WO2022074411A2

WO2022074411A2 - Equipment for disinfecting an enclosed space, such as a room

Info

Publication number: WO2022074411A2
Application number: PCT/HU2021/050060
Authority: WO
Inventors: Béla HORVÁTH
Original assignee: Megaplex Kft.
Priority date: 2020-10-08
Filing date: 2021-11-15
Publication date: 2022-04-14
Also published as: HU5731U; HUP2000330A1; WO2022074411A3

Abstract

The equipment for the ozone disinfection of an enclosed space, such as a room, comprises a single central controller (1 ), an ozone generator (2) and an ozone neutraliser (3) wired to it, and several ozone detector modules (6) connected by wireless radio communications modules (4), fan modules (7), indoor and outdoor motion detector modules (8, 9) installed in the enclosed space and at the transport routes, respectively. The latter also Include a signalling unit emitting an acoustic and/or visual signal when detecting movement. Furthermore, the equipment also comprises a calibration module (11 ) periodically calibrating the ozone detectors applied in the ozone detector modules (6), and a user control unit (12) preferably realised as a smart phone. The equipment not only produces ozone, but also saturates the air with ozone, killing all pathogens adhering to any surface, not only those present in the air, and it minimises contact between the disinfectant and humans.

Description

Equipment for disinfecting an enclosed space, such as a room

The invention relates to an equipment for disinfecting an enclosed space, such as a room, comprising an ozone generator, a controller unit in a control connection with the ozone generator and at least one detector connected to at least one signal input of the controller unit.

A brief description of the disinfectant effect of ozone can be found at the web link below: https://hu.wikipedia.Org/wiki/%C3%93zon#Az %C3%B3zon fert%C5%91tlen%C3%ADt%C5%91 h at%C3%A1sa (English version: https:// en.wikipedia.org/ wiki/ Ozone)

A short description of the medical use and effectiveness of ozone can be found on the page avail- able at the internet link below: https://hu.wikipedia.Org/wiki/%C3%93zon#Orvosi felhaszn%C3%A1 l%C3%A1 sa (English version: https://en.wikipedia.org/wiki/Ozone)

In the recent global health situation, properly controlled disinfection, including passivation and the restoration of the limit value for the protection of human health after disinfection can be ex- tremely widely used periodically in properly enclosed, even airtight, interiors, including hospital treatment and operating rooms, public institutions, schools, classrooms, etc.

A portable equipment named “AIRCLEAN 10G-WL” of expondo, Germany, having an ozone pro- duction capacity of 10 000 mg/h, can also be used for this purpose; when placed in a room, it con- tinuously circulates and sterilises the air, but includes only a timer that determines the duration of ozone production, which does not play a role in adjusting ozone production to the place of use. The equipment has no control and monitoring functions. The equipment is suitable for partly fil- tering out the airborne pathogens, but if someone enters the room with an infection adhered to the surface of an object, it offers no solution.

Ozone disinfection involvesthe production of biocidal material of such quantity that one must not be in the room while the measured ozone concentration is above the health limit that is a rela- tively low threshold value compared to the one required for exerting a disinfectant effect.

US2018/0207307 discloses an equipment suitable for disinfecting objects, comprising, within a closed cover, an ozone generator, a controller unit in contact with the ozone generator and at least one detector connected to at least one signal input of the controller unit. In accordance with its decisive use purpose, this solution is suitable for disinfecting minor objects but not for treat- ment of larger enclosed spaces, rooms.

US10,555,548 B2 discloses an equipment suitable for disinfecting an enclosed space, operating on condition that preferably controlled air is available in the enclosed space. This equipment is preferably used, for example, for disinfecting spaces of transport vehicles, but is not suitable on its own for disinfecting larger enclosed spaces intended for human habitation.

US9,233,182 B2 discloses a portable equipment suitable for disinfecting objects or enclosed spaces, comprising an ozone generator, a controller unit in control connection with the ozone generator, and at least one detector connected to at least one signal input of the controller unit. The detector monitors the achievement of a predetermined ozone concentration level, and if that is reached, the controller unit stops the ozone production and then ensures to have an ozone concentration below the safety limit after the end of the disinfection phase. The equipment can be controlled directly or remotely, but it has no safety means that would interrupt ozone produc- tion or provide for an immediate reduction in ozone concentrations if events threatening human life occurred.

The goal of the equipment according to the invention is to allow the efficient, safe and controlled ozone disinfection of even larger-size enclosed spaces.

It has been recognised that ozone disinfection can be done more effectively and safely if a plural- ity of detectors is present in one equipment in the space to be treated, at its typical points and, on the other hand, if the movement of persons affecting also the space under treatment during the operation of the equipment is continuously monitored.

To achieve this goal, the equipment comprises, on the one hand, a plurality of detectors located in a deconcentrated manner in the space to be treated and a controlled ozone neutraliser unit and, on the other hand, human presence detectors are associated with the area to be treated, connected to the central controller of the equipment, and signal devices are assigned to it that warn persons approaching, intending to enter the area under treatment, of the emergency, and prevent their entry, as the case may be.

The set goal was solved by an equipment for disinfecting an enclosed space, such as a room, com- prising an ozone generator, a controller unit in control connection with the ozone generator and at least one ozone detector connected to at least one signal input of the controller unit, wherein the controller unit of the equipment, in control connection with the ozone generator, constitutes the central controller of the equipment, the central controller comprises a processor, a system operator memory and a programmable working memory connected to the processor, as well as a programmable timer stage, the output of a wireless communications module is connected to the first signal input, constituted by the processor, of the central controller, the input of a wireless communications module is connected to the first signal output, constituted by the processor, of the central controller, the first control output, constituted by the processor, of central controller is connected to the input of the ozone generator, the second control output, constituted by the processor, of central controller is connected to the input of an ozone neutraliser, the equipment comprises a plurality of ozone detector modules including an ozone detector, each ozone detec- tor module is independently battery powered, each ozone detector module has a built-in operat- ing microcontroller in communication with a built-in wireless communications module; at least one fan module including a fan moving the air of the room, each fan module is independently bat- tery powered, each fan module has a built-in operating microcontroller in communication with a built-in wireless communications module; at least one internal motion detector module including a motion detector, and at least one external motion detector module including a motion detector, each motion detector module is independently battery powered, each motion detector module has a built-in operating microcontroller in communication with a built-in wireless communications module, and each motion detector module includes a signalling unit emitting acoustic and/or vis- ual signals; and a user control unit, in communication relationship through its own built-in wire- less communication interface with the wireless communications module assigned to the central controller of the equipment.

According to a preferred embodiment of the equipment the ozone neutraliser comprises a man- ganese dioxide catalyst.

A further preferred embodiment of the equipment comprises a calibration module to calibrate the ozone detectors applied in the ozone detector modules, which includes an own ozone genera- tor and, moreover, a wireless communications module.

According to a further preferred embodiment of the equipment the calibration module is pro- vided with a lock ensuring its airtight closed condition.

According to a further preferred embodiment of the equipment the calibration module is pro- vided with a signalling unit detecting its airtight closed condition.

According to a further preferred embodiment of the equipment the central controller is con- nected to an external uninterrupted power supply ensuring uninterrupted powering.

In the following, the equipment according to the invention will be described in more detail with the help of an exemplary embodiment of the equipment, and with that of a drawing where

Figure 1 shows the block diagram of a possible embodiment of the equipment according to the invention,

Figure 2 is the circuit diagram of a possible central controller of the equipment according to the invention, Figure 3 is the circuit diagram of a possible ozone detector module of the equipment according to the invention,

Figure 4 is the circuit diagram of a possible ventilator module of the equipment according to the invention,

Figure 5 is the circuit diagram of a possible motion detector module of the equipment accord- ing to the invention,

Figure 6 is the circuit diagram of a possible calibration module of the equipment according to the invention.

In our description, LoRa (Long Range) radio means radio communication that can be operated freely in the digital ISM band and is based on a low-power Wide Area Network (LPWAN) technol- ogy. Its types differ in terms of modulation; these are mostly disclosed in free accessible docu- mentation.

NB-loT means a radio communication technology using a narrowband mobile network specifically adapted to the low data traffic of the built-in equipment. One specific of this equipment is the ex- cellent penetration of the radio signal, that is, it can be used also in such places as a cellar, where traditional mobile communication no longer works.

WiFi means standard wireless network communication. In our case, it is used for communication with a smart equipment used as user control unit 12, such as a smartphone, but other known, also standard and widespread, devices such as Bluetooth communication can also be used.

In the exemplary equipment, a dedicated smart phone or tablet is used as user control unit 12 to start, monitor and, if necessary, prematurely stop the disinfection process, and to teach the elec- tronics to be described below, to calibrate the various detectors and set the various disinfection and operating parameters.

Server 15 means a dedicated server 15 to which the individual disinfection devices can be con- nected. By its use remote access can be provided to the disinfection equipments, and on the other hand, the performed successful disinfections can be verified.

The disinfecting equipment according to the invention is modularly structured and can be freely configured through a telephone application. The equipment comprises the following main units:

1 ) Central unit, which comprises one central controller 1 and may comprise an ozone generator 2, an ozone neutraliser 3, although the last two can also be implemented as two separate external units. External peripherals are connected to the central controller 1 through built-in communica- tions modules 4 allowing wireless radio communication; wireless radio communication, as written above, can be a LoRa, NB-loT or WiFi connection or any future communication solution. Basically, everything is connected to the central controller 1, this is where a main disinfection program is also running, and an external uninterruptible power supply 5, which ensures uninterruptible power supply that guarantees the safe operation of the equipment also in the event of a power failure, can be connected to it in one of the usual ways.

1a) Ozone generator 2 — several can also be used - built into the central unit or realised as a separate unit that can be any, even commercially available, battery- or mains-powered ozone generator 2.

1b) Ozone neutraliser 3 - several can also be used - built into the central unit or realised as a separate unit, designed as a mobile air duct that converts ozone (O₃) back to oxygen (O₂) as a kind of catalyst, to bring the room's ozone content below the health limit in the shortest possi- ble time. Ozone concentration is being measured continuously, and the equipment signals when this has taken place and the room can be entered.

Otherwise, after several hours of passive time, ozone depletion occurs also spontaneously, but this can only be applied if there is enough time, confirmed by measurements, between disinfec- tion and entry, i.e. if ozone depletion is guaranteed.

1c) The already mentioned central controller 1 integrated in the central unit that controls and regulates the course of ozone production, disinfection, ozone neutralisation and the operation of the necessary components and peripherals ever, similarly to the control units of the known devices. Central controller 1 comprises a processor, a system operating memory and a pro- grammable working memory connected to the processor, and a programmable timer stage in a manner known in the art. Preferably, it operates directly from the mains, secured by the con- nected external uninterruptible power supply 5, i.e. one that is not integrated in the central unit that provides for the above-mentioned uninterruptible power supply. The output of wireless communications module 4 is connected to the first signal input constituted by the processor of central controller 1, and the input of communications module 4 is connected to its first signal output constituted by the processor; its first control output constituted by the processor is con- nected to the control input of ozone generator 2, its second control output constituted by the processor is connected to the control input of the ozone neutraliser 3, and its two additional two control outputs are designed as standard mains sockets for the ozone generator 2 and the ozone neutraliser 3 designed as external units - their use depends on the size and nature ever of the room and objects to be disinfected, in accordance with the relevant technical literature. The reliability and service life of the equipment are increased if the outputs, i.e. the said mains sock- ets connected to central controller 1 are switched by solid state relays. Central controller 1 also includes a LoRa radio communications module 4 and has a unique identifier, ID.

2) Ozone detector modules 6, that are separate units, can be placed in any number depending on the room concerned, they are battery-powered and their statuses, which apply not only to ozone concentration, but also, for example, to the own battery charge level, can be queried by the LoRa radio communications modules built into the modules. The function of ozone detector modules 6 is to locally measure the disinfecting ozone concentration at various points of the closed room, and send the measured values via radio communication to the central controller 1. Each ozone detector module 6 has a unique ID.

3.) A battery-powered circulation fan module 7, used as an external peripheral and controlled via any number of LoRa radio 4 communications modules, which promotes the even distribution of ozone in the disinfected space. The fan used in the example is connected to central controller 1 via the LoRa radio 4 communications modules in the three wired modes known in the art (supply voltage, zero, speed signal) and central controller 1 sets and maintains the fan speed through in- structions sent by the radio. The charge level of the built-in battery and the current fan speed can also be queried with this module. Each fan module 7 has a unique ID.

4.) As the room concerned is saturated with a high ozone-air concentrate during disinfection, safety functions must also be integrated in the equipment; therefore, two safety units are con- nected to the central controller 1. One of the safety units is an outdoor motion detector module 8 designed for signalling, arranged outside the room to be treated, that emits an acoustic and/or visual signal in case of human approach. The other safety unit is an indoor motion detection mod- ule 9 designed for intervention, that goes live when it detects movement inside the room: at that point, if disinfection is still in the ozone generation cycle, it stops the ozone generator 2 and also emits a warning acoustic and/or visual signal through its own built-in signalling unit 10 and through a signalling unit 10 located in the central unit. The used motion detector can be PIR or ra- dar based: its operating principle and structure is basically known in security technology. Each motion detector module 8, 9 also includes LoRa radio communications modules 4 and has its own unique equipment ID. The battery charge level and whether a motion event has occurred can be queried via the LoRa radio communications module 4. If it did, the alarm outputs of the motion detection modules 8, 9 can be activated via the communications modules 4 that are 12 V outputs commonly used in the art. Motion detector modules 8, 9 can also be used in any number, each motion detector module 8, 9 has a unique ID. 5.) The apparatus, more precisely the ozone detector modules 6, have as accessory also a calibra- tion module 11 , which in this case is an airtight box in which the ozone detectors have to be cali- brated at certain intervals so that the central controller 1 does not receive a false signal from the ozone detector modules 6. Calibration can be performed, for example, from an application run- ning in the user control unit 12.

The purpose of the calibration module 11 is to be able to calibrate the ozone detectors used in ozone detector modules 6 of the equipment at chosen times, so that all ozone detectors intended to be used give an identical response, i.e. an identical signal, for a given ozone level. The also bat- tery-powered calibration module 11 includes a stand-alone, low-power ozone generator 13 and a LoRa radio communications module 4, and it is provided with a remote-controlled locking equip- ment 14 for closing the box, e.g. with an electric door lock or a closed position monitoring switch, e.g. with a micro switch. The battery charge level and the closed state of the box door can be que- ried, and the built-in ozone generator 13 can be started and stopped through the radio communi- cations module 4. During calibration, a preselected ozone concentration level is generated by the built-in ozone generator 13, then this is switched off for querying the measured ozone detectors in the box. If a value indicated by an ozone detector is significantly out of line, it will be marked as a bad ozone sensor, and the others will be calibrated.

The units and peripherals in the equipment shown have a unique identifier of 2 bytes, where the upper 4 bits of the 16 bits indicate the device, e.g.:

0000 - central controller 1

0001 - ozone detector module 6

0010 - fan module 7

0011 - internal motion detector module 8

0100 - external motion detector module 8

0101 - calibration module 11

These IDs can also be found on the units and peripherals themselves, for example in the form of a QR code that can be read by a smartphone used as user control unit 12. The peripherals to be used for disinfection during commissioning can be “taught” to the central controller 1 by reading this identification QR code, which is also physically present on the peripheral, by means of the user control unit 12.

The purpose of the equipment is to automatically disinfect an enclosed space or room of any ca- pacity. In the enclosed space, disinfection by the equipment takes place without human interven- tion, through enrichment with a sufficient amount of ozone for a definite period of time, not only in the air, but also on the surface of objects and devices.

This is made possible by placing a central unit in the room to be treated, preferably, based on ex- perience, so that its side wherefrom air is sucked lies close to a wall surface or a delimiting sur- face. The central unit comprises the ozone generator 2, the central controller 1 and the signalling unit 10 emitting an acoustic and/or visual signal of warning if someone enters the room during disinfection, and it contains the ozone neutraliser 3 needed to deplete ozone. These units can be designed as a single unit, if required.

In the exemplary embodiment, all peripherals, ozone detectors, fans, motion detectors and cali- bration boxes are in wireless connection with the central controller 1 via a known, in the present case LoRa, network.

At the end of the disinfection process, the equipment uses a catalyst material, manganese diox- ide, MnO₂, for the accelerated depletion of ozone. The equipment preheats and blows through the manganese dioxide the ozone-containing air being blown in. Manganese dioxide is heated to a temperature of around 50 °C to decompose ozone and convert it back to oxygen with the best possible efficiency, a process known to those skilled in the art from the relevant technical litera- ture.

Due to the automatic operation of the disinfection equipment, it can disinfect enclosed spaces or rooms of any size; therefore, any number of external radio peripherals can be used, as required.

The central controller 1 , which includes also microprocessor control, has both WiFi and LoRa radio connection, and ail external peripherals necessary for the operation of the equipment are con- nected to it via the LoRa radio connection, except for the user controi unit 12 acting as configura- tor and external monitoring equipment, such as a smart phone, connected to the central control- ler 1 by WiFi or by the WIFi-GGM connection of a server 15 of the equipment, by GSM/GPRS con- nection.

An optional part of the equipment is the remote server 15, with which the exact location, start, stages, extraordinary events of the disinfection, e.g. emergency shutdown or entry into the disin- fected room and termination, can be monitored with appropriate authorisation. These can even be sent to the user as e-mail notification or viewed at any time afterwards.

With a GSM interface of the server 15, notifications can be sent to an unlimited number of mobile devices in a known way.

Also included in the exemplary embodiment is the user control unit 12, such as a “smart phone” as configuration and monitoring equipment, in an impact-resistant IP68 design with WiFi and GPRS data connection where an application belonging to the equipment can be run.

The application gives feedback on the status of ail connected wireless devices, e.g. indicates if they are switched on, indicates e.g. battery charge levels, speeds, ozone concentration values, motion detection statuses, the status of the central controller 1, and so on.

Each external device contains a QRcode which, if scanned by an application running in the smart- phone, assigns the external device as part of the equipment to the central controller 1.

It is not absolutely necessary to arrange the ozone generator 2, the ozone depleting catalyst used as ozone neutraliser 3 and the central controller 1 in a single unit, but such a design is preferred. In this case, the main part of the equipment can be realised as a high-voltage-exited, ozone- generating device operating on the basis of the corona-discharge principle provided with func- tional air-permeable openings, with a stainless steel plate casing, where the ozone being pro- duced is blown out of an air duct by a fan. The equipment draws in air on the inlet side, and lets the ozone-enriched air out on the outlet side. When the ozone generator 2 is activated, the built- in fan always switches on. A control module, such as a microcontroller, can activate the ozone generator 2 and the associated fan through radio communication, e.g. by switching on a solid state relay, and switch off the ozone generator 2 after the disinfection cycle until the external ozone detector modules 6 indicate to the central controller 1 a value below the health limit.

When this is done, the equipment shuts down and signals to the user control unit 12 via WiFi that the entire cycle has been completed.

By measuring ozone concentration with one or more external ozone detector modules 6, the equipment ensures the ozone concentration set by the user control unit 12 via the ozone genera- tor 2 for a proper time to allow disinfection to take place.

As is known to those skilled in the art, a local server can be run in the control unit or in an associ- ated IT device, which allows to record and transmit to remote server 15 the disinfection data and to access them in the usual way via a web interface with an external device.

Preferably, six types of battery-powered external peripherals can be connected to the central con- troller 1, in the case presented here via the already mentioned LoRa radio connection, and up to 4 096 devices are possible per type. This is not necessary in the present case; an exemplary equipment comprises the following peripherals:

Ozone detector module 6

Battery-powered (e.g. 4.2 V, Li-Po) module with LoRa radio communication, an operating micro- controller and an ozone detector on the input side. The ozone detector is fitted on the top of the module's ready-mounted box with a detachable connector for easy service or replacement, if necessary.

The ozone detector module 6 uses radio communication to transmit the measured ozone concen- tration values which are then processed by the central controller 1 of the ozone generator 2 that also intervenes according to the outcome of the processing.

The wireless ozone detector modules 6 are of identical size, at least 1 and at most 255 ozone de- tector modules 6 can be used for one equipment; Figure 1 shows three ozone detector modules 6 by way of example. Each of ozone detector modules 6 has a stainless steel outer casing, they stand on three tapered, pointed legs to contact the ground on as small a surface as possible. The legs also serve as charging point through which the built-in battery can be charged. The ozone de- tector module 6 gives feedback by a continuous green light during normal operation, in the event of a fault the green indicator light starts flashing.

Air circulating fan module 7

Battery-powered (e.g. 4.2 V, Li-Po) module with LoRa radio communication, an operating micro- controller control unit and in this example a fan with a diameter of 200 mm, of which Figure 1 shows three fan modules 7 as an example. It is controlled from the central controller 1, which also regulates the fan speed depending on disinfection stage ever. The fan starts at high speed which decreases depending on the feedback of the deployed 6 ozone detector modules if the measured values of ozone detector modules 6 converge as a percentage. The same is true for ozone deple- tion: as ozone concentration decreases and similar, uniform percentage data are returned from ozone detector modules 6, the fan speed decreases and then the fan stops. The fan blades can be lit for purely aesthetic and design purposes. Each air circulation fan module 7 has a stainless steel outer casing ending in three tapered, pointed legs to contact the ground on as small a surface as possible. The legs also serve as charging point through which the built-in battery can be charged.

Motion detector module 8 within an enclosed space or room

Battery-powered (e.g. 4.2 V, Li-Po) module with LoRa radio communication, an operating micro- controller control unit, located in the enclosed space or room to be treated, thus forming the sec- ond stage of the two-stage motion-detection-based warning; it stops the disinfection process through the central controller 1 and generates a strong acoustic or visual signal partly with the help of its own built-in signalling unit 10 and partly through the signalling unit 10 of the central controller 1. It sends a disinfection stopped message to the user control unit 12 by GSM / GPRS connection; the user can stop the alarm by the user control unit 12 and the application running on it. Each motion detector module within a room - Figure 1 shows three motion detector modules 8 by way of example - has a stainless steel outer casing ending in three tapered, pointed legs to contact the ground on as small a surface as possible. The legs also serve as charging point through which the built-in battery can be charged. Each motion detector module 8 has a unique ID.

Motion detector module 9 outside a room

Battery-powered (e.g. 4.2 V, Li-Po) module with LoRa radio communication, an operating micro- controller control unit, located at one or several doors or windows of the space or room to be treated. Its structure is the same as that of motion detector module 8; as for its function, it emits acoustic and visual signalswhen someone approaches the entrance and ozone concentration dur- ing the disinfection cycle exceeds the health limit value.

It is forbidden to be in the room during the disinfection cycle; therefore, a two-stage motion de- tection warning is needed, that is also handled by the central controller 1 which sends the user control unit 12 a notification about it. The first stage is provided by the device installed outside the door, with a softer acoustic and visual signal. The central controller 1 transmits the informa- tion to the user control unit 12 at the same time as the signal is emitted, so the user is informed that the entrance door has been approached, but this signal does not stop the disinfection cycle as yet.

Each motion detector module 9 outside a room - Figure 1 shows three motion detector modules 9 by way of example - stands on three tapered, pointed stainless steel legs to contact the ground on as small a surface as possible. The legs also serve as charging point through which the built-in battery can be charged. Each motion detector module 9 has a unique ID.

Calibration module 11 for the ozone detector modules 6

Battery-powered (e.g. 4.2 V, Li-Po) airtight ABS plastic box with foamed silicone seal, with LoRa radio communication and an operating microcontroller control unit. The low-power ozone gen- erator 13 in the calibration box enriches the ozone to a specified value within the sealed box; the ozone detectors 6 arranged in it determine a mean value based on averaging the measured val- ues, and the central controller 1 classifies the ozone detectors 6 based on the specified mean val- ues. An excessive value during calibration indicates a fault in the respective ozone detector 6, the central controller 1 displays this as a warning on the user control unit 12, and it excludes the bad ozone detector 6 until it is replaced with an ozone detector 6 showing a value close to the average relative to the other ozone detectors 6 during a new calibration. In the calibration module 11 of the exemplary equipment, calibration can be done with at least four ozone detectors; a total of eight ozone detectors can be installed simultaneously in the calibration box. The calibration box stands on three tapered, pointed stainless steel legs to contact the ground on as small a surface as possible. The legs also serve as charging point through which the built-in battery can be charged.

WiFi router supporting mobile data connection

For communication with the remote server 15 of an equipment according to the invention, data connection, preferably WiFi connection is necessary. To ensure this even at places without share- able Internet connection, the equipment includes a portable WiFi router operating with GSM / GPRS, NB loT data connection, which allows two-way data connection between the central con- troller 1, the remote server 15 and the user control unit 12. It can also be connected to social plat- forms through state-of-the-art logging features to publish where and when a site has been suc- cessfully disinfected.

Shockproof carrying case

Shockproof carrying case for the safe transportation of the wireless units, peripherals including, in addition to the usual sponge-lined internal compartment design, a mains connection input, built- in, stabilised switching power supplies, and recharger connections at the formed cradles of the devices. This unit is not necessary for the operability of the equipment according to the invention, but it greatly facilitates its use and applicability.

To use the equipment, ozone detector modules 6 should be installed at several places, e.g. under hospital beds, on cabinet tops, toilet seats, washbasins, etc.

The essence of ozone concentration and ozone dose measurement is that, during the disinfection process, the central controller 1 integrates the measured values obtained from the ozone detec- tor modules 6. Integration itself takes place at adjustable discrete time period, and it is expedient to specify a minimum value below which the central controller 1 does not perform integration.

At the end of the disinfection process, the central controller 1 knows and tells upon being queried which ozone detection module 6 has indicated a sufficient dose of disinfecting ozone and which has not.

In the last phase of the disinfection cycle, when ozone generator 2 is already shut off and ozone neutraliser 3 is active, the central controller 1 monitors the measured ozone concentration values received from the ozone detector modules 6, and when even the highest value falls below a pre- set minimum level, it signals that it has become safe to enter the room. One of the advantages of the equipment according to the invention is that, since ozone generator 2 always produces ozone at maximum power and stops ozone production only upon the feedback of the external ozone detector modules 6, the disinfection cycle time depends only on the air cu- bic meters concerned: no other parameters need to be pre-set or adjusted on the fly.

A further advantage is that the equipment according to the invention not only produces ozone, but also saturates the air with ozone, thus destroying ail pathogens adhering to any surface, not only those present in the air.

It is an advantage that the wireless external peripherals play also a life-saving role in addition to controlling the ozone generator 2. The equipment minimizes contact between the disinfectant and humans, given that strong ozone is harmful to the human body: it reliably ensures this by the use of the motion detector modules 8, 9 and the signalling unit 10.

It is also advantageous that measures can be carried out with ozone detector modules 6 located at different places and at different heights in the room, and the feedback to the central controller 1 plays an intervening role whether ozone distribution is sufficiently even in the room to be disin- fected, something that is promoted by the built-in fan and, if necessary, fan modules 7 designed as outdoor unit.

It is an advantage that, after the disinfection of the room, the manganese dioxide catalyst used as ozone neutralizer 3 of the equipment accelerates ozone depletion in the given room.

Although the equipment according to the invention has basically been designed for mobile use, it can also be operated in an integrated form. In this case, it is preferable if the disinfection cycle can be more advantageously parameterised relative to the room air cubic meter.

The equipment operates automatically and adapts to the enclosed space or room being disin- fected. Disinfection ends when central controller 1 has received a measurement signal indicating an appropriate disinfectant dose from all ozone detector modules 6, which means that the envi- ronment of even the ozone detector module 6 measuring the lowest dose has reached the de- sired disinfection level.

The equipment, more precisely the central controller 1 , can also be set so that the disinfection program ends after a predetermined maximum period of time has elapsed. In this case, the equipment will indicate that it has not received appropriate values from all ozone detector mod- ules 6, that is, some part of the room could possibly not be completely disinfected. List of references:

1 central controller

2 ozone generator

3 ozone neutralizer 4 communications module

5 uninterrupted power supply, UPS

6 ozone detector module

7 fan module

8, 9 motion detector module 10 signalling unit

11 calibration module

12 user control unit

13 ozone generator

14 lock 15 (remote) server

Claims

1. Equipment for disinfecting an enclosed space, such as a room, comprising an ozone generator (2), a controller unit in control connection with the ozone generator (2) and at least one ozone de- tector connected to at least one signal input of the controller unit, characterised in that the controller unit of the equipment, in control connection with the ozone generator (2), consti- tutes the central controller (1) of the equipment, the central controller (1) comprises a processor, a system operator memory and a programmable working memory connected to the processor, as well as a programmable timer stage, the output of a wireless communications module (4) is connected to the first signal input, consti- tuted by the processor, of the central controller (1), the input of a wireless communications module (4) is connected to the first signal output, consti- tuted by the processor, of the central controller (1), the first control output, constituted by the processor, of central controller (1) is connected to the input of the ozone generator (2), the second control output, constituted by the processor, of central controller (1) is connected to the input of an ozone neutraliser (3), the equipment comprises a plurality of ozone detector modules (6) including an ozone detector, each ozone detector module (6) is independently battery powered, each ozone detector module (6) has a built-in operating microcontroller in communication with a built-in wireless communica- tions module (4); the equipment comprises at least one fan module (7) including a fan moving the air of the room, each fan module (7) is independently battery powered, each fan module (7) has a built-in operat- ing microcontroller in communication with a built-in wireless communications module (4); the equipment comprises at least one internal motion detector module (8) including a motion de- tector, and at least one external motion detector module (9) including a motion detector, each motion detector module (8, 9) is independently battery powered, each motion detector module (8, 9) has a built-in operating microcontroller in communication with a built-in wireless communi- cations module, and each motion detector module (8, 9) includes a signalling unit (10) emitting acoustic and/or visual signals; the equipment comprises a user control unit (12), in communication relationship through its own built-in wireless communication interface with the wireless communications module (4) assigned to the central controller (1) of the equipment.

2. Equipment according to claim 1 , characterised in that the ozone neutraliser (3) comprises a manganese dioxide catalyst.

3. Equipment according to any of claimsl or 2, characterised in that it comprises a calibration module (11) to calibrate the ozone detectors applied in the ozone detector modules (6), which in- cludes an own ozone generator (13) and, moreover, awireless communications module (4).

4. Equipment according to claim 3, characterised in that the calibration module (11) is provided with a lock (14) ensuring its airtight closed condition.

5. Equipment according to any of claims 3 or 4, characterised in that the calibration module (11) is provided with a signalling unit detecting its airtight closed condition.

6. Equipment according to any of claimsl -5, characterised in that the central controller (1) is connected to an external uninterrupted power supply (5) ensuring uninterrupted powering.