System for heating environments

Abstract

The present invention relates to a heating device (100) for heating a flow of cold air (40) and obtaining a flow of hot air (41), said heating device (100) being characterized in that it comprises: a core (110), adapted to produce heat when immersed in a variable magnetic field, a radial heatsink (120), positioned around said core (110) to allow a heat exchange between said core (110) and said flow of cold air (40), an inductor (130), adapted to be traversed by a high-frequency alternating electric current to generate a variable magnetic field, said inductor (130) wrapping said radial heatsink (120) and said core (110), at least one insulating layer (131)for thermally insulating said core (110) from said inductor (130), a heat exchange chamber (140) adapted to contain said inductor (130), said core (110) and said radial heatsink (120), said heat exchange chamber (140) comprising an inlet for said flow of cold air (40) and a mixer (150) comprising an outlet (151) for said flow of hot air (41) surrounded by a plurality of openings (152) for the exit of part of said flow of cold air (40), and cooling means for cooling said inductor (130). The present invention also relates to a system for heating an environment.

Description

[0001] The present invention relates to a system for heating environments.

[0002] In particular, the present invention relates to a system for heating civil or industrial environments through induction technology.

[0003] As is known, induction heating technology is well known and widely used in the civil and industrial sectors. This technology consists of heating metal elements through magnetic fields obtained with windings crossed by alternating currents.

[0004] In recent years this technology has been applied, for example, in induction stoves or for heating and melting metals and for many other known and established applications.

[0005] Furthermore, on the market there are examples of induction boilers used for domestic heating. In these systems, the dispersion of the produced heat is, as a rule, greater the greater the distance from the boiler to one or more diffusers, also depending on the way in which the system is built. As a result, there are many situations in which, from the point of view of energy performance, it is convenient to transform energy into heat directly where one wants to use it.

[0006] Although there are tools to heat the air through induction technologies, this same technology is not used for producing autonomous heating apparatuses, that is, devices that perform their function by directly transforming electrical energy into heat and diffusing the heat itself into the environment in a single functional unit, with a performance suitable for this purpose.

[0007] In particular, there are no devices of this type that are designed taking into account the need to keep the maximum possible performance through containment of the temperature of the winding, which, by heating, decreases its electrical conductivity and, consequently, the performance of the device.

[0008] Therefore, in the specific sector, there is a need for an autonomous induction heating system.

[0009] This need is met by the system according to the present invention, which also offers further advantages that will become clear later.

[0010] The solution according to the present invention fits in this context, which aims at developing a system for domestic heating based on high-performance electromagnetic induction and characterized by the possibility of controlling multiple heating devices within the same system, to optimize consumption and absorption peaks in a smart way.

[0011] In particular, said system can be a modular system, composed of several devices automatically interconnected and controlled through a single interface.

[0012] Furthermore, said system can be supplied by multiple sources, potentially including solar photovoltaic, wind or other discontinuous renewable sources, to maximize consumption and efficiency, also through the possibility of avoiding absorption peaks that exceed the capacity of the systems.

[0013] These and other results are obtained according to the present invention by proposing an automatic system for heating environments by induction.

[0014] The aim of the present invention is therefore to provide a system for heating environments that allows to overcome the limits of the systems according to the known technology and to obtain the technical results previously described.

[0015] A further aim of the invention is that said system can be implemented with substantially low costs, both in terms of production costs and in terms of installation and management costs.

[0016] Not least, the aim of the invention is to propose a system for heating environments that is simple, safe and reliable.

[0017] It is therefore a specific object of the present invention a heating device for heating a flow of cold air and obtaining a flow of hot air, said heating device being characterized in that it comprises: a core, adapted to produce heat when immersed in a variable magnetic field, a radial heatsink, positioned around said core to allow a heat exchange between said core and said flow of cold air, an inductor, adapted to be traversed by a high-frequency alternating electric current to generate a variable magnetic field, said inductor wrapping said radial heatsink and said core, at least one insulating layer for thermally insulating said core from said inductor, a heat exchange chamber adapted to contain said inductor, said core and said radial heatsink, said heat exchange chamber comprising an inlet for said flow of cold air and a mixer comprising an outlet for said flow of hot air surrounded by a plurality of openings for the exit of part of said flow of cold air, and cooling means for cooling said inductor.

[0018] In particular, according to the present invention, each opening of said plurality of openings may comprise an inner surface and an outer surface, said outer surface being inclined towards said outlet and having a height greater than the height of said inner surface.

[0019] Still, according to the present invention, said cooling means may comprise at least one channel for the passage of said flow of cold air to cool said inductor, said channel being positioned inside said heat exchange chamber.

[0020] More particularly, according to the present invention, said heat exchange chamber may comprise an outer casing and an inner casing positioned inside said outer casing to form said channel.

[0021] Furthermore, according to the present invention, said core may be made of iron and said inductor may be made of copper or gold.

[0022] In particular, according to the present invention, said insulating layer may be a support of said inductor.

[0023] A further object of the present invention is a system for heating an environment, said system comprising: at least one heating device, at least one supply device for supplying each component of said system, an induction board adapted to generate a high-frequency alternating current, electrically connected to said inductor of said heating device, a control system adapted to control said at least one heating device.

[0024] Furthermore, according to the present invention, said system may comprise an air circulation system for circulating said flow of cold air inside said heat exchange chamber and said flow of hot air from said heat exchange chamber to said environment.

[0025] In particular, according to the present invention, said air circulation system may comprise a fan and an actuator.

[0026] Still, according to the present invention, said control system may comprise at least one sensor adapted to measure the temperature of said core and / or the temperature of said environment.

[0027] The present invention will now be described, by way of non-limiting illustration, according to a preferred embodiment thereof, with particular reference to the figures in the appended drawings, in which: figure 1 shows a perspective view of the system according to the present invention; figure 2 shows a perspective view of the heating device of the system according to the present invention, in which the heat exchange chamber is not shown, figure 3 shows a sectional view of the heat exchange chamber according to the present invention; figure 4 shows a side perspective view of the system according to the present invention; figure 5 shows a perspective view of the heating device of the system according to the present invention, in which the outer casing of the heat exchange chamber is not shown.

[0028] In the following, the description will be directed to a heating system for domestic environments but it is clear that it should not be considered limited to this specific use, since it can be applied, for example, also to industrial environments and work environments in general, as well as environments for sports, recreational or leisure activities.

[0029] With reference to figure 1, an automatic system for domestic heating is indicated as a whole with 1.

[0030] Furthermore, with reference to figures 1-3, said system 1 comprises at least one heating device 100, adapted to heat a flow of cold air 40 in input producing a flow of hot air 41 in output from said heating device 100.

[0031] Furthermore, still with reference to figure 1, said system 1 comprises an air circulation system 30 that pushes said flow of cold air 40 from the outside into a heat exchange chamber 140 and that pushes said flow of hot air 41 from said heat exchange chamber 140 to the outside, that is to the environment. In particular, said air circulation system 30 is able to circulate an amount of air suitable for the sizing of the respective heat exchange chamber. In particular, the sizing of said heat exchange chamber depends on the size of the room to be heated, the thermal jump to be achieved and the need to limit the noise of the device. Preferably, said system 1 allows the circulation of a number of cubic metres per hour equal to twice the cubic metres of the room to be heated.

[0032] Said air circulation system 30 may comprise at least one fan and / or a pump and / or an actuator 70. In particular, said at least one fan may be a centrifugal fan since it has an excellent performance and is not noisy. In alternative embodiments not shown, said air circulation system may be an ionic system or the like, which allows air circulation without mechanical components.

[0033] In particular, with reference to figures 2-5, said at least one heating device 100 comprises a core 110 adapted to heat up, said core 110 may be an iron element or other material suitable for induction heating.

[0034] In addition, with reference to figure 2-4, said at least one heating device 100 comprises a radial heatsink 120 positioned around said core 110, said radial heatsink 120 allows heat exchange with the air so as to effectively release heat into the environment. In fact, the heat generated by said core 110 is transferred to the air passing through said radial heatsink 120. In particular, said radial heatsink 120 must have a size sufficient to allow the dissipation of the heat produced by the core 110. In particular, said radial heatsink 120 is made of aluminium or copper or other heat-conducting material, provided that it lacks magnetic properties.

[0035] Still, with reference to figures 2-5, said at least one heating device 100 comprises an inductor 130 adapted to be traversed by a high-frequency alternating current so as to generate a magnetic field. Said inductor 130 can be a copper winding since said material has a high ratio of characteristics to cost. Preferably, said inductor 130 comprises a number of turns such as to ensure that it is placed in resonance with the frequency of an oscillator and has a diameter suitable for the power that is intended to be transferred to said core 110. In further embodiments said inductor 130 may be made of gold or other electrically conductive or superconductive material. Said inductor 130 wraps said core 110 and said radial heatsink 120, as visible in Figure 2. Under these conditions, both by irradiation and by contact through the insulator, the inductor 130 progressively heats up. Furthermore, said inductor 130 is placed at a certain distance from said core 110 and is separated from said core 110 and from said radial heatsink 120 through an insulating layer 131. In particular, said insulating layer 131 can be a tube of thermal insulating material with resistance to high temperatures and is configured to contain radiation. In fact, the movement of the air between said insulating layer 131 and said inductor 130 prevents contact heating.

[0036] Still, said insulating layer 131 can be made of pyrex when the core 110 reaches a maximum temperature of 265 °C. In the case of higher power systems, in order to cover spaces of larger areas or to power thermoventilation systems intended for multiple rooms, compact systems can be created capable of dissipating very considerable powers. In this case, the core 110 can heat up to 800 °C or more. Therefore, said insulating layer 131 can be made of ceramic or refractory material.

[0037] In particular, said inductor 130 comprises a hollow winding, inside which it is possible to make a liquid pass, if the device is made for large environments and therefore with high powers. Still, in a preferred embodiment, said inductor 130 has a cylindrical shape. Furthermore, said inductor 130 is powered by said induction board 20, so that said inductor 130 generates a magnetic field adapted to produce the induction effect on said core 110, heating it up.

[0038] In addition, with reference to figures 1, 3 and 4, said heating device 100 comprises a heat exchange chamber 140, adapted to contain said inductor 130, said core 110 and said radial heatsink 120.

[0039] In the embodiment shown in figure 3, said heat exchange chamber 140 comprises an outer casing 141 and an inner casing 142.

[0040] In particular, with reference to figures 2, 4 and 5, said outer casing 141 comprises a mixer 150 configured to mix said flow of cold air 40, coming from the outside, and said flow of hot air 41, produced by said heating device 100. In the embodiment shown in figure 2, said mixer 150 is positioned on a side surface 141' of said outer casing 141. In particular, said mixer 150 prevents overheated air to be directly introduced into the environment, which could be dangerous for people, things or pets. Furthermore, said mixer 150 allows to obtain a flow of air in output from said system at an average temperature comprised between 35°C and 40°C. In this way, the temperature in the affected rooms can be changed quickly.

[0041] In particular, said mixer 150 comprises a central outlet 151 surrounded by a plurality of openings 152. Said outlet 151 is positioned at said core 110 in such a way as to allow the exit of said flow of hot air 41, and said plurality of openings 152 allowing the exit of part of said flow of cold air 40. More particularly, each of said plurality of openings 152 may have a fixed or variable area. For example, in higher power systems, such as systems that are intended to heat rooms of considerable sizes, the thermal inertia phase has a longer duration and it could be useful to regulate air circulation during discharge. In fact, in such circumstances the core can be larger in size and reach higher temperatures, consequently the thermal inertia can increase.

[0042] In the embodiment shown in figures 1-2, 4-5 each opening 152 of said plurality of openings 152 comprises an inner surface 152' and an outer surface 152", said outer surface 152" is inclined towards said outlet 151 and has a height greater than the height of said inner surface 152'. In this way, the flow of air exiting from said plurality of openings 152 is pushed towards said outlet 151 allowing said flow of hot air 41 to be mixed with said flow of air exiting from said plurality of openings 152. This allows the air actually exiting from said system 1 to be lukewarm. Furthermore, the generated disturbances cause the flow of air to project into the surrounding environment in a diffused manner.

[0043] Furthermore, said system 1 may comprise a system for regulating the flow of air exiting said plurality of openings 241, such a system would allow a temperature regulation capable of reacting quickly to the needs of changing, even for short periods, the temperature. In addition, a slower regulation could be made in parallel, by changing the amount of current in the inductor 130, with slower temperature regulation times, more suitable for needs of changing temperature with longer duration.

[0044] Furthermore, said inner casing 142 forms a channel adapted to direct part of said flow of cold air 40, i.e. the flow of cold air 40 that does not exit from said plurality of openings 152, first onto said inductor 130 and then onto said core 110. This feature allows an increase in performance and avoids a drop in the temperature of the core 110. Furthermore, the passage of said flow of cold air 40 first on said inductor 130 allows to optimize the temperature on the surface of said inductor 130, a particularly important requirement for systems used in the home. In fact, if the temperature of the inductor 130 were to increase, due to the variation in electrical conductivity that the heating causes, the performance of the heating device 100 would decrease.

[0045] Furthermore, said system 1 comprises cooling means for said inductor 130. Said cooling means may be active or passive. In particular, the use of active cooling means is of interest when their electrical consumption represents a small portion of the overall consumption of the device, not compromising the performance thereof. In addition, said passive cooling means can be obtained by passing said flow of cold air 40 onto said inductor 130 before the entry of said flow of cold air 40 inside said radial heatsink 120.

[0046] Furthermore, said system 1 comprises at least one supply device 10 capable of adapting the network voltage (230V) to the voltage necessary for the operation of the system, i.e. to the characteristic voltage of each component of the system, i.e. in particular, generally, with regard to the components available on the market, a voltage comprised between 24V and 48V. In particular, said supply device 10 is able to provide the correct supply voltage to each component of said system 1. Accordingly, said system 1 for heating environments comprises a plurality of supply devices 10 or a multiple-outlet supply device 10. In the embodiment shown in figure 1, said system 1 for heating environments comprises a first supply device 101 for a control system 60 and a second supply device 102 for an induction board 20. The choice of having more supply devices 10 allows to completely switch off the system components that are not used, directly from the network power supply, which reduces consumption.

[0047] Furthermore, said system 1 comprises an induction board 20, i.e. an electrical circuit that receives a direct current as input and produces an alternating current at a high frequency as output. Said induction board 20 may be connected to an actuator 70 which, in one embodiment may be a relay. Said actuator 70 is adapted to switch on or off the induction card 20, and therefore to activate or deactivate said system 1.

[0048] In addition, said system 1 comprises a control system 60 adapted to control said at least one heating device 100.

[0049] Preferably, said control system 60 is connected to at least two temperature sensors (not shown), a presence sensor (not shown) and at least two actuators 70. In particular, said control system 60 can read the temperature of the core 110 measured by means of a temperature sensor placed therein. In addition, said control system 60 can read the environmental temperature, through a sensor placed outside the heat exchange chamber 140 or positioned outside said system 1. Furthermore, said control system 60 can detect the presence of people, through a presence sensor.

[0050] Furthermore, said control system 60 can be connected to at least two actuators 70. In particular, the first actuator 70 is capable of switching off or regulating the induction board 20 that supplies current to the inductor 130 and generates the high-frequency magnetic field capable of heating the core 110. The second actuator 70 is capable of switching on and off, or of regulating the air circulation system 30.

[0051] In addition, it is necessary to have in output from said supply device 10 a voltage suitable for supplying said control system 60, for example 3.3V or 5V, with a voltage suitable for supplying said cooling means, a voltage suitable for supplying said induction board 20 which in turn supplies said inductor 130.

[0052] With reference to figure 3, said flow of cold air 40 enters the heat exchange chamber 140, subsequently a part of said flow of cold air 40 passes, through said channel created between said outer casing 141 and said inner casing 142, through the inductor 130, cooling it, and subsequently passes through the radial heatsink 120, to heat up in contact with the core 110, producing a flow of hot air 41. Furthermore, a second part of said flow of cold air 40 exits from said plurality of openings 152 mixing with said flow of hot air 41 coming from said outlet 151.

[0053] In addition, said control system 60 comprises: a microcontroller (not shown), adapted to manage the automatic activation of at least one heating device 100 by controlling said air circulation system 30, said induction board 20, said cooling means by means of specific algorithms; a plurality of actuators 70, adapted to switch on or off the components of the system 1, said plurality of actuators 70 being able to be in the solid state or of the electromechanical type, said actuators in the solid state being preferred because they are quieter and more reliable; a plurality of sensors, adapted to measure the temperature of the core 110 and the temperature of the environment in which said system 1 is located, each sensor being able to be an infrared sensor or a thermocouple positioned in contact with said core 110 or inside said core 110.

[0054] In a preferred embodiment, said control system 60 is connected to the elements to be controlled by means of two solid-state relays. In further embodiments, devices for similar purposes may also be used, such as electromechanical relays or triacs or other similar components.

[0055] Still, said control system 60 is always on when the system 1 is in operation, since said control system 60 controls all the components of the system 1.

[0056] In a further embodiment, said control system 60 comprises a touch-screen display (not shown), adapted to control the heating devices 100 connected to said system 1. Through the display it is possible to set the desired temperature and the level of heating priority of the environment in which the heating device 100 is located.

[0057] Still, said control system 60 comprises a module for wireless communication with the other heating devices 100, in mesh mode or in AP mode, in case another heating device 100 is not available nearby but is reachable on a same Wi-Fi network.

[0058] In particular, said control system 60 receives input from a sensor positioned at said core 110, which detects the temperature thereof, and from a sensor which detects the temperature of the environment, as well as from other similar heating devices 100 connected via the network.

[0059] Furthermore, said control system 60 allows to smartly manage the heating of a number of environments or areas, using the system 1 according to the present invention, in order to optimize consumption and mitigate absorption peaks, which are hard to manage especially when powering the house using solar panels, wind systems or the like.

[0060] In particular, by measuring the temperature of the core 110 placed within an induction field, a faster increase can be observed at the beginning of the heating process, and, little by little, after reaching a peak increase, the increase itself will tend to decrease until the temperature stabilizes or has a slower increase. Furthermore, by keeping the temperature of the core 110 stable at the point of maximum increase, the maximum performance of the system 1 is obtained.

[0061] Furthermore, in an electrical conductor crossed by alternating current, the electrical density is mainly concentrated on the surface of the conductor, while it is lower in its inside. This phenomenon also occurs on the core 110. Consequently, the greater the surface of the core 110 exposed to the magnetic field and the greater the effect of the field itself on the core 110, obtaining a faster heating. Obviously, the electrical absorption will also be greater. However, a greater capacity will make it easier to stabilize the process, finding the right equilibrium points for maximum performance.

[0062] In one embodiment not shown, said system 1 comprises a presence sensor capable of detecting whether people are present within the range of action of the system 1. Furthermore, through the control system 60, the system 1 is able to learn the behaviours of the dwellers automatically modifying the operation of each heating device 100 present in the environment.

[0063] Furthermore, the system 1 allows the regulation of the operating powers of each area in order to avoid exceeding the maximum absorption thresholds of the system while keeping in any case as much as possible of the overall efficiency.

[0064] Still, said heating device 100 is provided with connection capacity that can be short-range or long-range, depending on the needs. In fact, said heating device 100 is able to automatically recognize and connect to a mesh network of the other heating devices 100 present. The type of mesh network has a multitude of advantages. It is not the only type of network that can be used and it is actually possible to use any type of network, both wireless and wired, depending on the implementation.

[0065] Finally, one or more heating devices 100 can be controlled through a single interface, on a dedicated device, for example on a computer or smartphone, both locally and remotely.

[0066] Thanks to this system 1, the environment can be heated with the following heating method which includes the following steps: switching on the induction board 20; since there is no air circulation in the heat exchange chamber 140, the core 110 heats quickly up until it reaches a temperature suitable for heating the air, called the first heating temperature; this first heating temperature may depend on the implementations and may be varied by the user and is comprised in the range of 100 - 600°C. switching on the air circulation system 30 when the first heating temperature is reached; switching off the induction board 20 if the temperature of the core 110 exceeds a safety threshold temperature that depends on the implementation, i.e. on the materials with which the heat exchange chamber 140 is made; this measure prevents the core 110 from overheating to temperatures that expose the surrounding environment and the heating device 100 itself to risks of damage or fire.

[0067] Furthermore, the equilibrium temperature of the heating device 100 depends on many factors concerning each specific implementation of the device. These include, by way of non-limiting example: the flow rate of air being pushed through the heat exchange chamber 140; the sizes of the components of the heating device 100 and their characteristics; the power of the induction board 20. the temperature of the air entering the heating device 100.

[0068] The control system 60 is capable of controlling all steps of the method. In particular, said control system 60 activates the induction board 20 if the selected temperature is higher than that of the operating environment.

[0069] When the system 1 is switched on for the first time, it is necessary to set the desired environmental temperature, current date and time. Furthermore, the system is able to locate the heating devices 100 in the environment. If it at least finds one of them, it obtains from this heating device 100 the maximum load available on the reference power network. If it does not find any heating device 100, or if this information is not available, it will ask the user to enter the value in Watts of the maximum available power. Still, the system 1 is able to control the activity of all the heating devices 100 connected to the network, their priority level and their status and the temperature of their reference environment. In particular, if the temperature of said environment is with respect to the others that are present in the other environments the farthest from the given target and in any case lower than the same, the control system 60 activates the induction board 20 and starts heating the core 110. When the core 110 reaches a suitable temperature, between 100 and 600 °C, depending on the implementation, the control system 60 activates the air circulation system 30 and the cooling means 150.

[0070] Periodically the control system 60 receives the data, checks the data received from the sensors and switches the components on or off as required. In case of equal distance from the temperature, account is taken of the priority set for each heating device 100. A heating device 100 is not switched off in the system 1 if the temperature in the environment in which it was switched on has not increased by at least one degree. A heating device 100 is not switched on if the operation thereof is not scheduled for the current date and time. As a safety provision, the induction board 20 is switched off if the temperature of the core 110 exceeds a maximum that depends on the implementation of the device and therefore also on the temperature resistance of the components.

[0071] Furthermore, each heating device 100 can be programmed both from its own display and respective interface, and from any other heating device 100 connected to the same network.

[0072] Furthermore, the system 1 may be provided with an absorption control that checks the functionality of the air circulation system 30.

[0073] The present invention has been described by way of non-limiting illustration according to preferred embodiments thereof, but it is to be understood that variations and / or modifications can be introduced by the person skilled in the art without going outside the relevant scope of protection as defined in the appended claims.

Claims

1. A heating device (100) for heating a flow of cold air (40) and obtaining a flow of hot air (41), said heating device (100) being characterized in that it comprises: a core (110), adapted to produce heat when immersed in a variable magnetic field, a radial heatsink (120), positioned around said core (110) to allow a heat exchange between said core (110) and said flow of cold air (40), an inductor (130), adapted to be traversed by a high-frequency alternating electric current to generate a variable magnetic field, said inductor (130) wrapping said radial heatsink (120) and said core (110), at least one insulating layer (131)for thermally insulating said core (110) from said inductor (130), a heat exchange chamber (140) adapted to contain said inductor (130), said core (110) and said radial heatsink (120), said heat exchange chamber (140) comprising an inlet for said flow of cold air (40) and a mixer (150) comprising an outlet (151) for said flow of hot air (41) surrounded by a plurality of openings (152) for the exit of part of said flow of cold air (40), and cooling means for cooling said inductor (130).

2. The heating device (100) according to the preceding claim, characterized in that each opening (152) of said plurality of openings (152) comprises an inner surface (152') and an outer surface (152"), said outer surface (152") being inclined towards said outlet (151) and having a height greater than the height of said inner surface (152').

3. The heating device (100) according to any one of the preceding claims, characterized in that said cooling means comprises at least one channel for the passage of said flow of cold air (40) to cool said inductor (130), said channel being positioned inside said heat exchange chamber (140).

4. The heating device (100) according to the preceding claim, characterized in that said heat exchange chamber (140) comprises an outer casing (141) and an inner casing (142) positioned inside said outer casing (141) to form said channel.

5. The heating device (100) according to any one of the preceding claims, characterized in that said core (110) is made of iron and said inductor (130) is made of copper or gold.

6. The heating device (100) according to any one of the preceding claims, characterized in that said insulating layer (131) is a support (131) of said inductor (130).

7. A system (1) for heating an environment, said system (1) comprising: at least one heating device (100) according to any one of claims 1-6, at least one supply device (10) for supplying each component of said system (1), an induction board (20) adapted to generate a high-frequency alternating current, electrically connected to said inductor (130) of said heating device (100), a control system (60) adapted to control said at least one heating device (100).

8. The system (1) according to the preceding claim, characterized in that it comprises an air circulation system (30) for circulating said flow of cold air (40) inside said heat exchange chamber (140) and said flow of hot air (41) from said heat exchange chamber (140) to said environment.

9. The system (1) according to the preceding claim, characterized in that said air circulation system (30) comprises a fan and an actuator (70).

10. The system (1) according to any one of claims 7-9, characterized in that said control system (60) comprises at least one sensor (80) adapted to measure the temperature of said core (110) and / or the temperature of said environment.

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