WO2024209238A1

WO2024209238A1 - System and method for the disinfection of objects using ozone

Info

Publication number: WO2024209238A1
Application number: PCT/IB2023/053494
Authority: WO
Inventors: Annesi Gisela GIACAMAN FONSECA; Fernando Patricio SARCE THOMANN
Original assignee: Bioaera Austral Spa
Priority date: 2023-04-05
Filing date: 2023-04-05
Publication date: 2024-10-10

Abstract

The invention relates to apparatus and devices for the disinfection of objects by means of ozone generation. Particularly, the invention consists of a system and a method for the disinfection of objects using ozone that allows effectively destroying microorganisms and allows complete removal of residual ozone emissions into the environment.

Description

SYSTEM AND METHOD FOR THE DISINFECTION OF OBJECTS USING OZONE

FIELD OF APPLICATION

The invention relates to apparatus and devices for the disinfection of objects by means of ozone generation. Particularly, the invention consists of a system and method for the disinfection of objects using ozone that allows effectively destroying microorganisms and allows complete removal of residual ozone emissions into the environment.

BACKGROUND

Infectious diseases have shown great potential for dissemination in recent years, showing the ability to saturate national resources by pushing the capacity of emergency rooms to the limit and causing large-scale epidemic emergencies.

Infectious diseases can be transmitted in different ways, either by direct contact, through food, air or water, and viruses and bacteria can be impregnated on clothes, objects and surfaces. For this reason, it is essential to ensure people the possibility of functioning in a safe environment, for example, in a work environment, avoiding workers to be transmitters of diseases that put their own health at risk and those who surround them.

There are a variety of alternatives on the market that claim to be effective in combating viruses and bacteria. However, many of these solutions are based on traditional disinfection methods, which are not suitable for all types of materials and, in some cases, are not effective for killing microorganisms. This is why the development of fast, sustainable and efficient disinfection technologies arises as a necessity to reduce the probability of contagion of the population against various pathogens and microorganisms. In this sense, the use of ozone as a disinfectant agent has proven to be highly effective, given its ability to destroy viruses, bacteria, fungi and a wide spectrum of microorganisms.

An example of the above is described in patent document EP 2,273,004 A1 , which discloses a system and method for cleaning clothes comprising a container for containing clothes to be cleaned, means for generating ozone from air, means for bringing the generated ozone into contact with the clothes in the container for allowing the ozone to react with impurities in the clothes, and means for neutralizing the ozone, after its use in the cleaning process. The means for neutralizing the generated ozone comprises a catalytic device that includes ozone neutralizing grains, such as manganese oxide or absorbent carbon.

Another representative technology of the existing solutions in the state of the art is described in document DE 202006013667 U1 , which describes an ozonation box for hatching eggs, comprising a box to house eggs and a pipe system made of ozone resistant materials. At the bottom of the ozonation box there is a set of nozzles for the ozone inlet and in the ceiling there are holes for the ozone outlet. The residual gas is passed through pipes to a catalyst, where the ozone from the ozonation box is converted into oxygen.

Although the previous documents seek to provide technologies for the disinfection of objects, they show basic systems for the treatment of the residual ozone generated after the disinfection process. More particularly, in both cases there are discharge pipes dragging the air with residual ozone towards a catalyst device, to then release the resulting flow into the atmosphere, based on the use of conventional catalyst systems of the state of the art.

However, the conventional catalysts of the state of the art do not allow to remove all of the ozone particles in the flow, since they are designed for operating conditions that allow the release of a residual amount of ozone into the surrounding environment, the amount of which is regulated by specific regulations (in Chile, the Primary Air Quality Standard for Ozone establishes a value of 61 ppbv (120 ug/m³N) for 8 hours of exposure). But ozone is highly toxic and puts people's health at risk, so the release of ozone into the surrounding environment, even in small quantities, constitutes a high risk for people.

Therefore, it can be seen that in the state of the art there is a need for systems allowing efficient disinfection of articles and devices, while also allowing complete removal of residual ozone emissions.

BRIEF DESCRIPTION OF THE INVENTION

To overcome the problems mentioned above, a system for the disinfection of objects using ozone is disclosed, that allows effectively destroying microorganisms and allows the complete removal of residual ozone emissions into the environment. The system comprises:

- a hermetic chamber configured to carry out a process of disinfection of objects inside;

- an ozone generation unit that extracts air from the environment and processes the air to generate a stream of air and ozone, which is configured to supply said stream towards the hermetic chamber to carry out the disinfection process;

- a recirculation unit configured to extract the gas inside the hermetic chamber, after finishing the disinfection process, and which is configured to carry out a flow conditioning and recirculation process, recirculating the gas through its interior and the hermetic chamber, to partially remove the ozone from the stream;

- a catalyst unit configured to further process the stream recirculated by the recirculation unit in order to completely remove the residual ozone; - a control unit that controls the operation of all the units and the gas distribution through them, in order to carry out different operation modes related to the disinfection process.

In some embodiments of the invention, the operation modes include the possibility of combining the operation of the recirculation unit and the catalyst unit, or alternatively the system can operate in operation modes that use only the catalyst process. In both cases, these operation modes are carried out by means of the control unit, which includes means to control flows and operating times. Preferably, the means for controlling flows and operating times can include ozone concentration sensors, temperature sensors, electromagnetic locking systems, valves for opening and closing conduits communicating the units, and pressurization means that allow the generation of the flow of air or gas in the system. In addition, both the recirculation unit and the catalyst unit include heat generation means, which allow the temperature of the flow to be raised in a controlled manner, according to the operating modes, during the conditioning and recirculation process of the flow and the removal of the residual ozone.

In this way, the described system provides the user with the possibility of choosing different operating modes associated with different disinfection possibilities, controlling the concentration of ozone in the hermetic chamber and the processing times. Thus, the system can allow, for example, the elimination of most of the pathogens to which a person is commonly exposed, the elimination of clinically relevant microorganisms, or the elimination of odors. More particularly, the described system can be configured in different operation modes that are associated with different cleaning processes, such as sanitization, disinfection and sterilization, by controlling the operation of the different units, so as to control the concentration of ozone in the hermetic chamber and the exposure time of the objects to the gas.

On the other hand, although in the state of the art it is possible to find disinfection systems that are based on the use of ozone, in these systems the residual ozone treatment is based on the use of conventional catalyst devices, to then release the resulting gas into the atmosphere. In these cases, after the flow of gas has passed through the catalyst devices, the residual flow that is released into the environment still contains an ozone concentration allowed by local regulations (in Chile, a value of 61 ppbv (120 ug) is established. /m3N) for 8 hours of exposure), which, although it is a small amount that meets regulatory requirements, still constitutes a threat to people in the surrounding environment, due to the high toxicity of this component. The invention solves the previously mentioned problems by providing a disinfection process that is carried out inside a hermetic chamber and that is able to remove all the residual ozone after the disinfection process. Ozone removal is carried out by means of the combined action of the catalyst unit and the recirculation unit, where the latter carries out a conditioning process on the gas from the disinfection process. The use of a recirculation unit allows the gas to be pre-processed before using the catalyst unit, in order to achieve optimal processing of the gas before it is released into the environment. For this purpose, the recirculation unit includes heat generation means that allow to increase the temperature of the flow during the recirculation process, which considerably affects the percentage of decomposition of ozone particles present in the flow. Thus, the system allows to control the temperature of the gas flow and its residence time in the recirculation process. In this way, the flow of gas with ozone content from the disinfection process is conditioned, being recirculated for a determined amount of time and at a determined temperature through the recirculation unit. After this process, the gas flow is directed to the catalyst unit, where it is processed again, to completely remove the residual ozone in the chamber.

The invention also contemplates the implementation of a method for the disinfection of objects using ozone that allows effectively destroying microorganisms and allows the complete removal of residual ozone emissions into the environment. The method comprises the steps of:

- extracting an air stream from the environment, processing the air stream to generate different levels of ozone concentration by means of an ozone generation unit, and supplying the stream with ozone into a hermetic chamber to carry out a process of disinfection of objects;

- activating a recirculation unit that extracts the gas content inside the hermetic chamber, after finishing the disinfection process, and that carries out a flow conditioning and recirculation process, recirculating the flow through its interior and the hermetic chamber, partially removing the ozone content in the stream;

- activating a catalyst unit that further processes the stream recirculated by the recirculation unit, eliminating the residual ozone content; and

- enabling the opening of the hermetic chamber for the removal of disinfected objects, also allowing the discharge of the stream processed by the catalyst unit outside of the system; wherein a control unit controls the operation of the ozone generation, recirculation and catalyst units, to carry out different operation modes that determine the disinfection of objects and the subsequent removal of the residual ozone content. The system and method described herein allow the destruction of up to 99% of microorganisms from all types of materials and elements. This is due to the fact that the system and method described allow carrying out a controlled disinfection process, where the disinfection time and the ozone concentrations can be manipulated, thus achieving a complete disinfection of the objects. In addition, the described system and method allow carrying out a disinfection process that operates safely for the environment and for the users, by providing an operation that completely eliminates toxic ozone gas emissions into the environment and that carries out a disinfection process in an airtight environment.

BRIEF DESCRIPTION OF THE FIGURES

Figures 1 a, 1 b, 1 c, and 1d show rear, side, bottom and plan views, respectively, of the ozone-based disinfection system.

Figure 2 shows a side elevation view of the recirculation and catalyst units of the ozone-based disinfection system of Figures 1 a, 1 b, 1 c and 1 d.

Figure 3 shows a rear elevation view of the recirculation and catalyst units of the ozone-based disinfection system of Figures 1 a, 1 b, 1 c and 1 d.

DETAILED DESCRIPTION OF THE INVENTION

According to the embodiments of figures 1 a to 1d, the invention consists of a system (100) for the disinfection of objects using ozone that allows effectively destroying microorganisms and allows the complete removal of residual ozone emissions into the environment, which includes:

- a hermetic chamber (1 10) configured to carry out a process of disinfection of objects inside;

- an ozone generation unit (120) that extracts air from the environment and processes the air to generate a stream of air and ozone, which is configured to supply said stream towards the hermetic chamber to carry out the disinfection process;

- a recirculation unit (130) configured to extract the gas inside the hermetic chamber, after finishing the disinfection process, and which is configured to carry out a flow conditioning and recirculation process, recirculating the gas through its interior and the hermetic chamber, to partially remove the ozone from the stream; - a catalyst unit (140) configured to further process the stream recirculated by the recirculation unit in order to completely remove the residual ozone;

- a control unit (not shown in the figures) that controls the operation of all the units and the gas distribution through them, in order to carry out different operation modes related to the disinfection process.

In order to control the operation of the different units of the system, the control unit preferably comprises means to control the stream and operating times, which allow controlling the distribution of air and/or gas inside the units and the operating times of each unit. Preferably, the means to control the stream and operating times can include one or more ozone concentration sensors, electromagnetic locking systems, temperature sensors and valves for selective opening and closing of ducts in the ozone generation unit (120), recirculation unit (130) and catalyst unit (140), and pressurization means in these units that allow the generation of air and/or gas streams inside the system.

In this embodiment, the operation modes include the possibility of controlling the operation times, for example, according to the ozone content detected in the stream, thus controlling different forms of disinfection of objects. Alternatively, the system could operate using a combination of the recirculation and catalyst units, or operate in modes of operation that use only the catalyst unit.

More particularly, the control unit preferably comprises the use of a controller device (not shown in the figures), such as a microcontroller, and electronic components that operatively communicate the controller device with the means to control the stream and operating times. In addition, the control unit can include a user interface that allows a user to control the operation modes of the system, for example, in the form of a touch screen or keypad, which is arranged in an area close to the hermetic chamber.

The hermetic chamber (1 10) comprises an inner space for the disinfection of objects, which preferably includes sensors of temperature, humidity, and ozone concentration. Additionally, the hermetic chamber communicates with the outside by means of a gate (not shown in the figures) for the introduction of objects, which, in even more preferred configurations, can include a handle for opening and a sealing mechanism (electromagnetic locking systems) to ensure the chamber airtightness.

The inner space of the hermetic chamber is preferably made of stainless steel and can be sized according to particular operating requirements. For example, it can comprise a volume that allows small objects such as a kitchen knife to be disinfected, or a suitable size to house a clinical uniform, or one or more personal protection items (PPE), thus granting the system versatility. In alternative embodiments, the system can be configured to disinfect larger spaces or environments, in which case the system comprises the use of one or more ozone generation units (120), one or more recirculation units (130) and one or more catalyst units (140), which communicate between them and operate in a manner substantially equivalent to the embodiments described herein.

As can be seen more clearly in figure 1 c, the ozone generation unit (120) comprises a hermetic container (123) that houses an ozone generating device (121 ) inside. Preferably, the ozone generating device (121 ) has a production rate of 30 g/h and includes quartz tubes with stainless steel electrodes. In addition, the ozone generation unit comprises air pressurization means (122), preferably a fan, which interacts with a first valve (124), preferably a solenoid electrovalve. In this way, the ozone generation unit (120) extracts air from the environment by opening the first valve (124) and activating first air pressurization means (122), whereby the ozone generation unit generates an air flow that passes through the ozone generation device (121 ), thus sending a gas flow containing air and ozone into the hermetic chamber (110). Inside the hermetic chamber (110) there are ozone concentration sensors (not shown in the figures) that operatively communicate with the control unit, which is configured to control the operation of the first valve (124) and the first air pressurization means (122), so as to maintain the generation of ozone until the sensors detect that a desired concentration has been reached. Once the desired concentration of ozone in the hermetic chamber is reached, according to the selected operation mode, the first air pressurization means (122) are deactivated and the first valve (124) is closed to cut off the air inlet.

According to figures 1 a, 1 b, 3 and 4, once the disinfection process inside the hermetic chamber (1 10) has been completed, according to a selected operation mode, the recirculation unit (130) is configured to extract the gas inside the hermetic chamber, in order to carry out a flow conditioning and recirculation process. As can be seen more clearly in figure 3, the recirculation unit comprises inlet and outlet ducts (134, 135) of gas, which are operatively connected to the hermetic chamber (110) in order to generate a closed stream between the hermetic chamber (110) and the recirculation unit (130), generating a stream that extracts gas from the lower part of the hermetic chamber (110) through the inlet duct

(134) and re-injects the gas stream in the upper part of the chamber through the outlet duct

(135).

The gas stream in the recirculation unit (130) is generated by a second pressurization means (133), preferably a fan, and by the opening of a second valve (131 ), preferably a solenoid electrovalve. The interaction of these elements generates an upward stream through the recirculation unit (130), forcing the stream to pass through heat generation means (132) that increases its temperature, preferably in the form of one or more electrical resistances arranged inside the conduit. Even more preferably, the heat generation means (132) comprises a 1000 W PTC-type resistor battery. With this embodiment, the flow of gas containing air and ozone particles is pre-processed, raising its temperature to a predetermined level to partially remove the ozone particles present in the gas stream. The recirculation cycle allows increasing the efficiency of the system by partially eliminating the ozone content, prior to the action of the catalyst unit.

Preferably, inside the recirculation unit there are temperature sensors and ozone concentration sensors (not shown in the figures), which operatively communicate with the control unit. Thus, the control unit is configured to detect when the ozone concentration meets predetermined values to stop the operation of the recirculation unit (130). More particularly, once it is detected that the predetermined ozone concentration has been reached, the control unit is configured to stop the operation of the second pressurization means (133) and close the second valve (131 ).

According to figures 1 d and 3, the catalyst unit (140) is configured to process the gas that has been pre-processed by the recirculation unit (130), in order to completely remove the residual ozone in the gas. To carry out this process, the catalyst unit comprises a second outlet duct (145) and uses the inlet duct (134) of the recirculation unit (130), thus operatively connecting with the hermetic chamber (1 10) in order to generate a closed loop between said chamber and the catalyst unit (140), and generating a stream that extracts gas from the lower part of the hermetic chamber (1 10) through the inlet duct (134) and re-injects the gas in the top of the chamber through the second outlet duct (145).

As can be seen more clearly in figure 3, when the catalyst unit is operating the second valve (131 ) of the recirculation unit (130) remains closed, preventing the passage of gas, while a third valve (144) opens in the catalyst unit (140), preferably a solenoid electrovalve. According to figure 1 d, once the third valve (144) is open, third pressurization means (143) are activated, preferably a fan, so that their interaction generates a horizontal stream through the catalyst unit (140), forcing the stream to pass through second heat generation means (142) that increases its temperature. Preferably, the second heat generation means (142) comprise one or more electrical resistors arranged inside the conduits, and even more preferably, said heat generation means (142) comprise a 500 W PTC-type resistor battery. In addition to the use of heat as a factor for the removal of ozone, the catalyst unit comprises a catalyst device (141 ), configured to decompose the residual ozone in the gas stream. The catalyst device comprises the use of knitted meshes, preferably of copper and mesh number 40, on which a nano-coating of transition metal oxides, preferably nickel oxide, is deposited. However, other types of meshes and materials may be equally possible, within the scope of the invention. The nano-coating is deposited on the mesh in the form of a gel and embedded at constant temperature and stirring. Subsequently, the meshes covered with transition metal oxides are arranged in the form of rolls on second meshes, preferably of copper and mesh number 80, all of which are inserted into tubes, preferably stainless steel.

Preferably, inside the catalyst unit (140) there are ozone concentration sensors (not shown in the figures), which operatively communicate with the control unit. In this embodiment, the control unit is configured to detect ozone concentration, so as to stop the operation of the catalyst unit (140) when a threshold value is reached, for example around 0 ppm. More particularly, once it is detected that the desired ozone concentration has been reached, the control unit is configured to stop the operation of the third pressurization means (143) and closing the third valve (144).

Additionally, in preferred embodiments, during the operation of the catalyst unit the control unit is configured to use the second and third pressurization means (133, 143), as well as the first and second heat generation means (132, 142), in order to optimize the ozone removal process, through the combined action of these elements. However, in other embodiments, the system may not require the use of all these elements, as the use of the third pressurization means (143) and the second heat generation means (142) is sufficient, according to particular operational requirements.

Once the catalyzation process is complete, that is, once it has been detected that the ozone concentration threshold value has been reached inside the system, the control unit stops the operation of the pressurization means (143) and closes the third valve (144), enabling the opening of the hermetic chamber (110).

Preferably, multiple operation modes are provided, which are classified according to the ozone concentration reached in the gas inside the hermetic chamber and the processing time for the disinfection of objects. More particularly, the ozone concentrations used in the different operating modes are in a range from 0 to more than 100 ppm, and the processing time for disinfection of objects is in a range from 30 minutes to more than 4 hours. The invention also includes the implementation of a method for the disinfection of objects using ozone that allows effectively destroying microorganisms and allows the complete removal of residual ozone emissions into the environment. The method comprises the steps of:

- extracting an air flow from the environment, processing the air to generate different concentrations of ozone by means of an ozone generation unit (120), and supplying a stream of air with ozone into a hermetic chamber (1 10) to carry out a process of disinfection of objects;

- activating a recirculation unit (130) that extracts the gas content inside the hermetic chamber, after finishing the disinfection process, and that carries out a flow conditioning and recirculation process, recirculating the flow through its interior and the hermetic chamber, partially removing the ozone content in the stream;

- activating a catalyst unit (140) that further processes the stream recirculated by the recirculation unit, eliminating the residual ozone content; and

- enabling the opening of the hermetic chamber (1 10) for the removal of disinfected objects, also allowing the discharge of the stream processed by the catalyst unit outside of the system; wherein a control unit controls the operation of the ozone generation, recirculation and catalyst units, to carry out different operation modes that determine the disinfection of objects and the subsequent removal of the residual ozone content.

Preferably, the described method comprises a previous step that includes selecting an operation mode, where the selected operation mode determines the ozone concentration in the hermetic chamber during the disinfection process and the time of exposure of the objects inside the hermetic chamber. More particularly, multiple operation modes are provided, which are classified according to the ozone concentration reached in the gas inside the hermetic chamber and the processing time for the disinfection of objects.

The first step of the method, of extracting an air flow and processing it to generate different ozone concentrations, preferably comprises opening the first valve (124) and activating the first air pressurization means (122), which allows to generate a flow of air that passes through the ozone generation device (121 ), to then send a stream of gas containing air and ozone into the hermetic chamber (1 10). Furthermore, this step preferably includes detecting the ozone concentration inside the hermetic chamber (1 10), by means of ozone concentration sensors operatively communicated with the control unit. Once it is detected that the ozone concentration has reached a predetermined value according to the selected operation mode, this step includes stopping the operation of the first pressurizing means (122) and closing the first valve (124).

The step of activating the recirculation unit comprises opening the second valve (131 ) and activating the second pressurization means (133), thus generating an upward stream through the recirculation unit (130) which forces the stream to pass through the heat generation means (132), increasing the temperature of the flow to a predetermined level to partially remove the ozone particles from the flow. Additionally, this step preferably includes detecting temperature conditions and ozone concentration inside the recirculation unit, by means of respective temperature sensors and ozone concentration sensors operatively communicated with the control unit. Once the control unit detects that the ozone concentration reaches a predetermined value, this step includes stopping the operation of the second pressurizing means (133) and closing the second valve (131 ).

The step of activating the catalyst unit includes the opening of the third valve (144) and the activation of the third pressurization means (143), thus generating a closed flow through the catalyst unit (140), the hermetic chamber and part of the recirculation unit (130), and forcing the flow to pass through the catalyst device (141 ), to remove residual ozone particles from the flow. Additionally, this step preferably includes detecting temperature conditions and ozone concentration inside the catalyst unit (140), by means of respective temperature sensors and ozone concentration sensors operatively communicated with the control unit. Once the control unit detects that the ozone concentration reaches a predetermined value, for example around 0 ppm, this step includes stopping the operation of the third pressurization means (143) and closing the third valve (144).

In preferred embodiments of the invention, in the step of activating the catalyst unit, the control unit is configured to use the second and third pressurization means (133, 143), as well as the first and second heat generation means (132, 142), in order to optimize the ozone removal process, through the combined action of these elements. However, in other configurations of the invention, the operation of the system may not require the use of all these elements, as the use of the third pressurization means (143) and the second heat generation means (142) is sufficient under particular operational requirements.

Finally, although the invention has been described mainly for the disinfection of objects in work environments, it is not restricted only to safe environments and can also be used in other applications, such as in the recycling industry. More particularly, it has been found that there are some types of containers (such as potato chip containers) that cannot be properly recycled because the polymers used do not withstand heat disinfection. In addition, as this type of packaging is used in the food industry and is in direct contact with food, the use of chemical agents is not recommended as they can leave highly toxic residues. In this kind of situations, disinfection by means of the embodiments described herein has shown to be highly efficient.

Although various illustrative embodiments are described above, any of a number of changes may be made to various embodiments without departing from the scope of the invention as described by the claims. For example, the order in which various described method steps are performed may often be changed in alternative embodiments, and in other alternative embodiments one or more method steps may be skipped altogether. Optional features of the system embodiments may be included in some embodiments and not in others. Therefore, the foregoing description is provided primarily for exemplary purposes and should not be interpreted to limit the scope of the invention as it is set forth in the claims.

Claims

CLAIMS What is claimed is:

1 . A system (100) for the disinfection of objects using ozone, comprising:

- a recirculation unit (130) configured to extract the gas inside the hermetic chamber, after finishing the disinfection process, and which is configured to carry out a flow conditioning and recirculation process, recirculating the gas through its interior and the hermetic chamber, to partially remove the ozone from the stream;

- a catalyst unit (140) configured to further process the stream recirculated by the recirculation unit in order to completely remove the residual ozone;

- a control unit that controls the operation of all the units and the gas distribution through them, in order to carry out different operation modes related to the disinfection process.

2. A system (100) according to claim 1 , wherein the control unit comprises means to control the stream and operating times, in order to control the distribution of air and/or gas inside the units and the operating times of each unit.

3. A system (100) according to claim 2, wherein the means to control the stream and operating times include one or more ozone concentration sensors, temperature sensors and valves for selective opening and closing of ducts in the ozone generation unit (120), recirculation unit (130) and catalyst unit (140), and pressurization means in these units that allow the generation of air and/or gas streams inside the system.

4. A system (100) according to claim 3, wherein the control unit comprises a microcontroller and electronic components that operatively communicate the microcontroller with the means to control the stream and operating times.

5. A system (100) according to claim 1 , wherein the control unit can include a user interface that allows a user to control the operation modes of the system, which is arranged in an area close to the hermetic chamber.

6. A system (100) according to claim 1 , wherein the hermetic chamber (1 10) comprises an inner space sized according to particular operating requirements, which includes electromagnetic locking systems, sensors of temperature, humidity, and ozone concentration.

7. A system (100) according to claim 1 , wherein the ozone generation unit (120) comprises an ozone generating device (121 ), air pressurization means (122) and a first valve (124), the ozone generation unit extracting air from the environment and generating an air flow that passes through the ozone generation device (121 ), sending a gas flow containing air and ozone into the hermetic chamber (1 10).

8. A system (100) according to claim 7, wherein the ozone generation unit (120) comprises ozone concentration sensors operatively communicated with the control unit, such that the control unit is configured to detect when the ozone concentration meets predetermined values according to a selected operation mode, to stop the operation of the first air pressurization means (122) and close the first valve (124).

9. A system (100) according to claim 1 , wherein the recirculation unit (130) comprises a second pressurization means (133), a second valve (131 ) and inlet and outlet ducts (134, 135) operatively connected to the hermetic chamber (1 10), generating a closed stream between the hermetic chamber (1 10) and the recirculation unit (130) and forcing the stream to pass through heat generation means (132).

10. A system (100) according to claim 9, wherein the recirculation unit comprises temperature sensors and ozone concentration sensors operatively communicated with the control unit, such that the control unit is configured to detect when the ozone concentration meets predetermined values to stop the operation of the recirculation unit (130).

1 1. A system (100) according to claim 1 , wherein the catalyst unit (140) comprises a third valve (144) and a third pressurization means (143) configured to generate a closed stream between the hermetic chamber and the catalyst unit (140), and forcing the stream to pass through a second heat generation means (142) and a catalyst device (141 ).

12. A system (100) according to claim 11 , wherein the catalyst device (141 ) comprises knitted meshes with a nano-coating of transition metal oxides, wherein the nanocoating is deposited on the meshes in the form of a gel and embedded at constant temperature and stirring, and then the meshes covered with transition metal oxides are arranged in the form of rolls on second meshes, which are inserted into tubes.

13. A system (100) according to claim 1 1 , wherein the catalyst unit (140) comprises ozone concentration sensors operatively communicated with the control unit, such that the control unit is configured to detect ozone concentration, so as to stop the operation of the catalyst unit (140) when a threshold value is reached.

14. A system (100) according to claim 1 , further comprising multiple operation modes related to the disinfection process, wherein the operation modes are classified according to the ozone concentration reached in the gas inside the hermetic chamber and the processing time for the disinfection of objects.

15. A method for the disinfection of objects using ozone, comprising the steps of:

16. A method according to claim 15, further comprising a previous step of selecting an operation mode among multiple operation modes, wherein the operation modes are classified according to the ozone concentration reached in the gas inside the hermetic chamber and the processing time for the disinfection of objects.

17. A method according to claim 15, wherein the step of extracting an air flow and processing it to generate different ozone concentrations comprises:

- opening the first valve (124) and activating first air pressurization means (122) to generate a flow of air that passes through an ozone generation device (121 ), and sending a stream of gas containing air and ozone into the hermetic chamber (1 10);

- detecting the ozone concentration inside the hermetic chamber (110), by means of ozone concentration sensors operatively communicated with the control unit; and

- once it is detected that the ozone concentration has reached a predetermined value according to the selected operation mode, stopping the operation of the first pressurizing means (122) and closing the first valve (124).

18. A method according to claim 15, wherein the step of activating the recirculation unit comprises:

- opening a second valve (131 ) and activating second pressurization means (133) to generate a stream through the recirculation unit (130) that forces the stream to pass through heat generation means (132);

- detecting temperature conditions and ozone concentration inside the recirculation unit, by means of respective temperature sensors and ozone concentration sensors operatively communicated with the control unit; and

- once the control unit detects that the ozone concentration reaches a predetermined value, stopping the operation of the second pressurizing means (133) and closing the second valve (131 ).

19. A method according to claim 15, wherein the step of activating the catalyst unit includes: - opening a third valve (144) and activating third pressurization means (143) to generate a closed stream through the catalyst unit (140), the hermetic chamber and part of the recirculation unit (130), and forcing the stream to pass through the catalyst device (141 ), to remove residual ozone particles from the flow;

- detecting temperature conditions and ozone concentration inside the catalyst unit (140), by means of respective temperature sensors and ozone concentration sensors operatively communicated with the control unit; and

- once the control unit detects that the ozone concentration reaches a predetermined value, stopping the operation of the third pressurization means (143) and closing the third valve (144).