JP2021153884A - Environmental sterilizing apparatus - Google Patents

Abstract

To provide an environmental sterilizing apparatus capable of performing indoor environmental sterilization more widely and surely.SOLUTION: There is provided an environmental sterilizing apparatus for performing indoor environmental sterilization, comprising: a route control unit which controls a moving route of the environmental sterilizing apparatus; a driving unit which moves the environmental sterilizing apparatus along a route determined by the route control unit; and a sterilizing processing unit which generates highly reactive radicals and releases them indoors under a predetermined condition, wherein the sterilizing processing unit releases the radicals when the environmental sterilizing apparatus moves along the route.SELECTED DRAWING: Figure 5

Description

The present invention relates to an environmental sterilizer. Specifically, the present invention relates to an environmental sterilizer that has a learning function and can move autonomously.

Environmental sterilization in common facilities such as schools, workplaces, commercial facilities, train stations, airports, etc., where an unspecified number of people pass or stay, is performed by, for example, a wiping method in which the environmental surface is wiped with a chemical. Commonly used bactericidal agents at this time include amphoteric surfactants such as Alkylpolyaminoethylglycine hydrochloride and quaternary ammonium salt-based cations such as Benzalkonium chloride. Surfactants, hydroxyl radicals and the like can be mentioned.

Further, as a sterilization method adopted when the area to be cleaned and sterilized is wide or when a worker cannot sufficiently secure the sterilization method, there is a spray method in which the sterilization liquid is atomized and sprayed. Among the spraying methods, a method using hydroxyl radicals is also known. As an example thereof, Patent Document 1 describes an ozone generator (1) and an ozone blowing mechanism for blowing generated ozone from a blowing port (12). It is equipped with a device (2) for atomizing the hydrogen peroxide solution and a hydrogen peroxide solution blowing mechanism for blowing out the atomized hydrogen peroxide solution from the outlet (32) to generate ozone and at the same time. A technique relating to a deodorizing / deodorizing / sterilizing device in which a hydrogen peroxide solution is generated in a mist state and the two are brought into contact with each other and then brought into contact with an object is disclosed.

International Publication No. 97/026925

However, there is a problem that the sterilization work by the above-mentioned wiping method cannot reduce bacteria and the like floating in the air. Further, the deodorizing / deodorizing / sterilizing device described in Patent Document 1 is a stationary type, and since the reactivity of hydroxyl radicals is very high, high-concentration hydroxyl radicals are sprayed only in the vicinity of the outlet, resulting in a wide space. It is difficult to deal with the case of sterilizing the whole of. Moreover, since both hydrogen peroxide solution and ozone are toxic to living organisms, there is naturally a limit to increasing the concentration and the amount of spray to enhance the bactericidal effect.

Therefore, an object of the present invention is to provide an environmental sterilizer capable of performing indoor environmental sterilization in a wider range and reliably.

One aspect of the present invention for achieving the above object is an environmental sterilizer that performs indoor environmental sterilization, and is a route control unit that controls the movement route of the environmental sterilizer and a route determined by the route control unit. A driving unit for moving the environmental sterilization device and a sterilization treatment unit for generating highly reactive radicals and releasing them indoors under predetermined conditions are provided, and the sterilization treatment unit is the environmental sterilization device. Is an environmental sterilizer that releases the radicals as it travels along the pathway.

According to the present invention, there is provided an environmental sterilizer capable of performing indoor environmental sterilization in a wider range and reliably.

It is a perspective view which shows the appearance of the example of the environmental sterilization apparatus which concerns on this embodiment. It is a bottom view which shows the appearance of the environmental sterilizer which concerns on this embodiment. It is a block diagram of an environmental sterilization system. It is a hardware block diagram of the environmental sterilizer which concerns on this embodiment. It is a schematic diagram which shows the structural example of the microorganism detection sensor 501. It is a schematic diagram which shows the structural example of the radical generation / release part 601. It is a functional block diagram of the environmental sterilizer which concerns on this embodiment. It is a flowchart which shows the processing process when the environmental sterilizer carries out environmental sterilization. It is a perspective view which shows the appearance of the example of the environmental sterilization apparatus which concerns on another embodiment. It is a hardware block diagram of the environmental sterilizer which concerns on another embodiment. It is a functional block diagram of the environmental sterilizer which concerns on other embodiments.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following embodiments and modifications thereof, substantially the same components may be designated by the same reference numerals, and the description thereof may be omitted as appropriate.

<About environmental sterilizer>
FIG. 1 is a diagram showing the appearance of the environmental sterilizer 1 according to the present embodiment. FIG. 1A is a perspective view, and FIG. 1B is a bottom view.

As illustrated in FIGS. 1A and 1B, the environmental sterilizer 1 in the present embodiment has a cylindrical body having a conical portion at the top, and an external surveillance camera is placed on the top of the conical portion. A sensor 90 is provided. On the side surface of the conical part, highly reactive radicals such as hydroxyl radical (OH radical) generated in the environmental sterilizer 1 and active oxygen species (Reactive Oxygen Species, ROS) such as ^{singlet oxygen (1} O ₂₎ An upper discharge port 12 for discharging (hereinafter, referred to as “radical” in the present specification) and a display 16 for displaying various information are installed. The outer shape of the environmental sterilizer 1 can be appropriately changed according to the request of the application, purpose, place of use, etc. without being restricted by the above. It should be noted that the "radical" does not exclude that a highly reactive component other than those exemplified above may be contained.

A lower discharge port 11 for discharging radicals mainly toward the floor surface and a plurality of drive wheels 13 are provided in the lower part of the cylindrical body portion. A cleaning unit 17 such as a brush for cleaning the floor surface is provided on the bottom surface of the body. Instead of the drive wheel 13, other types of moving means such as endless track and multi-limb walking can be adopted.

An intake port 14 is provided at an appropriate position on the side surface of the cylindrical body. Although not shown, a filter for capturing dust, foreign matter, etc. contained in the intake air is provided in the intake port 14. The air sucked from the intake port 14 is discharged from the discharge ports 11 and 12 via the sterilization mechanism 60 described later.

The environmental sterilizer 1 can be moved along a predetermined path by the drive wheels 13 while acquiring information on the surrounding situation by the external surveillance camera sensor 90. During movement, the floor surface is cleaned by a cleaning unit 17 equipped with a rotating brush, and radicals are emitted from the upper discharge port 12 and the lower discharge port 11 to sterilize the surrounding space, the surrounding wall surface, and the surrounding environment including the floor surface. To execute.

FIG. 2 shows a configuration example of an environmental sterilization system SS including a plurality of environmental sterilizers 1. The plurality of environmental sterilizers 1 (1a, 1b, 1c) communicate with each other and also communicate with the management server 2.

The management server 2 is a general computer having a communication function, and stores data used by the environmental sterilizer 1 such as operation schedule information, operation history information, operation area map information, and microorganism database of each sterilizer 1. It has a storage area to be used. The operation schedule information is data such as operation start / end times and operation locations of each environmental sterilizer 1. The operation history information is data showing the history of the past operation time, operation location, etc. of each environmental sterilizer 1. The operating area map information is map data created for the area (airport lobby, hospital waiting room, etc.) in which each environmental sterilizer 1 operates. The microorganism database is a database used for identifying the microorganism in the microorganism image received from the microorganism detection unit 144 described later. The microorganism image may be moving image data or still image data.

The communication content transmitted from each environmental sterilizer 1 includes, for example, its own position information, the presence / absence of detection of microorganisms to be sterilized, the battery state, the dust collection status by the cleaning unit 17, and the like. The communication contents transmitted from the management server 2 include, for example, operation schedule information of each environmental sterilizer 1, operation area map information, and the like. The information exchanged by these communications may be determined according to the specifications of the system SS.

Under the control of the management server 2, the environmental sterilization system SS can plan and carry out patrol cleaning and sterilization work in a predetermined area by a plurality of environmental sterilization devices 1. Each environmental sterilizer 1 can operate autonomously without exchanging information with the management server 2.

Next, the configuration of the environmental sterilizer 1 will be described.

<Structure example of environmental sterilizer 1>
FIG. 3 shows an example of the hardware configuration of the environmental sterilizer 1. As illustrated in FIG. 3, the environmental sterilizer 1 as hardware is a storage device composed of a processor 10, a memory device such as a CPU, a RAM, a flash memory, and a semiconductor memory (SSD), which are arithmetic devices such as a CPU. 20, drive mechanism 30, communication device 40, internal sensor 50 including microorganism detection sensor 501, sterilization mechanism 60 including radical generation / release unit 601, cleaning mechanism 70, battery 80, external surveillance camera sensor 90, and I / O. It includes a device 95.

The processor 10 realizes the function of the mounted environmental sterilizer 1 by reading the control program and the control data stored in the storage device 20 and executing the program. Data processing by the control program will be described later.

The drive mechanism 30 is a power control of a motor as a drive source of the drive wheels 13, a steering mechanism of each drive wheel 13, an inverter circuit or the like that controls power from the battery 80 to drive the motor and the steering mechanism. Includes circuit. The motor and steering mechanism are controlled by the power control circuit or the like by a control command from the processor 10. As described above, the drive mechanism 30 may be another system such as an endless track or a multi-limb walking mechanism. The steering mechanism is realized by a rotary support shaft, a link mechanism, and the like configured so that the directions of the drive wheels 13 can be changed. As the drive source, a power source other than the electric motor may be adopted.

The communication device 40 is composed of a network interface card that serves as a communication interface with the Wifi network, a communication module for communicating with a high-speed communication line such as a 4G or 5G network, or the like.

The internal sensor 50 includes a microorganism detection sensor 501. FIG. 4 shows a configuration example of the microorganism detection sensor 501 according to the present embodiment. The microorganism detection sensor 501 includes a digital microscope 510 and a sample capture tape 520. The digital microscope 510 is a device provided with a digital camera in place of the eyepiece of a normal microscope. For the purpose of detecting bacteria such as pathogenic Escherichia coli, a magnification of about 1000 to 2000 times is suitable, and it can be selected from various commercially available products. Use a higher magnification microscope if virus detection is required.

The sample capture tape 520 is a long tape-shaped member for capturing bacteria and the like in the air taken into the microorganism detection sensor 501 from the intake port 14, and for example, cellophane tape and the like are preferably used. The sample capture tape 520 can be wound from one reel to the other by a winding mechanism (not shown) between the pair of reels 530. The sample capture tape 520 may be housed in a predetermined cartridge so that it can be easily replaced.

In the microorganism detection sensor 501, the air sucked into the environmental sterilizer 1 from the surrounding environment as described above is brought into contact with the sample capture tape 520 to attach bacteria and the like to the surface thereof, and the image is imaged by the digital microscope 510. It is possible to adopt a method of performing image analysis processing. However, the method is not limited to that method. The digital image data acquired by the digital microscope 510 can be transmitted to the management server 2 via the communication device 40. A method for identifying a microorganism by acquiring a moving image of the microorganism and analyzing the moving image is disclosed in, for example, Japanese Patent No. 6329680.

The sterilization mechanism 60 includes a radical generation / release unit 601. FIG. 5 shows a configuration example of the radical generation / release unit 601 of the present embodiment. The radical generation / emission unit 601 includes an ultrasonic wave generation unit 610, a plasma generation unit 620, an intake fan 630, and an exhaust fan 640, which are housed in a hermetically sealed chamber.

The ultrasonic wave generation unit 610 is a device that generates a high-temperature and high-pressure state by cavitation by applying energy to water vapor or the like existing in the air by an ultrasonic vibrator, and generates radicals by thermal decomposition. A piezoelectric ceramic element or the like can be used as the ultrasonic vibrator, and the drive voltage and drive frequency may be appropriately set.

The plasma generation unit 620 is a device that generates an aerial plasma discharge between an anode electrode and a cathode electrode provided so as to face each other, thereby generating radicals. Various configurations can be adopted for the plasma discharge portion, an example of which is described in US Pat. No. 10,111,777. In addition, a technique of directly introducing a multi-gas low-temperature plasma into water to generate various active species is also known.

The intake fan 630 sucks the outside air from the intake port 14 and takes it into the chamber. A part of the bacteria and the like contained in the taken-in outside air is sent to the microorganism detection sensor 501, and then sterilized in the chamber.

The radicals generated by the ultrasonic wave generating unit 610 and the plasma generating unit 620 are discharged from the discharge ports 11 and 12 to the surrounding space by the exhaust fan 640. Radicals have a very short life due to their activity, but in this embodiment, due to the propagation effect of ultrasonic waves from the ultrasonic wave generator 610, they reach a range of several meters from the outlets 11 and 12 and exert a bactericidal effect.

The cleaning mechanism 70 includes various types of rotary brushes, a motor for driving the rotary brush, and the like, and collects dust existing on the floor surface and collects it in the main body.

The battery 80 is a power source that supplies necessary power to each operating part of the environmental sterilizer 1, and various secondary batteries such as a lithium secondary battery are preferably used.

The external monitoring camera / sensor 90 includes a video camera for acquiring a moving image equipped with a CCD as an image sensor, and a position measurement sensor (for example, a device such as a laser distance measuring device) used for autonomous driving control. The environmental sterilizer 1 is a video. The surrounding situation can be acquired as a moving image by a camera, and the approach of a person or another object can be detected using various image analysis techniques. The detection result is incorporated into a control program executed by the processor 10 to sterilize the environment. It is reflected in the control of the device 1. Further, the environmental sterilizer 1 can calculate its own position from the measurement result by the position measurement sensor and the acquired map data of the operating area, and determine the movement route.

The I / O device 95 is a display 16 (FIG. 1A) provided with a touch panel. The I / O device 95 functions as a data input unit for the processor 10 and an output data display unit from the processor 10.

The above hardware elements are connected by power supply / internal communication lines 91 and 92.

Next, the functional block configuration of the environmental sterilizer 1 will be described.

Function of Environmental Sterilizer 1 Fig. 6 shows an example of the functional block configuration of the environmental sterilizer 1. As illustrated in FIG. 6, the environmental sterilizer 1 has a data processing unit 104. The data processing unit 104 is implemented as a computer program executed by the processor 10 and is stored in the storage device 20. The data processing unit 104 has each functional module of a drive mechanism control unit 141 having a route control unit 145, a radical generation / release control unit 142, a cleaning mechanism control unit 143, and a microorganism detection unit 144.

The drive mechanism control unit 141 receives data on the route to be taken when the environmental sterilizer 1 is moved, which is determined based on the data processing described later, from the route control unit 145, and the environmental sterilizer according to the route data. The motor and steering mechanism of the drive mechanism 30 are controlled so that 1 moves.

The radical generation / release control unit 142 has a function of controlling the amount of radicals generated by the radical generation / release unit 601. Specifically, for example, the output and frequency of the ultrasonic wave generating unit 610, the voltage of the aerial plasma discharge in the plasma generating unit 620, the generation frequency, and the like are adjusted by the radical generation method.

The cleaning mechanism control unit 143 controls the number of rotations of the brush provided in the cleaning unit 17, the amount of protrusion of the brush to the outside of the main body when the brush has a movable mechanism, and the like. This control is executed according to the route data received from the route control unit 145, the dust suction resistance, the amount of collected dust, and the like.

The microorganism detection unit 144 executes detection and identification of microorganisms by image analysis based on the microorganism image acquired by the microorganism detection sensor 501.

The data storage unit 106 stores various data used for data processing by the data processing unit 104. The data storage unit 106 includes a map data storage unit 161, a route data storage unit 162, an operation history data storage unit 163, a microorganism detection data storage unit 164, a radical generation / release control data storage unit 165, and a cleaning mechanism control data 166.

The map data storage unit 161 records in advance the range in which the environmental sterilizer 1 can move in the form of two-dimensional map data for the area where the environmental sterilizer 1 is used, for example, the terminal floor of an airport.

The route data storage unit 162 stores data related to the route to be moved by the environmental sterilizer 1 generated by the route control unit 145. The route data may be generated at the start of operation based on the map data relating to the plurality of target areas stored in the map data storage unit 161, or may be stored in advance as a plurality of route patterns. It is also possible to install signs such as a QR code (registered trademark) and a reflective material for guiding the environmental sterilizer 1 on the floor surface of the operating area without generating route data from the map data. can.

The operation history data storage unit 163 stores individual tasks executed by the environmental sterilizer 1 in the past as operation history data such as execution date and time, used route data, microorganism detection record, and radical generation history.

The microorganism detection data storage unit 164 records the detection record by the microorganism detection unit 144 with respect to the date and time, the place (position on the map data), the type of microorganism, and the like.

The radical generation / release control data storage unit 165 records the amount of radicals generated in the past task over time.

The cleaning mechanism control data 166 records the operating state and the like of the cleaning mechanism 70 in the past task.

The data used for controlling the environmental sterilizer 1 is not limited to the above, and may be added or changed as appropriate according to the required specifications of the device / system.

The communication unit 102 is configured by a program or the like mounted on the communication device 3 of FIG. 3 to realize the communication function.

Next, the data processing executed by the data processing unit 104 will be described.

<Data processing by the data processing unit 104>
FIG. 7 illustrates a data processing flow executed by the data processing unit 104.

When the data processing unit 104 starts processing in response to a power-on, a start command from the management server 2 or the I / O device 95, the data processing unit 104 moves based on the map data read from the map data storage unit 161 by the route control unit 145. Generate data about the route to be taken (S501). Map data can be created through the "Simultaneous Localization And Mapping (SLAM) process" by the position measurement sensor of the external monitoring camera / sensor 90 while the environmental sterilizer 1 is operating. good.

Next, the data processing unit 104 accesses the microorganism detection data storage unit 164 and determines whether or not there is a microorganism detection record (S502). When it is determined that there is a microorganism detection record (S502, YES), the data processing unit 104 incorporates the detection point into the route data as necessary so that the recorded detection point is included in the route to be moved (S503). ). Next, the data processing unit 104 transmits the generated route data to the drive mechanism control unit 141 (S504). When it is determined in S502 that there is no microorganism detection record (S502, NO), the data processing unit 104 executes the processing of S504 as it is.

Next, the data processing unit 104 controls the drive mechanism 30 so that the environmental sterilizer 1 moves along the determined path by the drive mechanism control unit 141. Further, while the environmental sterilizer 1 is moving, the data processing unit 104 causes the radical generation / release unit 601 to generate radicals by the radical generation / release control unit 142 and discharges them from the upper discharge port 12 and the lower discharge port 11 (S505). ). Thereby, the surrounding environment such as the surrounding space, the wall surface, and the floor surface along the moving path of the environmental sterilizing device 1 can be sterilized. Further, since the cleaning mechanism 70 also operates during movement, the floor surface can be cleaned at the same time. The sterilization also includes the inactivation of the virus.

Next, the data processing unit 104 determines whether or not the microorganism is detected by the microorganism detection unit 144 (S506), and if it is determined that the microorganism is detected (S506, YES), the environmental sterilizer 1 is stopped at that point. The radical is released for a predetermined time (S507). After the lapse of a predetermined time, the data processing unit 104 restarts the movement of the environmental sterilizer 1. When no microorganism is detected in S506 (S506, NO), the data processing unit 104 continues to move the environmental sterilizer 1 along the path through the drive mechanism control unit 141 and generates and releases radicals.

Here, the detection of microorganisms is realized by the microorganism detection unit 144 accessing the microorganism database stored in the management server 2 and comparing the moving image acquired by the microorganism detection sensor 501 with the image data of the microorganism database. However, the microbial image data to be controlled may be stored in the data storage unit 106 in advance. In this case, it is not necessary to communicate with the management server 2 when detecting microorganisms, and the detection speed is improved.

In S508, the data processing unit 104 determines whether the environmental sterilizer 1 has reached the end point of the route (S508). When it is determined that the end point of the route has been reached (S508, YES), the data processing unit 104 ends the main processing flow. When it is determined that the end point of the route has not been reached (S508, NO), the data processing unit 104 continues the movement of the environmental sterilizer 1 and the release of radicals by executing the process of S505.

By the above operation of the environmental sterilizer 1, it is possible to reduce microorganisms harmful to health and maintain good hygiene in public spaces such as hospital passages, floors, airports, and terminal floors of stations. Further, since the environmental sterilizer 1 releases radicals while moving along a predetermined path, unlike the stationary sterilizer, sterilization can be efficiently performed over the entire target space.

<Modified example of the embodiment>
Various modifications can be made to the above-described embodiments of the present invention. Here, a modified example of the environmental sterilizer 1 according to the present embodiment will be described. FIG. 8 is a diagram showing the appearance of the environmental sterilizer 1 according to the present modification, FIG. 9 is a diagram showing a hardware configuration example thereof, and FIG. 10 is a diagram showing a configuration example of the functional block. 8, 9, and 10 correspond to FIGS. 1, 3, and 6, respectively, which illustrate the embodiment. As shown in FIG. 8, the environmental sterilizer 21 of this modified example has a columnar structure extending upward from the top of the conical portion. An ultraviolet irradiation device 18 is provided at the tip of the columnar structure. While the environmental sterilizer 21 is operating, the ultraviolet irradiation device 18 irradiates the surrounding space with ultraviolet rays, so that microorganisms floating in the space, microorganisms adhering to the wall surface, and the like can be sterilized. The ultraviolet irradiation device 18 is preferably provided at a height of about 2000 to 2300 mm from the floor surface so that the ultraviolet rays are not directly irradiated to a person.

In the hardware configuration example of the environmental sterilizer 21 of FIG. 9, the sterilization mechanism 60 is provided with an ultraviolet (UV) irradiation mechanism 602. As the UV irradiation mechanism 602, an existing UV lamp can be used. Further, it is desirable that the UV irradiation mechanism 602 is provided with a rotation mechanism of a UV lamp so that ultraviolet rays can be evenly irradiated to the surrounding space during the operation of the environmental sterilizer 21. The output and wavelength of the UV lamp may be determined in consideration of the bactericidal effect and the influence on the surrounding environment.

The UV irradiation mechanism 602 is controlled by the UV irradiation mechanism control unit 146 shown in FIG. When the UV irradiation mechanism control unit 146 detects a moving object around the device 21 by, for example, imaging with an external surveillance camera / sensor 90, the UV irradiation mechanism control unit 146 can execute safety control such as reducing or stopping the output of the UV lamp. ..

The environmental sterilizer 21 according to this modification is controlled by the data processing flow illustrated in FIG. 7, similarly to the environmental sterilizer 1 of the previous embodiment. For example, UV irradiation of the UV irradiation mechanism 602 by the UV irradiation mechanism control unit 146 can be added to S505 of FIG. 7.

According to the environmental sterilization device 21 according to the above modification, the sterilization effect of the UV lamp can be obtained in addition to the effect of the environmental sterilization device 1 of the embodiment.

The environmental sterilizers 1 and 21 of the present embodiment may be further provided with an ultrasonic wave generator. By generating ultrasonic waves at frequencies that pests and pests such as mice, flies, and mosquitoes repel, it is possible to eliminate these pests and pests from public spaces.

Further, the environmental sterilizers 1 and 21 of the present embodiment may be provided with a temperature sensor and a humidity sensor so as to notify the management server 2 of the surrounding environment of the movement route. Furthermore, heat detectors may be provided in the environmental sterilizers 1 and 21 of the present embodiment so that an abnormality such as a fire can be detected. A similar function can be realized by providing a thermography function in the external surveillance camera sensor 90. In that case, it is also possible to measure the body temperature of the face image detected by the moving image and acquire information on whether or not the person concerned has a fever.

Although the present invention has been described above with reference to the drawings in line with its embodiments, it should not be construed that the technical scope of the present invention is limited by those embodiments. Rather, the present invention includes not only the inventions described in the claims but also modifications thereof.

1,21 Environmental sterilizer 2 Management server 10 Processor 10
20 Storage device 30 Drive mechanism 40 Communication device 50 Internal sensor 50
60 Sterilization mechanism 70 Cleaning mechanism 80 Battery 90 External monitoring camera / sensor 95 I / O device 104 Data processing unit 106 Data storage unit 501 Microorganism detection sensor 601 Radical generation / release unit

Claims (7)

An environmental sterilizer that sterilizes the environment indoors.
A route control unit that controls the movement route of the environmental sterilizer and
A drive unit that moves the environmental sterilizer along a route determined by the route control unit, and
A sterilization treatment unit that generates highly reactive radicals and releases them indoors under predetermined conditions is provided.
The sterilization unit releases the radicals as the environmental sterilizer moves along the pathway.
Environmental sterilizer. The environmental sterilization apparatus according to claim 1, wherein the sterilization treatment unit includes a first discharge port capable of releasing the radical toward the floor surface. The environmental sterilization apparatus according to claim 1 or 2, wherein the sterilization treatment unit includes a second discharge port arranged at a predetermined height from the floor surface capable of releasing the radical toward the surrounding space. Further provided with a microorganism detection unit for detecting microorganisms existing indoors,
The driving unit stops the environmental sterilizer for a predetermined time when the microorganism detecting unit detects the microorganism.
The environmental sterilization apparatus according to any one of claims 1 to 3, wherein the sterilization treatment unit releases the radicals while the environmental sterilization apparatus is stopped. The environmental sterilizer according to claim 4, wherein the microorganism detection unit detects the microorganism by optical means. The route control unit records the points on the route where the microorganism detection unit detected the microorganism, and includes all the points on the route where the microorganism was detected last time in the next route and stops at each of the points. The environmental sterilizer according to claim 4 or 5, which controls the drive unit as described above. The environmental sterilizer according to any one of claims 1 to 6, further comprising an ultraviolet irradiation unit that irradiates an ultraviolet ray toward a surrounding space.

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