METHOD FOR SETTING A THERMOSTATIC VALVE

Abstract

The present invention relates to a method and device for setting the thermostatic head of a thermostatic valve in a room of a building. The thermostatic valve comprises a valve body and a thermostatic head comprising a motor and a piston that causes total or partial circulation, or no circulation, of fluid in the valve body. According to the invention: - the motor is activated (E500) to prevent fluid from circulating in the valve body, - it is checked (E502) whether the setting conditions are met, - the motor is activated (E503) to allow fluid to circulate in the valve body, - a first temperature is measured (E505), - the motor is activated (E508) to allow all the fluid to circulate in the valve body, - a second temperature is measured (E510), - the two measurements are compared (E513), - room temperature control parameters are applied (E514, E515) according to the result of the comparison.Figure to be published with the abbreviation: Fig. 5.

Description

Title of the invention: METHOD FOR SETTING A THERMOSTATIC VALVE Technical field

[0001] The present invention relates to a method for setting a thermostatic valve for controlling and regulating a domestic heating installation with fluid circulation. STATE OF PRIOR ART

[0002] A thermostatic valve is a valve that controls the flow of fluid in a radiator. Traditionally, thermostatic valves have a heat-sensitive sensor, which expands and contracts depending on the ambient temperature and which activates a mechanical system, which allows an appropriate quantity of fluid to pass through. A thermostatic valve is also known as a thermostatic tap.

[0003] A thermostatic valve consists of a valve body and a thermo head static. The thermostatic head allows you to set a desired temperature in a room of a building by moving a movable element included in the valve body which modulates the quantity of fluid circulating in the radiator.

[0004] There are three types of thermostatic heads, mechanical thermostatic heads, electronic thermostatic heads and connected thermostatic heads.

[0005] Mechanical thermostatic heads are the most classic thermostatic heads, with a visible graduation ranging from 1 to 5 and a frost protection mode, they are not programmable. They are manually adjustable, only.

[0006] Electronic thermostatic heads are easy to control and have the same advantages as mechanical ones, but benefit from a display and digital control to the nearest half degree. Electronic thermostatic heads are programmable, whether for hourly or weekly programs. They are controlled directly on the valve or via the room thermostat.

[0007] Connected thermostatic heads are the new version of thermostatic heads and work in connection to an Internet network and sometimes with a connected thermostat.

[0008] There are many valve bodies on the market with widely varying technical characteristics. [Fig.l] illustrates an example of variations in fluid flow rate as a function of the movement of a thermostatic head for different valve bodies. The curve marked 10 represents the variations in fluid flow rate as a function of the movement of a moving element of a valve body for a valve body with linear response and the curve marked 20 represents the variations in fluid flow rate as a function of the displacement of a moving element of a valve body for a valve body with non-linear response. It should be noted here that the valve bodies, due to their structure, have different linearities.

[0009] Sometimes valve bodies have a different opening point. The opening point is the point from which the fluid flows through the valve body and therefore the radiator.

[0010] In the example of [Fig. 1], the opening point is represented by the notation X%.

[0011] On the abscissa axis, the position corresponding to the displacement of the element moving the valve body to a position that does not allow fluid to flow into the valve body is noted Min.

[0012] It is possible to associate these valve bodies with thermostatic heads that can be motorized and connected. These thermostatic heads integrate a regulation allowing the temperature of the room to be controlled with a setpoint set by the user. The regulation of the thermostatic head has an action on the valve body in order to circulate a certain flow in the radiator. However, the valve bodies have different linearities depending on the brand or model.

[0013] Thus for the same temperature setpoint and therefore the same action of the thermostatic head motor on the valve body, it is possible to obtain widely different flow rates and generate instabilities in the temperature regulation.

[0014] These instabilities result in particular in excess energy consumption due to untimely movements of the motor. This is particularly problematic when the thermostatic head is powered by a battery.

[0015] It is particularly desirable to provide a solution which makes it possible to guarantee uniform flow rates regardless of the type of valve body. Statement of the invention

[0016] A method is proposed for setting a thermostatic head of a thermostatic valve for controlling and regulating a domestic heating installation with circulation of fluid in a room of a building, the thermostatic valve comprising a valve body and a thermostatic head, the thermostatic head comprising a motor for moving a piston of the thermostatic head, the movement of the piston causing a movement of a movable element of the valve body, the movable element of the valve body allowing circulation in whole or in part or not allowing circulation of fluid in the valve body, characterized in that the method comprises the steps of:

[0017] - motor control to move the piston to a position in which the element mobile valve body does not allow fluid to circulate in the valve body,

[0018] - triggering of a time delay of a first predetermined duration,

[0019] - verification, at the end of a time delay of a second predetermined duration completed, if thermostatic valve setting conditions are met, the thermostatic valve setting conditions being a temperature of the room of the building lower than a predetermined temperature and variations in the temperature of the room of the building during the time delay of a second predetermined duration are lower than a first predetermined threshold,

[0020] - motor control to move the piston a predetermined distance for cause the moving element of the valve body to move in a direction allowing fluid to flow through the valve body,

[0021] - ordering a first measurement of the temperature of the room of the building after the lapse of a time delay of a third predetermined duration and storage of the first measurement,

[0022] - motor control to move the piston and cause the movement of the movable element of the valve body in a position not allowing fluid to circulate in the valve body,

[0023] - waiting for a time delay of a fourth predetermined duration to elapse,

[0024] - motor control to move the piston and cause the movement of the movable element of the valve body in a position allowing all of the fluid to circulate in the valve body,

[0025] - ordering a second measurement of the temperature of the room of the building after the elapse of the time delay of the third predetermined duration and storage of the second measurement,

[0026] - comparison of the second measurement to the first measurement multiplied by a co efficient,

[0027] - application of parameters for regulating the temperature of the room of the building in depending on the result of the comparison.

[0028] The invention also relates to a device for setting a thermostatic head of a thermostatic valve for controlling and regulating a domestic heating installation with circulation of fluid in a room of a building, the thermostatic valve comprising a valve body and a thermostatic head, the thermostatic head comprising a motor for moving a piston of the thermostatic head, the movement of the piston causing a movement of a movable element of the valve body, the movable element of the valve body allowing circulation in whole or in part or not allowing circulation of fluid in the valve body, characterized in that the setting device comprises:

[0029] - motor control means for moving the piston to a position in the which the moving element of the valve body does not allow fluid to circulate in the valve body,

[0030] - means for triggering a time delay of a first predetermined duration finished,

[0031] - verification means, at the end of a time delay of one second predetermined duration, if thermostatic valve setting conditions are met, the thermostatic valve setting conditions being a temperature of the building room lower than a predetermined temperature and variations in the temperature of the building room during the time delay of a second predetermined duration are lower than a first predetermined threshold,

[0032] - motor control means for moving the piston a predetermined distance completed to cause the moving element of the valve body to move in a direction allowing fluid to flow through the valve body,

[0033] - means for controlling a first measurement of the temperature of the room of the building after the expiration of a time delay of a third predetermined duration and storage of the first measurement,

[0034] - means for controlling the motor to move the piston and cause the de placing the moving element of the valve body in a position that does not allow fluid to circulate in the valve body,

[0035] - means for waiting for the elapse of a time delay of a fourth duration predetermined,

[0036] - means for controlling the motor to move the piston and cause the de placing the moving element of the valve body in a position allowing all of the fluid to circulate in the valve body,

[0037] - means for controlling a second measurement of the temperature of the room of the building after the third predetermined time has elapsed and the second measurement has been stored,

[0038] - means for comparing the second measurement to the first multiplied measurement by a coefficient,

[0039] - means for applying room temperature regulation parameters of the building depending on the result of the comparison.

[0040] Thus, the present invention provides a solution which makes it possible to guarantee uniform flow rates regardless of the type of valve body and which is economical in electrical energy.

[0041] According to a particular embodiment, the method is executed a plurality of times and at least part of the stored temperatures are used to determine the temperature regulation parameters of the room of the building according to the result of the comparison.

[0042] Thus, the regulation is precisely adapted to the valve body.

[0043] According to a particular embodiment, the first predetermined duration is equal to 24 hours, the second predetermined duration is equal to one hour, the third predetermined duration is equal to 20 minutes and the fourth predetermined duration is equal to 60 minutes.

[0044] Thus, the first predetermined duration allows the thermostatic valve to be configured under repeatable conditions. The second predetermined duration guarantees temperature stability. The third predetermined duration allows sufficient time to see the effect of the control action. The fourth predetermined duration allows the temperature to return to the initial conditions.

[0045] According to a particular embodiment, the predetermined temperature is equal to 17°C, the first predetermined threshold is equal to 0.5°C / hour and the second predetermined threshold is equal to 3°C / hour.

[0046] Thus, the temperature of 17° makes it possible to be in conditions in which no other energy input other than that caused by the movement of the mobile element of the valve body disturbs the setting of the thermostatic valve.

[0047] According to a particular embodiment, the predetermined distance is equal to 15% of the total displacement distance of the piston actuating the displacement of the movable element of the valve body plus 20% of the total remaining displacement distance of the piston or is equal to the displacement distance to go to an opening point plus 20% of the total remaining displacement distance of the piston actuating the displacement of the movable element of the valve body.

[0048] Thus, this distance of 20% makes it possible to position oneself in an area where the non-linear valve will be practically at maximum power.

[0049] Also provided is a computer program, which may be stored on a medium and / or downloaded from a communications network, in order to be read by a processor. This computer program comprises instructions for implementing the method performed by an internet gateway, as mentioned above, when said program is executed by the processor. The invention also relates to an information storage medium storing such a computer program. Brief description of the drawings

[0050] The characteristics of the invention mentioned above, as well as others, will appear more clearly on reading the following description of at least one exemplary embodiment, said description being made in relation to the attached drawings, among which:

[0051] [Fig. 1] illustrates an example of variations in fluid flow rate as a function of the movement of a thermostatic head for different valve bodies;

[0052] [Fig.2] schematically illustrates an example of a hardware arrangement of a controller included in a thermostatic head according to the present invention;

[0053] [Fig.3] schematically illustrates an example of a hardware arrangement of a valve thermostatic comprising the present invention and whose valve body type is linear comprising the present invention;

[0054] [Fig.4] schematically illustrates an example of a hardware arrangement of a valve thermostatic comprising the present invention and whose valve body type is non-linear comprising the present invention;

[0055] [Fig.5] schematically illustrates an example of an algorithm executed by a controller according to the present invention.

[0056] DETAILED DESCRIPTION OF EMBODIMENTS

[0057] [Fig.2] schematically illustrates an example of a hardware arrangement of a controller included in a thermostatic head according to the present invention.

[0058] The Cont controller comprises, connected by a communication bus 201: a processor Proc 200; a RAM (Random Access Memory) 203; a ROM (Read Only Memory) 202 or a Flash memory; a radio interface 204 and an input / output interface 206.

[0059] The input / output interface 206 makes it possible to control the rotation of a motor included in the thermostatic head, to obtain a temperature from a temperature sensor included in the thermostatic head.

[0060] The processor Proc 200 is capable of executing instructions loaded into the RAM memory 203 from the ROM memory 202, an external memory (such as an SD card), a storage medium (such as the hard disk HDD), or a communication network. When the controller Cont is powered up, the processor Proc 200 is capable of reading instructions from the RAM memory 203 and executing them. These instructions form a computer program causing the processor Proc 200 to implement all or part of the behaviors, algorithms and steps described herein.

[0061] Thus, all or part of the algorithms and steps described herein may be implemented in software form by executing a set of instructions by a programmable machine, such as a DSP (Digital Signal Processor) or a microcontroller or a processor. All or part of the algorithms and steps described herein may also be implemented in hardware form by a machine or a component (chip), such as an FPGA (Field-Programmable Gate Array) or an ASIC (Application-Specified Integrated Circuit). Thus, the Cont controller comprises electronic circuitry adapted and configured to implement the behaviors, algorithms and steps described herein.

[0062] [Fig.3] schematically illustrates an example of a hardware arrangement of a valve thermostatic comprising the present invention and whose valve body type is linear comprising the present invention.

[0063] The thermostatic head 100 comprises a controller Cont, a motor 301, transmission means 302, a piston 303 and a temperature sensor 300.

[0064] The valve body 304 comprises a movable element 306 actuated by the piston 303, the movement of which modulates the quantity of fluid circulating in a conduit 305 connected to a radiator not shown in [Fig.3].

[0065] When the movable element 306 is at a position denoted Min in [Fig.3], the movable element 306 does not allow fluid to pass into the valve body. This position is called the minimum stop.

[0066] When the movable element 306 is at a position marked Max in [Fig.3], the movable element 306 allows the fluid to pass through the entire conduit of the valve body. This position is called the maximum stop.

[0067] When the movable element 306 is at a position between Min and Max, the movable element 306 partially allows the fluid to pass into the conduit of the valve body. To represent the different positions taken by the movable element 306, the term percentage opening of the valve body is sometimes used.

[0068] [Fig.4] schematically illustrates an exemplary hardware arrangement of a thermostatic valve comprising the present invention and having a non-linear valve body type comprising the present invention.

[0069] The thermostatic head 100 comprises a controller Cont, a motor 301, transmission means 302, a piston 303 and a temperature sensor 300.

[0070] The valve body 404 comprises a movable element 406 actuated by the piston 303, the movement of which modulates the quantity of fluid circulating in a conduit 405 connected to a radiator not shown in [Fig.3].

[0071] When the movable element 406 is at a position denoted Min in [Fig.4], the movable element 406 does not allow fluid to pass into the valve body. This position is called the minimum stop.

[0072] When the movable element 406 is at a position marked Max in [Fig.4], the movable element 406 allows the fluid to pass through the entire conduit of the valve body. This position is called the maximum stop.

[0073] When the movable element 406 is at a position between Min and Max, the movable element partially allows the fluid to pass into the conduit of the valve body. To represent the different positions taken by the movable element 406, the term percentage opening of the valve body is sometimes used.

[0074] [Fig.5] schematically illustrates an example of an algorithm executed by a controller according to the present invention.

[0075] This algorithm is executed when installing the thermostatic head on a valve body already installed.

[0076] Prior to step E500, a calibration is performed.

[0077] The calibration step makes it possible to determine the maximum distance that the piston 303 can travel and cause the positioning of the movable element 306 or 406 in abutment with a lower wall of the valve head 304 or 404. This maximum distance is determined by comparing a measurement of the current delivered to the motor 301 with a predetermined value. This value is called the total displacement distance of the piston 303. The position of the piston 303 corresponding to this distance is the minimum stop.

[0078] A maximum stop is also determined, the maximum stop corresponds to the distance traveled by the piston 303 to place the movable element outside the conduit 305 or 405. For example, the maximum stop is a predefined value.

[0079] In step E500, the controller Cont controls the motor Mot 301 to rotate it to achieve a movement of the piston 303 such that the movable element of the valve body is in a position that does not allow fluid to circulate in the valve body and activates a time delay of a first predetermined duration. The first predetermined duration is for example greater than or equal to 24 hours. When the 24-hour time delay has elapsed, the controller Cont goes to step E501.

[0080] It should be noted here that as a variant, step E500 is executed by the controller Cont after step E516 which will be described later.

[0081] In step E501, the controller Cont activates a time delay of a second predetermined duration. The second predetermined duration is for example at least equal to 1 hour. When the 1-hour time delay has elapsed, the controller Cont proceeds to step E502.

[0082] In step E502, the controller Cont checks whether the thermostatic valve setting conditions are met. The thermostatic valve setting conditions are defined to detect a certain increase in the temperature measured by the thermostatic valve head which coincides with a circulation of fluid in the radiator and therefore the crossing of the opening point of the valve body. Since the temperature rise associated with the opening of the valve body is low, it is important to trigger this detection phase when the conditions in the room are suitable.

[0083] Thus, the temperature in the room must be sufficiently low, i.e. in a range of 14°C to 18°C, for example equal to 17°C. These conditions are generally obtained at night in winter. The other condition imposes a low variation in the temperature in the room, i.e. less than 0.5°C / hour in absolute value. Indeed, if this is too great, it could mask the increase in temperature generated by the detection of the opening point of the valve body.

[0084] Thus the conditions for setting the thermostatic valve are a temperature of the room of the building in a range of 14°C to 18°C, and that the variations in the temperature of the room of the building during the time delay of a second predetermined duration are less than 0.5°C in absolute value.

[0085] If the thermostatic valve setting conditions are met, the Cont controller goes to step E503. If not, the Cont controller returns to step E501.

[0086] In step E503, the controller Cont controls the motor Mot 301 to rotate it to achieve a displacement of the piston 303, starting from the minimum stop, at a predetermined distance equal to 15% of the total displacement distance of the piston 303 actuating the displacement of the movable element of the valve body plus 20% of the remaining displacement distance of the piston 303 or is equal to the displacement distance to go, starting from the minimum stop, to an opening point plus 20% of the remaining displacement distance of the piston actuating the displacement of the movable element of the valve body.

[0087] The remaining travel distance of the piston 303 is the distance between the minimum stop plus 15% of the total travel distance of the piston 303 and the maximum stop or the distance between the opening point and the maximum stop.

[0088] The opening point is the point from which the fluid flows through the valve body and therefore the radiator.

[0089] The opening point is for example determined in the following manner:

[0090] - waiting for a 24-hour time delay to elapse,

[0091] - verification, at the end of a time delay of duration at least equal to 10 min, if thermostatic valve setting conditions are met, the thermostatic valve setting conditions being a temperature of the room of the building lower than a predetermined temperature and variations in the temperature of the room of the building during the time delay of a second predetermined duration are lower than a first predetermined threshold,

[0092] - control of the motor included in the valve head to move the piston one distance equal to 5% of the total distance of movement of the piston actuating the movement of the moving element of the valve body,

[0093] - measurement of the temperature of the building room after the elapse of a time ization of a duration equal to 10 minutes,

[0094] - comparison of the variations in the temperature of the room of the building during the tem porization of the Omni at a second predetermined threshold,

[0095] - reiteration of the control verification and measurement steps as long as the va variations in the temperature of the building room during the time delay of 10 min are lower than the predetermined variation threshold,

[0096] - storing the distance the piston was moved as the point opening of the thermostatic valve head.

[0097] In step E504, the Cont controller activates a time delay of a third predetermined duration. The third predetermined duration is for example equal to 20 minutes. When the 20-minute time delay has elapsed, the Cont controller goes to step E505.

[0098] The principle of the invention consists in differentiating between linear and non-linear valve bodies by comparing the temperature increases measured by the thermostatic valve head for different valve body opening setpoints. Thus, if the temperature increase, starting from the opening point or 15% of the total displacement distance of the piston, for a displacement of 20% of the remaining displacement distance of the piston 303 is equivalent to a temperature increase for a total opening of the valve, this means that the valve body has a non-linear behavior. Conversely, the valve body has a linear behavior.

[0099] A 20-minute time delay allows the inertia of the room and the radiator to be taken into account, the setpoint being maintained during this time.

[0100] In step E505, the controller Cont obtains a first measurement T'(l) of the temperature of the room of the building and stores it.

[0101] In step E506, the controller Cont controls the motor included in the thermostatic head to move the piston 303 and move the movable element of the valve body to a position not allowing fluid to circulate in the valve body.

[0102] In step E507, the Cont controller activates a time delay of a fourth predetermined duration. The fourth predetermined duration is for example equal to 60 minutes. When the 60-minute time delay has elapsed, the Cont controller goes to step E508.

[0103] In step E508, the controller Cont controls the motor Mot 301 to rotate it to achieve a movement of the piston 303 which corresponds to the maximum stop.

[0104] In step E509, the Cont controller activates a time delay equal to the third predetermined duration. When the 20-minute time delay has elapsed, the Cont controller moves to step E510.

[0105] In step E510, the controller Cont obtains a second measurement T'(2) of the temperature of the room of the building and stores it as well as an index value.

[0106] The index is equal to the value 1 at the first iteration of the algorithm.

[0107] In step E511, the Cont controller checks whether the value of the index is greater than 3. If so, the Cont controller goes to step E512. If not, the Cont controller goes to step E516.

[0108] In step E516, the controller Cont increments the value of the index by one unit and returns to step E500.

[0109] In step E512, the controller Cont performs processing on the three pairs of stored temperature values. The processing may, for example, consist of excluding a value that is significantly different from the other two values ​​T'(l) or T'(2) or of averaging all three stored T'(l) values ​​and averaging all three T'(2) values.

[0110] In step E513, the controller Cont determines whether the thermostatic valve is linear or not from the processing of the three pairs of temperature values. The controller Cont checks whether the temperature T'(2) is greater than 1.1 times the temperature T'(l).

[0111] If so, the Cont controller goes to step E514 and if not, the Cont controller goes to step E515.

[0112] In step E514, the controller Cont determines that the thermostatic valve is linear and applies minimum and maximum references to a PID regulation, the minimum reference is the position of the opening point or is equal to 15% of the total displacement distance of the piston 303 starting from the minimum stop, the maximum reference is that which approaches the maximum flow rate. For example, the maximum reference is equal to the minimum reference plus 60% of the total displacement distance of the piston 303.

[0113] In step E515, the controller Cont determines that the thermostatic valve is non-linear and applies minimum and maximum references to a PID regulation, the minimum reference is the position of the opening point or is equal to 15% of the total displacement distance of the piston 303 starting from the minimum stop, the maximum reference is that which approaches the maximum flow rate. For example, the maximum reference is equal to the minimum reference plus 35% of the total displacement distance of the piston 303.

Claims

1. Claims Method for setting a thermostatic head of a thermostatic valve for controlling and regulating a domestic heating installation with circulation of fluid in a room of a building, the thermostatic valve comprising a valve body and a thermostatic head, the thermostatic head comprising a motor for moving a piston of the thermostatic head, the movement of the piston causing a movement of a movable element of the valve body, the movable element of the valve body allowing circulation in whole or in part or not allowing circulation of fluid in the valve body, characterized in that the method comprises the steps of: - control (E500) of the motor to move the piston to a position in which the moving element of the valve body does not allow fluid to circulate in the valve body, - triggering (E500) of a time delay of a first predetermined duration, - verification (E502), at the end of a time delay of a second predetermined duration, whether conditions for setting the thermostatic valve are met, the conditions for setting the thermostatic valve being a temperature of the room of the building lower than a predetermined temperature and variations in the temperature of the room of the building during the time delay of a second predetermined duration are lower than a first predetermined threshold, - control (E503) of the motor of the motor to move the piston by a predetermined distance to cause the moving element of the valve body to move in a direction allowing the fluid to flow in the valve body, - command (E505) of a first measurement of the temperature of the room of the building after the lapse of a time delay of a third predetermined duration and storage of the first measurement, - command (E506) of the motor to move the piston and cause the movement of the movable element of the valve body to a position not allowing fluid to circulate in the valve body, - waiting (E507) for a time delay of a fourth predetermined duration to elapse, - command (E508) of the motor to move the piston and cause the moving element of the valve body to move to a position allowing all of the fluid to circulate in the valve body, - command (E510) of a second measurement of the temperature of the room of the building after the expiration of the time delay of the third predetermined duration and storage of the second measurement, - comparison (E513) of the second measurement with the first measurement multiplied by a coefficient, - application (E514, E515) of parameters for regulating the temperature of the room of the building according to the result of the comparison.

2. Method according to claim 1, characterized in that the method is executed a plurality of times and at least part of the stored temperatures are used to determine the temperature regulation parameters of the room of the building depending on the result of the comparison.

3. Method according to claim 1 or 2, characterized in that the first predetermined duration is equal to 24 hours, the second predetermined duration is equal to one hour, the third predetermined duration is equal to 20 minutes and the fourth predetermined duration is equal to 60 minutes.

4. Method according to any one of the preceding claims, characterized in that the predetermined temperature is equal to 17°C, the first predetermined threshold is equal to 0.5°C / hour and the second predetermined threshold is equal to 3°C / hour.

5. Method according to any one of the preceding claims, characterized in that the predetermined distance is equal to 15% of the total displacement distance of the piston actuating the displacement of the movable element of the valve body plus 20% of the remaining displacement distance of the piston or is equal to the displacement distance to go to an opening point plus 20% of the total remaining displacement distance of the piston actuating the displacement of the movable element of the valve body.

6. Device for setting a thermostatic head of a thermostatic valve for controlling and regulating a domestic heating installation with circulation of fluid in a room of a building, the thermostatic valve comprising a valve body and a thermostatic head, the thermostatic head comprising a motor for moving a piston of the thermostatic head, the movement of the piston causing a movement of a movable element of the valve body, the movable element of the valve body allowing fluid to circulate in whole or in part or not allowing fluid to circulate in the valve body, characterized in that the parameterization device comprises: - motor control means for moving the piston to a position in which the movable element of the valve body does not allow fluid to circulate in the valve body, - means for triggering a time delay of a first predetermined duration, - means for checking, at the end of a time delay of a second predetermined duration, whether the conditions for setting the thermostatic valve are met, the conditions for setting the thermostatic valve being a temperature of the room of the building lower than a predetermined temperature and variations in the temperature of the room of the building during the time delay of a second predetermined duration are lower than a first predetermined threshold, - means for controlling the motor to move the piston by a predetermined distance to cause the movement of the movable element of the valve body in a direction allowing the fluid to circulate in the valve body, - means for controlling a first measurement of the temperature of the room of the building after the expiration of a time delay of a third predetermined duration and storing the first measurement, - means for controlling the motor to move the piston and cause the movement of the movable element of the valve body to a position not allowing fluid to circulate in the valve body, - means for waiting for the expiration of a time delay of a fourth predetermined duration, - means for controlling the motor to move the piston and cause the moving element of the valve body to move to a position allowing all of the fluid to circulate in the valve body, - means for controlling a second measurement of the temperature of the room of the building after the expiration of the time delay of the third predetermined duration and storing the second measurement, - means for comparing the second measurement with the first measurement multiplied by a coefficient, - means of applying parameters for regulating the temperature of the building room depending on the result of the comparison.

7. Computer program product comprising instructions for implementing, by a processor, the method according to any one of claims 1 to 5, when said program is executed by said processor.

8. An information storage medium storing a computer program comprising instructions for implementing, by a processor, the method according to any one of claims 1 to 5, when said program is read and executed by said processor.

Images