into account the speed level of said ventilation means, said speed of said ventilation means being kept unchanged.

[0022] The power that the system can provide is limited because the fan speed is limited in order to reduce noise. This speed is therefore strictly lower than the maximum speed that the fan can provide.

[0023] For purely illustrative purposes, the speed of said ventilation means is lower than the maximum speed of said ventilation means, preferably equal to the lowest speed of said ventilation means, or up to 25% of the maximum speed of said ventilation means, and even better up to 35% of the maximum speed of said ventilation means.

[0024] Preferably, according to this method, the system is programmed to deliver, according to a time sequence of at least a first period and a second period, a set temperature and a speed level of said ventilation means being associated with each period, the method comprising a step of anticipation during the first period and comprising a step of changing the speed of said ventilation means to reach the set temperature of the second period during the first period.

[0025] Thus, thanks to the present invention, it is possible to limit the noise generated by the system, in particular during increases in the set temperature in heating mode and decreases in the set temperature in cooling mode while ensuring satisfactory performance when the fan(s) are at low speed.

[0026] In other words, depending on the user's choices, the system automatically decreases its noise level while maintaining heating or cooling performance.

[0027] According to another aspect, the anticipation step begins in the first period from an anticipation time.

[0028] According to another aspect, the anticipation time is equal to the product of an anticipation value by an absolute value of the temperature difference between the set temperature of the second period and an air temperature measured in the zone.

[0029] According to another aspect, the anticipation value is fixed.

[0030] According to another aspect, the anticipation value is between 10 minutes / °C and 45 minutes / °C, for example 30 minutes / °C.

[0031] According to another aspect, the anticipation value is calculated by iteration and depends on a time difference between the moment when the set temperature of the second period is reached and the anticipation time of the previous iteration.

[0032] According to another aspect, the anticipation step comprises for each iteration a step of calculating the iterative anticipation value according to the formula below: [00331 Van v = (E" / '^ VaN„ + Vac^lV

[0034] Where Vacu=(Mu-tau l) / Tc2.

[0035] According to another aspect, the number of iterations is finite, preferably between 2 and 20, for example 2, 4 or 20.

[0036] According to another aspect, this method comprises a prior step of calculating the thermal power necessary for the change in set temperature.

[0037] The invention also relates to an air cooling system for ventilation, heating and / or cooling of an air flow of an area, such as a living room, to a given setpoint temperature, the system comprising energy transformation equipment for supplying a heat transfer fluid at a starting temperature, at least one thermal emitter provided with a variable speed air ventilation means and a hydraulic circuit for connecting the energy transformation equipment to supply a heat transfer fluid to said at least one thermal emitter, the system being programmed to deliver, according to a time sequence of at least a first period and a second period, a setpoint temperature and a speed level of said ventilation means being associated with each period, the system comprising a control unit configured to implement the control method as described above.

[0038] The invention also relates to a computer program comprising instructions for implementing the method as described above when this program is executed by a processor.

[0039] The invention also relates to a non-transitory recording medium readable by a computer on which is recorded a program for implementing the method as described above when this program is executed by a processor. Brief description of the drawings

[0040] Other characteristics, details and advantages will appear on reading the detailed description below, and on analyzing the attached drawings, in which: Fig. 1

[0041] [Fig-1] shows a schematic view of a ventilation, heating and / or ventilation according to the present invention. Fig. 2

[0042] [Fig.2] shows a schematic view in longitudinal section of a fan coil according to the present invention. Fig. 3

[0043] [Fig.3] shows a timing diagram of a method for controlling the system of [Fig.l] according to a first embodiment (with fixed anticipation value) and a second embodiment (with iterative anticipation value). Fig. 4

[0044] [Fig.4] shows an example of a daily schedule for the process of [Fig.3]. Fig. 5

[0045] [Fig.5] shows a timing diagram according to the prior art. Fig. 6

[0046] [Fig.6] shows a timing diagram of the implementation of the method of [Fig.3] according to the first embodiment. Fig. 7

[0047] [Fig.7] shows a timing diagram of the implementation of the method of [Fig.3] according to the second embodiment. Fig. 8

[0048] [Fig.8] shows a flowchart of the implementation of the method of [Fig.3] according to the first embodiment. Fig. 9

[0049] [Fig.9] shows a flowchart of the implementation of the method of [Fig.3] according to the second embodiment. Fig. 10

[0050] [Fig. 10] shows a flowchart relating to a step of the process of [Fig.3]. Description of the embodiments

[0051] The present disclosure involves ventilating, cooling and / or heating a zone Z, such as a room in a residential or tertiary building, by a cooling system, referenced 1 in the figures. The system 1 ensures the implementation of a method 100 for controlling the temperature in the zone Z.

[0052] As visible in [Fig.l], the system 1 comprises energy transformation equipment for supplying a heat transfer fluid 2. This equipment transformation of energy collected by a source, to provide a heat transfer fluid 2 is a heat pump, a chilled water unit or a geothermal source. This heat transfer fluid is here water. The water temperature at the outlet of the energy transformation equipment 2 is called the water outlet temperature, noted TD.

[0053] The system 1 also comprises one or more thermal emitters 3, such as a floor, a ceiling, a radiator, a hydraulic radiator or a fan coil, which will be detailed later. The system 1 also comprises a hydraulic circuit 4 for connecting the energy transformation equipment 2 to each thermal emitter 3.

[0054] The control method 100 is implemented by a control unit UC (also called a calculation module) which can be fully included in the thermal emitter 3, or fully in the energy transformation equipment for supplying a heat transfer liquid 2, or partially in both, or even in a separate module, or partially in the thermal emitter 3, the energy transformation equipment for supplying a heat transfer liquid 2 and the separate module.

[0055] Preferably, the or at least one of the thermal emitters 3 is a fan coil, as illustrated in [Fig.2].

[0056] As can be seen from this figure, the fan coil 3 comprises a casing 10 provided with an air inlet 11 and an air outlet 12. The emitter 3 also comprises at least one fan 13 for forcing air into the casing 2 by convection. The speed of the fan is variable.

[0057] The transmitter 3 also comprises a heat exchanger 14, for example of the hydraulic type, also called a cold battery. Advantageously, the transmitter 3 contains a filter 15 behind the air inlet 11.

[0058] The heat exchanger 14 is preferably reversible. To heat the zone Z, it is the water flowing in the exchanger 14 which heats the air circulating in the emitter 3. Thus, the air drawn into the casing 10 by the air inlet 11 is heated in the exchanger 14, and heats the zone Z when it leaves the emitter 3 by the outlet 12.

[0059] To cool zone Z, it is the air which transmits its calories to the water flowing in the exchanger 14. Thus, the air sucked into the casing 10 by the air inlet 11 is cooled in the exchanger 14, and cools zone Z when it leaves the emitter 3 by the outlet 12.

[0060] Advantageously, the transmitter 3 comprises a humidity sensor 16, preferably positioned near the inlet 11, in the air flow, at the bottom of the device. Alternatively, the humidity measurement is carried out by a remote station, in wired or wireless connection with the control unit UC. The transmitter is also equipped with a temperature probe 17 preferably placed on the inlet of the exchanger 14.

[0061] The transmitter 3 comprises a control module 18 (otherwise called a piloting module) connected wired or wirelessly to the humidity and temperature sensors, so that the transmitter 3 can cooperate with the energy transformation equipment 2 of the heat pump type, for example, making it possible to produce heat and cold.

[0062] As seen in [Fig.2], the transmitter 3 is equipped with a human-machine interface, 19, to allow a user to enter a target air temperature, in particular, called a setpoint temperature. The interface 19 is either embedded on the transmitter 3 or remote (remote control, mobile phone, called a smartphone in English, or even the interface of the energy transformation equipment 2).

[0063] According to the alternative of [Fig. 3], the control unit UC is partially included in each transmitter 3, in the control module 18 for example, and in the energy transformation equipment 2. The communication between each thermal transmitter 3 and the energy transformation equipment 2 can be wired, or, preferably, wireless, by radio frequency, via the Zigbee protocol, for example. For example, the part of the control unit UC included in the transmitter 3 is connected, wired or wirelessly, to the humidity and temperature sensors and communicates with the part of the control unit UC included in the energy transformation equipment 2. The energy transformation equipment 2 then defines the flow temperature according to the flow temperatures calculated by each of the transmitters.

[0064] According to another alternative, not illustrated, the control unit is fully integrated into the generator 2. The communication between each thermal emitter 3 and the energy transformation equipment 2 can be wired, or, preferably, wireless, by radio frequency, via the Zigbee protocol, for example. The energy transformation equipment 2 centralizes the humidity and temperature measurements and the control unit calculates the dew point, then the water outlet temperature.

[0065] It is noted that the interface 19 can be integrated into the control unit UC.

[0066] The interface 19 allows the user to define periods over a given time, for example day or week, corresponding to moments of life, such as, for example, absence or presence in zone Z, night or day. Each period is associated with a set temperature and a noise level. For example, the fan of the fan coil 13 can have two speed levels, each corresponding to a respective sound level (low, medium) or three speed levels (low, medium, high), each corresponding to a respective sound level (low, medium, high).

[0067] By default, we define at least day / night periods and presence / absence periods and for each of these periods the user indicates a set temperature.

[0068] Reference is now made to [Fig.3].

[0069] As visible in this figure, the method 100 applies to a time sequence of at least two periods, that is to say the succession over time of at least a first period PI and a second period P2. A setpoint temperature Tel is associated with the first period PI and a setpoint temperature Tc2 is associated with the second period P2, Tc2 being different from Tel.

[0070] The method 100 comprises an anticipation step 101 (ANT) to reach the set temperature Tc2 of the second period P2 during the period PI, over an anticipation time noted ta.

[0071] To do this, step 101 comprises a step 102 of measuring (MES) the air temperature in zone Z, Tz, for example using the temperature sensor 17. D is called the absolute value of the temperature difference between the set temperature of the second period Tc2 and the measured temperature Tz. In other words, the following formula I can be written: D=ITc2-TzI.

[0072] The anticipation time ta (in minutes or seconds) is written as the product of an anticipation value Va (in minutes / °C or seconds / °C) by the difference D (in °C). Thus, we can write the following formula II: ta=Va*D.

[0073] Step 101 includes a step 103 of determining (DET) the anticipation time ta. During this step, ta is calculated by applying formula II above.

[0074] According to a first embodiment, the anticipation value Va is fixed, preprogrammed. It is for example between 10 minutes / °C and 45 minutes / °C, for example 30 minutes / °C. Thus, the activation time can be equal to a value between 10 and 180 minutes and is preferably set to 90 minutes.

[0075] According to a second embodiment, the anticipation value Va is adaptive. In this case, the value Va is directly linked to the losses of the zone Z. The value Va is inversely proportional to the level of insulation of the zone Z: the better the zone is insulated, the lower the value of Va.

[0076] According to this second embodiment, the method 100 is iterative. At the start of the system 1, that is to say at the first iteration, the method carries out the steps 102 and 103, as already explained. The value Va is fixed beforehand. It is for example between 10 minutes / °C and 45 minutes / °C, for example 30 minutes / °C.

[0077] The method 100 then comprises a succession of steps 104 to 107 for each iteration, i, as will be detailed.

[0078] The method 100 comprises a set of two steps referenced 104 and 105. During step 104 (MESS), the system 1 measures the temperature Tz. During step 105 (DIFF), the system 1 calculates the difference between the measured temperature Tz and the set temperature of the second period Tc2, i.e. the temperature which is sought to be reached. The set of two steps 104 - 105 is repeated at a given frequency. For example, the frequency is between 1 second and 10 minutes and more preferably 40 seconds.

[0079] When the ambient temperature Tz has reached the setpoint value Tc2 (for a change from period PI to P2), at time Mi5 the method 100 comprises a step (CALC-Vaci) 106 of calculating a corrected value of the anticipation value, Vaci, using formula II, in which the activation time tai is equal to the time difference between the time M; where the setpoint temperature Tc2 is reached and the previous activation time ta.

[0080] In other words, during step 106, Vaci=(Mi- ta;_i) / Tc2 is calculated.

[0081] During a step 107, called convergence (CONV), the new anticipation value VaN is determined; which depends on the corrected value Vac;.

[0082] At a minimum, the calculation is done over two iterations. Thus, we calculate VaN2 according to the following formula III: VaN2 = (Va + Vac^H

[0083] Advantageously, the calculation is done over four iterations. Thus, VaN4 is calculated according to the following formula IV:

[0084] VaN^ = + Vac^ / 4

[0085] Preferably, the calculation is done over twenty iterations. Thus, VaN2o is calculated according to the following formula V:

[0086] (vtip 19 \ . E^ VaN m + Vac 20 ) / 2Q

[0087] More generally, we can choose to do the calculation on a number U. In this case, we calculate VaNu according to the following formula VI:

[0088] Van v = j VaN m + Vac v ) / U

[0089] In [Fig.4], an example has been given, of course non-limiting, of programming the set temperature in zone Z over 24 hours. On this daily schedule, a first period PI is defined, night period, between 00 and 6 a.m., then a second period P2, of presence, is defined between 6 a.m. and 9 a.m., followed by a third period P3, of absence, between 9 a.m. and 6 p.m. and a fourth period P4, of presence, between 6 p.m. and 10 p.m. and finally a last period P5, night, from 10 p.m.

[0090] Each night period is, in the example of [Fig.4], associated with a set temperature of 19°C, while each period of presence is associated with a temperature of 21°C and each period of absence is associated with a temperature of 15.5°C.

[0091] According to this example, the anticipation value is fixed, and equal to 30 minutes / °C.

[0092] We now detail the implementation of the method 100 using the example of [Fig.3], for each change of periods.

[0093] The anticipation of the second period P2 during the first period PI comprises the step 102 of measuring the air temperature in the zone Z. During the step 102, consider that a temperature Tz=19°C is measured. During the step 103, ta=Va*D=30*I21-191=60 minutes is calculated.

[0094] Thus, system 1 begins heating one hour before the programmed setpoint change.

[0095] The anticipation of the third period P3 during the second period P2 comprises the step 102 of measuring the air temperature in the zone Z. During step 102, consider that Tz=20°C is measured. During step 103, ta=Va*D=30*I15.5-201= 135 minutes is calculated.

[0096] Thus, system 1 begins to cool 135 minutes before the programmed setpoint change.

[0097] The anticipation of the fourth period P4 during the third period P3 comprises the step 102 of measuring the air temperature in the zone Z. During the step 102, consider that Tz=16°C is measured. During the step 103, ta=Va*D=30*I21-161= 150 minutes is calculated.

[0098] Thus, system 1 begins to cool 150 minutes before the programmed setpoint change.

[0099] The anticipation of the fifth period P5 during the fourth period P4 includes the step 102 of measuring the air temperature in the zone Z. During the step 102, consider that Tz=21°C is measured. During the step 103, ta=Va*D=30*H 9-211=60 minutes is calculated.

[0100] Thus, system 1 begins to cool 60 minutes before the programmed setpoint change.

[0101] Referring again to [Fig. 3], the method 100 comprises a step 108 (VIT) of changing the speed of the fan coil 3 from the anticipation time ta. Thus, when the system 1 begins to heat or cool, at time ta, the speed of the fan coil 3 changes, in order to reach the set temperature at the time of the change of periods. The value of the anticipation time is determined over a period where the fan speed is already changed. Since the anticipation time is variable, it is possible that the temperature is not reached in time or that it is reached too early. The system will adapt and correct the anticipation time for the next iterations.

[0102] For example, in the event of an increase in the set temperature in heating mode, and conversely in the event of a decrease in the set temperature in cooling mode, it is planned to anticipate the changes in set temperature either at speed level identical (therefore at a constant noise level) or at a higher speed level, but taking place in the absence of users.

[0103] As a result, the user benefits from greater comfort, since each set temperature is reached at the chosen, programmed time. In addition, increasing the fan speed when users are absent and then reducing it once users are present greatly optimizes user comfort.

[0104] We now refer to Figures 5 and 6 in order to better visualize the implementation of step 108.

[0105] As can be seen from these figures, the set temperature (Te) is equal to 15.5°C from midnight to 6 a.m., then 19°C between 6 a.m. and 5 p.m. and finally 15.5°C from 6 p.m.

[0106] According to the prior art, the fan speed (curve V) increases its speed from low speed to high speed at the change of periods at 6 a.m. and then decreases its speed from high speed to low speed at the change of periods at 6 p.m. Thus, the temperature Tz (curve Tz) in zone Z increases progressively from 6 a.m. to reach the expected set temperature Tc2 around 8 a.m., when it stabilizes, before decreasing from 6 p.m. to reach the expected set temperature Tc3 at 11 p.m.

[0107] According to the method 100, from the anticipation time (around 3:30 a.m.), the fan speed (dotted curve) increases from reduced speed to high speed until the change of period, at 6 a.m., then remains at reduced speed throughout the day. Thus, the temperature Tz (dashed curve) in the zone Z increases progressively from 3:30 a.m. to reach the set temperature Tc2 at 6 a.m., at which time it stabilizes, before decreasing from 6 p.m. to reach the expected set temperature Tc3 at 11 p.m.

[0108] It is noted that at the end of step 103, or even before it, depending on the temperature Tz, the fan speed and the anticipation value, it is possible that the temperature Tc2 cannot be reached by simply modifying the fan speed.

[0109] For example, the method 100 comprises a preliminary step of calculating the thermal power required to change the set temperature. And, if the power required is greater than the power that the system 1 can provide, the method 100 comprises a step of modifying the water outlet temperature TD.

[0110] Thus, in this case, the method 100 comprises a step 109 of calculating (CAL - TD ) a new water outlet temperature TD of the energy transformation equipment 2. The energy transformation equipment 2 defines the water outlet temperature TD as a function of all the states of the system. The temperature TD is then increased or decreased as a function of the activation of a hot or cold mode. This change in water temperature TD allows the set temperature to be reached without changing the noise level in the room.

[0111] We now refer to [Fig.7] in order to better visualize the implementation of step 109.

[0112] As visible in this figure, the set temperature Tc2 is 19°C. The temperature Tz in zone Z is 17.5°C. The thermal power required to reach Tc2 being greater than the thermal power achievable with the parameters of system 1, including the (reduced) speed of the fan, and the water outlet temperature Td of 35°C, then, at step 109, the temperature TD is switched to 45°C at the time of the change of period P1-P2.

[0113] In this case, with the fan speed remaining unchanged at the minimum level, the set temperature Tc2 is reached around 8 a.m., when the temperature in the hydraulic circuit reaches 45°C. The temperature measurement can be carried out on the transmitter or on the energy transformation equipment.

[0114] We now refer to [Fig.8] which presents a flowchart of the method 100 in its embodiment with fixed anticipation value. As can be seen from this figure, the first diamond corresponds to the activation of the anticipation step 101 for a fixed anticipation value and anticipation time. Here, ta = 90 minutes. At time ta before the change of period, there is (rectangle) an increase in the fan speed, to reach the set temperature Tc2 during step 108. Once the temperature Tc2 is reached, the system 1 decreases the fan speed (second rectangle).

[0115] We now refer to [Fig.9] which presents a flowchart of the method 100 in its embodiment with anticipation value by iterations. As can be seen from this figure, the first diamond corresponds to the activation of step 101 for an anticipation value and an anticipation time set to a default value. Here, ta=90 minutes. At time ta before the change of period, there is (rectangle) an increase in the fan speed, to reach the set temperature Tc2 during step 108. Once the temperature Tc2 is reached, the system 1 decreases the fan speed (second rectangle). As already explained, then, during steps 104 to 107, the anticipation time is corrected.

[0116] We now refer to [Fig. 10] which presents a flowchart relating more particularly to step 109. As is clear from this figure, when it is necessary to change the fan speed (first diamond), the energy transformation equipment 2 and the transmitter 3 exchange information (first rectangle) to allow the calculation of a new water outlet temperature TD of the energy transformation equipment 2 (second rectangle). Once determined, the new water outlet temperature is applied by the method 100 (third rectangle).

[0117] We now cite a few non-limiting examples which can be combined with each other.

[0118] According to a first example, the transmitter 3 is a fan coil equipped with the human-machine interface 19 on which three modes can be set: presence, absence and night. These modes are associated with temperature setpoints and are defined temporally by day of the week. During the presence and night modes, the fan speed is limited to a medium value for presences and a low value for night. In absence mode, the fan speed is not limited. It is also possible to activate a heating mode and a cooling mode.

[0119] The transmitter 3 is equipped with a tangential fan. The fan coil is also equipped with the control module 18, connected by a wired connection to the human-machine interface which measures the air temperature of the room and the water temperature. It also allows the fan speed to be modulated and communicates with the energy transformation equipment 2, of the heat pump type, the optimum water outlet temperature, via a Zigbee radio connection.

[0120] Depending on the modes defined during the day, the control module 18 modifies its water temperature and communicates it to the heat pump 2 in order to maintain the temperature in the room while limiting the fan speeds. Depending on the changes in the set temperature, the control module 18 anticipates the change and increases the fan speed to limit noise during periods of presence or night.

[0121] According to a second example, the fan coil 3 is equipped with the human-machine interface 19 on which a setting of three speeds is possible (low, medium and high). These speeds are defined temporally by day of the week. The fan coil 3 is equipped with axial fans. It is also possible to activate a heating mode and a cooling mode.

[0122] The transmitter 3 is also equipped with the control module 18, connected by a wired link to the human-machine interface which measures the air temperature of the room and the water temperature. It also allows the speed of the fans to be modulated and communicates with a heat pump the optimum water outlet temperature, via a Zigbee radio connection.

[0123] Depending on the speeds set during the day, the control module 18 modifies its water temperature and communicates it with the heat pump 2 in order to maintain the temperature in the room while limiting the speed of the fans. Depending on the speed changes, the control module 18 anticipates the change and increases the fan speed to limit noise during periods when the speed is reduced.

[0124] As is clear from the above, the method 100 and the system 1 ensure great acoustic comfort, due to the anticipation of period changes, which in particular, allow fans to operate at high speed when users are absent, while maintaining satisfactory system performance 1, making it possible to achieve each set temperature desired by users.

Claims

Claims

1. Method for controlling a ventilation, heating and / or cooling system of an air flow (F) of a zone (Z), such as a living room, at a given set temperature (Te), this system (1) comprising energy transformation equipment for supplying a heat transfer fluid (2) at a starting temperature (TD), at least one thermal emitter (3) provided with a variable speed air ventilation means and a hydraulic circuit (4) for connecting the energy transformation equipment (2) to said at least one thermal emitter (3), the method (100) comprising a step of modifying the starting temperature of the heat transfer fluid (TD), when the given set temperature (Te) is not reached after a predetermined period of time or when, after calculation,it is determined that the power required to reach the given set temperature (Te) is greater than the power that the system (1) can provide taking into account the speed level of said ventilation means, said speed of said ventilation means being kept unchanged.

2. Control method according to claim 1, characterized in that the speed of said ventilation means is lower than the maximum speed of said ventilation means, preferably equal to the lowest speed of said ventilation means or even better up to 25% of the maximum speed of said ventilation means.

3. Air cooling system for ventilation, heating and / or cooling of an air flow (F) of a zone (Z), such as a living room, to a given set temperature (Te), the system (1) comprising energy transformation equipment for supplying a heat transfer fluid (2) at a flow temperature (TD), at least one thermal emitter (3) provided with a variable speed air ventilation means and a hydraulic circuit (4) for connecting the energy transformation equipment (2) to said at least one thermal emitter (3), the system being programmed to deliver, according to a time sequence of at least a first period (PI) and a second period (P2), a set temperature (Tel; Tc2) and a speed level of said ventilation means being associated with each period, the system comprising a unit of control configured to implement the control method according to claim 1 or 2.

4. Computer program comprising instructions for implementing the method according to claim 1 or 2, when this program is executed by a processor.

5. A non-transitory recording medium readable by a computer on which is recorded a program for implementing the method according to claim 1 or 2, when this program is executed by a processor.

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