WO2018229448A1

WO2018229448A1 - Method for fungicide and/or insecticide treatment of an element contained in an enclosure and device for implementing same

Info

Publication number: WO2018229448A1
Application number: PCT/FR2018/051424
Authority: WO
Inventors: David VOLFART
Original assignee: Volfart David
Priority date: 2017-06-16
Filing date: 2018-06-15
Publication date: 2018-12-20

Abstract

The present invention concerns a method for fungicide and/or insecticide treatment of at least one element contained in at least one enclosure (1), wherein said enclosure (1) is hermetically sealed and subjected to a heat treatment by means of an airflow, heated by heating means such that the core of said element is taken to a temperature between at least 50°C and 55°C for at least 1 hour to 16 hours, characterised in that the airflow is circulated along a closed circuit comprising a blowing section extending between said heating means and said enclosure (1) and an extraction section extending between said enclosure (1) and said heating means. The invention also concerns a device for implementing such a method.

Description

Method for the fungicidal and / or insecticidal treatment of an element contained in an enclosure and device for implementing it

The subject of the present invention is a process for the fungicidal and / or insecticidal treatment of at least one element contained in at least one enclosure in which said enclosure is hermetically isolated and subjected to heat treatment by means of a flow. air, heated by heating means such that the court of said element is brought to a temperature between at least 50 ° C and 55 ° C for at least 1h to 16h. The invention also relates to a device for implementing such a device.

The present invention relates more specifically to the field of the building and is intended for the curative treatment, and if necessary preventive, buildings or parts of buildings risking damage due to the presence of fungi, such as in particular the merule, or d insects in the lumber and / or masonry.

Typically, the techniques employed for this purpose include subjecting the infested areas to a flow of air heated to a temperature permitting the destruction of living organisms present, in accordance with the FD CEN / TR 15003 standard. it is a cure against the merule, which recommends that the building elements concerned be given a flow of hot air allowing them to reach a temperature of 50 ° C for at least 16 hours.

In practice, however, it has been observed that the techniques currently used by specialized firms do not always give satisfaction. Thus, in some cases, difficulties in achieving and maintaining the recommended temperatures have been observed, which in particular prohibits the treatment of masonry buried or located less than 1.20 m from the ground and does not always guarantee the eradication of spores. any fungi detected. In addition, the devices used are complex, invasive, particularly energy intensive and generally involve very high implementation costs. Moreover, in some cases, their implementation can lead to a dispersion in the nature of spores of merule and therefore to a spread in the environment may lead to possible contamination of healthy parts of a building or neighboring buildings. Also, problems such as the collapse of ceilings following detachment of plaster from its support, related to an uncontrolled evolution of the relative humidity of the air in the treated areas have been reported.

Therefore, the object of the present invention is to propose a fungicidal and / or insecticidal treatment method of an element contained in an enclosure, which complies with said FD CBN / TR 15003 standard, while being more efficient than the processes classically applied, thanks to improved treatment efficiency, through a simplified device and to avoid all of the disadvantages mentioned above for a more affordable cost.

For this purpose, the subject of the invention is a method of the type indicated in the preamble, characterized in that the flow of air is circulated along a closed circuit comprising an insufflation section extending between said means heater and said enclosure and an extraction section extending between said enclosure and said heating means.

According to a specific feature of the invention, said enclosure is subjected to a flow of air, heated by heating means in such a way that the court of said element is heated to a temperature of at least 50 ° C. for 16 hours and / or that the environment of said element is brought to a temperature of at least 80 ° C for at least 10 h.

The method according to the invention is also characterized in that the heat treatment is carried out by continuously monitoring the temperature at the ccnir of said element and / or the temperature within said enclosure.

Where appropriate, it is also intended to measure the relative humidity of the element to be treated or the air contained in said chamber, before energetic treatment of the hot air treatment, then, during the implementation of the hot air insufflation treatment, continuous measurement of the relative humidity of the air contained in said enclosure and / or said element, and if necessary, adjust it following the Keylwerth diagram.

In order to increase the relative humidity of the air contained in said enclosure, the present method provides, according to the case, to inject water by misting and / or nebulization, or to introduce external air into the flow of air circulating in the closed circuit.

In order to lower the relative humidity of the air contained in said enclosure, the present method provides, as the case may be, to direct the flow of air through a condenser coupled to an evaporator, the refrigerant of which is cooled, if necessary, by an air / water heat pump, or to introduce external air into the flow of air circulating in the closed circuit.

Advantageously, in order to overcome unwanted fire starts, the method according to the invention also provides for continuous monitoring of the CO2 content contained in said enclosure.

In addition, in order to complete the heat treatment applied to the treated element for curative purposes, the present method provides the possibility of performing in parallel a chemical treatment of this element by introducing a biocidal product into the air contained in the enclosure and / or by injecting CO2 into the air contained in said enclosure.

According to other features, the invention further provides that prior to said heat treatment, airtight isolation of the enclosure is carried out, while subsequent to said heat treatment detoxification of said enclosure is carried out.

The method according to the invention also provides the possibility of treating concomitantly several enclosures by applying to each of them the same or different treatment. The invention also relates to a device for implementing the method as set forth above, comprising means for heating a flow of air capable of being connected, by means of at least one insufflation sheath. of the air flow, to a thermally insulated enclosure containing an element to be treated, means for directing said air flow through said insufflation sheath to said enclosure, characterized in that it comprises at least one sheath of extraction of the air flow capable of connecting said enclosure to said heating means.

Advantageously, the device according to the invention comprises means for continuously monitoring the temperature at the core of said element and / or the temperature within said enclosure adapted to be installed in said enclosure or cerar said element.

According to another characteristic, the present device comprises means for continuously monitoring and adjusting the relative humidity of the air contained in said enclosure, or in the element to be treated, intended to be installed in said enclosure.

According to an alternative embodiment, the continuous adjustment means of the relative humidity of the air contained in said enclosure comprise a set formed of a condenser coupled to an evaporator that can be cooled by ventilation means and / or an air / water heat pump, said assembly being placed on the insufflation duct of the air flow in said enclosure or on the extraction duct of the air flow of said enclosure.

In addition, the means for continuously adjusting the relative humidity of the air contained in said enclosure also comprise misting means and / or water nebulization means adapted to be installed in said enclosure and connected to a water supply.

According to another characteristic, the continuous adjustment means of the relative humidity of the air contained in said enclosure comprise an external air inlet opening into the extraction duct. Also, the device according to the invention is characterized in that it comprises one or more motor fans intended to be installed within said enclosure.

According to the invention, it may further comprise means for misting and / or nebulizing biocidal products intended to be installed in said enclosure.

The present invention will be better understood on reading the description given with reference to the appended figures illustrating schematic views of an exemplary embodiment of the device according to the invention applied to the treatment of an enclosure, in which:

- Figures 1 and 2 show the constituent elements of said device according to two different states, wherein the fogging means are respectively active and inactive.

With reference to the figures, the subject of the present invention is a process for the fungicidal and / or insecticidal treatment of an element, such as for example a wooden beam, or a masonry element, contained in an enclosure 1 made hermetic to the air, by means of a flow of hot air supplemented, where appropriate by at least one chemical treatment.

According to the invention, this method is implemented through a device which is composed, in the variant embodiment illustrated, of a fan 2 of the centrifugal type, making it possible to create a flow of air flowing in the direction indicated by the arrows F in the figures, through a heater 3 which it is integral, to the chamber 1 via a blowing tube 9, to return, after passing through the chamber 1, to the heating 3 via a sheath extraction 4 and the fan 2.

The latter is preferably of the type allowing a flow rate between 10000m3 / h and 36000m3 / h, medium or high pressure. Preferably, it is variable speed, which allows to regulate the suction air flow or insufflation and the pressure exerted within the chamber 1.

The suction duct 4, of heat-resistant type, connects the enclosure 1 to the fan 2, by means of a connection 5 in "Y". The latter is equipped with a register 6 for adjusting the air intake flow rate from said chamber 1, as well as a register 7 for adjusting the opening and closing of an inlet mouth 8. outside air.

The insufflation sheath 9, also of the heat-resistant type, connects the heater 3 to the enclosure 1. As illustrated in the figures, it is connected to the heater 3 by means of a "Y" connector 10 equipped with a register lia adjustable opening and closing, manually or automatically, and controlling the air blowing rate in the chamber 1, and a register 12 for opening or closing the setting free air (insufflation of the internal air towards the external environment). It should be noted that the flaps of the four registers 6, 7, 11a, 12 are adjustable in opening and closing manually or automatically.

Such a structure, in which the device according to the invention comprises an insufflation sheath 9 for an extraction sheath 4, is advantageous because it makes it possible to avoid any phenomenon related to an inadvertent air overpressure within the enclosure 1. This has the consequence not only of facilitating the inevitable preparatory work intended to make the enclosure 1 airtight, but also of allowing, in case of concomitant treatment of several enclosures 1, the implementation of the process of independently in each of them.

According to the invention, the heater 3 is preferably mobile, of suitable power, for example between 100 and 1500 kW, supplied autonomously by a fuel such as gas, fuel oil or the electrical network. Advantageously, the heater 3 is further selected in such a way that it is adapted to operate without interruption until temperatures of the order of 200 ° C. For this purpose, it is equipped with adjustable safety thermostats from 0 to 200 ° C that manage its commissioning or shutdown, taking into account the temperature that resides in it, and the flow of air passing through it. In addition, the heater 3 is controlled by a remote thermostat, defined by at least one temperature sensor placed in the enclosure 1 or within the element to be treated contained in the chamber 1, and which provides information on the temperature reached within the chamber 1 or in the heart of the element to be treated.

Moreover, temperature sensors (not shown) placed at the inlet and outlet of the fan 2, and which can be connected to a computer, are provided to manage the opening or closing of the insufflation or suction gaggles 4 through registers 6, 11a, as well as the setting in function of the regulation means of the relative humidity of the air contained in said chamber 1, which will be described below.

Also, probes for measuring the relative humidity in the air of the enclosure 1 and / or in the heart of the element to be treated are intended to be placed in said enclosure 1. These probes also make it possible to control the means of regulating the relative humidity of the air contained in said enclosure 1, which will be described below.

As illustrated in the figures, in the embodiment variant described, the device according to the invention also comprises a plurality of water misters 13 placed in the chamber 1 and making it possible, where appropriate, to regulate the relative humidity therein. . The foggers 13 are connected to a water inlet 14, connected to the network of running water or when this is not possible to a tank 16 provided with a pump. They are controlled from the outside by manual or motorized valves. These valves 15 can be controlled by opening / closing by a computer.

It should be noted that, where appropriate, the atomizers 13 may be used to inject a biocidal product inside the chamber 1, with a view to carrying out fungicidal and / or insecticidal and / or more generally biocidal treatment therein. They are then connected to cuva 16 containing, in place of water, a biocidal product which may be defined for example by a fungicide, an insecticide or an algicide, or any equivalent product. For the same purpose, the enclosure 1 may be equipped with a plurality of nebulizers (not shown) operating either using CO 2 or liquid air in a high-pressure bottle. Alternatively, the biocidal product could it can also be injected under pressure by means of an injector, such as a fogger, or by an atomizer such as an additional nebulizer placed downstream of the fan 2.

The device according to the invention further comprises a dehumidification circuit equipped with a condenser 17 placed on the insufflation sheath 9 then provided with a register 11b for directing the flow of air towards the condenser 17. Another register 18 opening and closing is placed upstream of the condenser 17 to allow a regulation of the air flow within the latter. When it is motorized, the register 18 can be managed in a computer manner by means of temperature and / or humidity sensors that comprise the device according to the invention. The dehumidification circuit also comprises an evaporator 19 connected to the condenser 17 via a water circuit 21 passing through a water buffer tank 22. The evaporator 19 allows the condenser 17 to be always at a temperature below the dew point. In the illustrated embodiment, the evaporator 19 is completed with an air / water heat pump 20 enabling the dew point to be reached in all circumstances.

It should be noted that the device according to the invention is preferably connected to a computer (not illustrated) equipped with computer means for controlling all the registers 6, 7, 11a, 11b, 12, 18, as well as the set of probes for temperature and relative humidity.

These computer means integrate the Keylwerth diagram allowing them to control the regulation of the temperature and the relative humidity of the air as a function of the humidity levels measured in the chamber 1 or in the element to be treated. Depending on the needs, the computer is thus provided capable of controlling the method according to the invention throughout its implementation. More precisely, the computer is programmed to control in particular:

the flow rate of the fan 2 through a variation of its rotation speed,

the heating power by controlling the remote thermostat as well as the internal thermostatic probes contained in the heater 2, the registers 6, 7, 11a, 11b, 12, 18 (in extraction and insufflation)

the commissioning of the condenser 17, the cooling circuit pump, the evaporator 19 as well as possibly the air / water heat pump 20,

the commissioning of the biocide foggers, in an area or several zones to be treated, by controlling the start of operation of the pump coupled to the tank 16 as well as the opening / closing solenoid valves;

The activation of one or more foggers and / or, where appropriate, water nebulizers in the chamber 1.

The implementation of the method according to the invention supposes a preparation of the preliminary chamber 1 during which it is made airtight.

When the enclosure 1 is defined by a part of a building, it is intended for this purpose to cover the facades of the latter with a thermal lock placed at least 0.50m from the walls, and made by a double against lathing a double plastic film, creating a thermally insulating barrier thanks to the three air blades trapped between the double plastic film and between the hermetic lock and the external environment.

Preferably, the thermal lock is affixed against the facades independently of any invasive drilling. Furthermore, any external openings are thermally insulated and hermetically sealed by a frame made of extruded polystyrene on which a polyane film is affixed. The insulation between the insulating frame and the masonry is made by means of glass wool or an equivalent insulating material to match the irregularities of the masonry.

When the doors are made of plastic material, a frame is affixed to the outside and inside so as to thermally protect the potentially sensitive opening at high temperatures.

Insulation of the roof is also suitably made, for example by a double batting against a film double plastic such as the one used to realize the insulation of the facades.

Similarly, the enclosure 1 is separated from the rest of the building by the use of insulating partitions of the same type as those used for external openings.

During the actual implementation of the process according to the invention, the enclosure 1 is equipped with the insufflation and extraction ducts 9. It is ensured that the extraction air flow rates and the insufflation are in equilibrium so that the chamber 1 is neither under pressure nor under pressure relative to the external environment for the duration of the treatment.

A mixing of the air flowing in the chamber 1 is preferably carried out using motor fans operating continuously.

According to the figures, during the start of the hot air treatment, the air flow created by the fan 2 is heated by the heater 3 and is introduced into the chamber 1 via the insufflation duct 9. The registers 6 , 11a, 11b are open allowing circulation of the air flow in a closed loop between the enclosure 1 and the heater 3 through the fan 2. The set of means for regulating the relative humidity within the enclosure , namely the foggers 13, the condenser 17, the external air inlet 8 are deactivated or closed, as long as the relative humidity sensors are values that the computer means that is equipped with the device computer consider complying with the Keylwerth diagram or the solicited or open opposites when the values no longer conform.

As soon as the temperature of the air flow reaches the desired value, a plateau is maintained for a predetermined time sufficient to destroy the previously identified lignivorous organisms. As indicated above, during the process, the relative humidity of the air is regulated by the computer means either by starting the foggers 13 (Figure 1) and / or nebulizers diffusing water into the water. atmosphere of the enclosure 1, either through the external air inlet via the mouth 8 in the extraction duct 4, either by starting the condenser 17, or again by regulating the temperature of the air flow by acting on the heater 3.

In other words, the device according to the invention allows regulation of the relative humidity of the air continuously throughout the misa intoxicates of the corresponding process.

Thus, during the warm-up phase, the misting machines 13 and / or the water nebulizers are generally off and the device ensures that the values recorded via the humidity control probes in the air comply with to the Keylwerth diagram.

In the plateau phase (remember that it is imperative to obtain 50 ° C for 16h for the mycelium of merule, 80 ° C at room temperature for the spores of the merule, 60 ° c for 2 hours for xylophagous insects, 55 ° C for 4 hours for termites as an example), the foggers 13 and / or nebulizers are activated or the condenser 17 and 1 'evaporator 19 triggered.

Then, during the descending temperature phase, the dehumidification circuit comprising the condenser 17 and the evaporator 19 can take over the water misters 13 and / or the possible water nebulizers (FIG 2). The condenser 17, the evaporator 19 and the cooling water circulation pump are then operated so that the condenser 17 is always at a temperature below that of the dew point of the air contained in the condenser. enclosure 1.

When the evaporator 19 is no longer sufficient to obtain a temperature below the dew point, the air / water heat pump 20 is triggered and ensures the dehumidification.

Thanks to such a characteristic, the timber is thus preserved from any deformation or inadvertent cracking due to the high temperatures to which they are subjected in the curative treatments.

Also, by regulating the relative humidity of the air, any possible wood shrinkage phenomenon may in particular cause, in ceilings on wood lath, the recess of the Plaster of lattice in bowls is totally avoided. The staffs on wood as well as the floors are also preserved during the implementation of the method according to the invention.

In addition, the method provides that the relative humidity of the air is regulated so as to never exceed 95%, which makes it possible to avoid any inflation of the plasters which are thus preserved during the implementation of the process according to the invention. 'invention.

In order to complete the hot air treatment according to the present method, which has only a curative purpose, by a preventive treatment, the invention provides that a chemical treatment step can be carried out.

Thus, once the heating process is complete, the device according to the invention can be used to inject into the chamber 1, through the foggers 13 or nebulizers biocidal products, insecticides, fungicides, or others.

The materials contained in the enclosure 1 having been rendered anhydrous by the heat undergone will then very strongly absorb the injected product, the action of which will then be reinforced while avoiding for the operator the risks associated with uncontrolled sprays of toxic chemical.

Indeed, during the implementation of the chemical treatment, performed after switching off the heater 2, the invention provides, in a variant, that the register 6 of the extraction duct 4 is closed, while the register 7 of the 8 mouth of external air inlet is open.

The external air can then pass through the fan 2 and arrives via the blowing duct 9 at high or medium pressure in the chamber 1 in which the foggers 13 are turned on to inject chemical treatment products. . The pressure generated by the fan 2 in the chamber 1 is such that the micro-droplets suspended in the air are then pushed against all the materials or elements contained in the chamber 1. The phenomenon allows a dissemination in the every corner of the enclosure 1, the air laden with chemical spreading everywhere. Optionally, the method according to the invention may also comprise a step of insufflation of CO2 to complete the heat treatment and implemented in such a way that it does not involve any risk for the user.

In fact, this step can be done in two different ways. Either using pressurized CO2 gas as a nebulizer gas in combination with the nebulization of a biocide, or by using the positive pressure to inject CO2 into the chamber 1. For this purpose, the opening register 7 on the outside of the extraction duct 4 is open, the external air which is introduced into the latter passes through the fan 2, while a CO2 insufflator (not shown) makes the CO2 gas enter the circuit insufflation by which it is transported to the enclosure 1.

Once the CO 2 content has been obtained, the method provides for the implementation of a detoxification circuit by opening the register 12 of the insufflation sheath and closing the register 11a. The CO 2 is then discharged to the external medium before penetration into the chamber 1 by an operator.

It should be noted that the insufflation of C02 allows an almost immediate extinction by smothering a start of fire that could occur inadvertently during the heat treatment.

The process according to the invention has many advantages. In particular, the circulation of the air flow in a closed loop makes it possible to achieve, within the chamber 1, much higher temperatures than through conventional methods. This makes it possible to improve the effectiveness of the treatment and in particular to guarantee the elimination of the spores of any fungi, including those of the merule. Furthermore, the desired temperatures are reached much faster both within the chamber 1 and the heart of the infested element to be treated, which allows a quite substantial energy saving and the processing of large volumes . In most cases, the implementation of a single device according to the invention makes it possible to achieve the expected results in the situations in which until now, several heaters conventionally used in hot air treatments were necessary.

Furthermore, it has been observed that the possibility of reaching temperatures of the order of 80 ° C. for at least 10 h in a row makes it possible to treat masonry elements or buried timber, which is very advantageous. especially in infestations by the merule.

Also, any dissemination of possible fungus spores in the near environment is excluded, since the flow of air flows through a hermetically closed circuit and at zero pressure. In addition, the spores suspended in the air flow passing through the chamber 1 are extracted from the latter and are destroyed during their passage through the heater 3 where temperatures of around 150 ° C to 200 ° C. prevail.

If necessary, a detoxification step of the chamber 1 can be performed after the heating step in order to evacuate any volatile particles contained in the glues and solvents of certain building materials and which would have been released under the effect of high temperatures. The detoxification circuit evoked in the context of the CO 2 insufflation is then used for this purpose.

Moreover, the device according to the invention is mobile and adaptable to any type of enclosure 1 that can be defined for example by a building with several areas to be treated or a box forming a single area to be treated. Thanks to the use of a medium or high pressure fan 2, the extraction ducts 4 and the insufflation ducts 9 may be of a length of several tens of meters, thus favoring the diffusion of heat over a long distance. When several enclosures 1 are treated concomitantly, the method thus allows a distribution of heat to meet the requirements related to the conformation of the building.

When the volumes are very large, several heaters 3 and / or fans 2 can be controlled by the same computer means. The invention is further adapted to the restoration of furniture or works of art, any premises that can be converted into a single enclosure 1 treatment. It suffices to insulate the outer and inner openings thermally and hermetically.

Also the invention can be applied to the drying of wood, for example heating or work before use avoiding cracks and deformations that can make the wood unfit for sale.

Treatments against harmful insects, such as bed bugs for example, can be considered regardless of any alteration of the wood.

Claims

1. Fungicidal and / or insecticidal treatment method of at least one element contained in at least one enclosure (1) in which said enclosure (1) is hermetically sealed and subjected to heat treatment, by means of a flow of air, heated by heating means in such a way that the core of said element is brought to a temperature of between at least 50 ° C. and 55 ° C. for at least 1 h to 16 h, characterized in that the air flow along a closed circuit comprising an insufflation section extending between said heating means and said enclosure (1) and an extraction section extending between said enclosure (1) and said means for heater.

2. Method according to claim 1, characterized in that said enclosure (1) is subjected to an air flow, heated by heating means (3) so that the core of said element is brought to a temperature at least 50 ° C for 16h and / or the environment of said element is heated to a temperature of at least 80 ° C for at least 10 h.

3. Method according to any one of claims 1 or 2, characterized in that continuously controls the temperature in the heart of said element and / or the temperature within said enclosure (1).

4. Method according to any one of the preceding claims, characterized in that continuously measuring the relative humidity of the air contained in said enclosure (1) and / or said element and, where appropriate, it is adjusts by following the Keylwerth diagram.

5. Method according to claim 4, characterized in that to increase the relative humidity of the air contained in said enclosure (1) is injected water by misting and / or nebulization.

6. Method according to claim 4, characterized in that for lowering the relative humidity of the air contained in said enclosure (1), said flow of air is directed through a condenser (17) coupled to an evaporator (19). and / or an air / water heat stern (20).

7. Method according to claim 4, characterized in that for increasing or lowering the relative humidity of the air contained in said enclosure (1), external air is introduced into said flow of air circulating in the closed circuit. .

8. Method according to any one of the preceding claims, characterized in that continuously monitors the rate of CO2 contained in said enclosure (1).

9. Method according to any one of the preceding claims, characterized in that in addition to the heat treatment, a chemical treatment of said element is carried out by introducing a biocidal product into the air contained in said chamber (1) and / or introducing CO 2 into the air contained in said enclosure (1) by injection.

10. Method according to any one of the preceding claims, characterized in that in addition to the heat treatment, detoxification of said enclosure (1) at the end of heat treatment.

11. Method according to any one of the preceding claims, characterized in that prior to said heat treatment, airtight isolation of the enclosure (1) is carried out.

12. Method according to any one of the preceding claims, characterized in that it is treated concomitantly several enclosures (1) by applying to each of them the same or different treatment.

13. Device for implementing the method according to any one of claims 1 to 12, comprising means for heating a flow of air capable of being connected, by means of at least one insufflation jacket (9) of the air flow, with a hermetic enclosure (1) containing an element to be treated, means for directing said flow of air through said insufflation tube ( 9) to said enclosure (1), characterized in that it comprises at least one extraction duct (4) of the air flow adapted to connect said enclosure (1) to said heating means.

14. Device according to claim 13, characterized in that it comprises means for continuously monitoring the temperature in the heart of said element and / or the temperature within said enclosure (1).

15. Device according to any one of claims 13 or 14, characterized in that it comprises means for continuously adjusting the relative humidity of the air contained in said enclosure (1).

16. Device according to claim 15, characterized in that the means for continuously adjusting the relative humidity of the air contained in said enclosure (1) comprise means for continuously monitoring the relative humidity rate in the yard the element and / or the relative humidity of the air within said enclosure (1).

17. Device according to any one of claims 15 or 16, characterized in that the continuously adjusting means of the relative humidity of the air contained in said enclosure (1) comprises a set of a condenser ( 17) coupled to an evaporator (19) and / or an air / water heat pump (20), said assembly being placed on the insufflation jacket (9) of the air flow in said enclosure (1) or on the extraction duct (4) of the air flow of said enclosure (1).

18. Device according to claim 15, characterized in that the continuous adjustment means of the relative humidity of the air contained in said enclosure (1) comprise misting means (13) and / or water nebulization means adapted to be installed in said enclosure (1) and connected to a water supply.

19. Device according to any one of claims 13 to 18, characterized in that it comprises one or more motor fans intended to be installed within said enclosure (1).

20. Device according to any one of claims 13 to 19, characterized in that it comprises means for misting and / or nebulizing biocidal products to be installed in said enclosure (1).