JP2001321430A - Sterilizing device by ozone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inhibit an entrance to a room by generating an alarm or locking a door against a person tending to enter the room when a concentration of an ozone in a predetermined space is a predetermined value or more. SOLUTION: The ozone generated from an ozonizer is introduced together with air into the predetermined space 12a through a supply tube 36 by a supply means 13. A first ozone eraser 41 for decomposing the ozone is provided in the tube, and a bypass tube 43 for bypassing the eraser is connected. The air containing the ozone is switched by a switching valve 44 so as to be introduced to the eraser or the bypass tube. A second ozone eraser 42 for decomposing the one is provided in an exhaust means 14 for exhausting the air or the air containing the ozone in the space. The switching valve is switched to introduce the air containing the ozone to the bypass tube when the space is sterilized or to introduce the air containing the ozone to the first ozone eraser when the space is not sterilized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for sterilizing a predetermined space such as a tent, a locker, and a box-shaped carrier using ozone.

[0002]

2. Description of the Related Art Conventionally, as an apparatus of this type, foods to be served are stored in a storage room, and ozone generated by an ozone generator is forcibly sent into the storage room by an ozone sending means. A serving car configured to adjust the ozone concentration in the storage room by the ozone concentration control means is disclosed (Japanese Patent Application Laid-Open No. Hei 9-135731). In this serving car, the ozone concentration control means has a control timer for operating the ozone generator intermittently.

[0003] In the serving truck configured as described above, ozone generated by the ozone generator is sent into the storage room by the ozone sending means, so that the storage room is deodorized and the propagation of various bacteria is suppressed by the ozone. Further, by adjusting the interval of the intermittent operation of the ozone generator by the control timer, the ozone concentration in the storage chamber can be maintained at an optimum value. As a result, when the door of the serving car is opened, there is no unpleasant odor and no odor of other foods is attached.

[0004]

However, in the serving car disclosed in the above-mentioned conventional Japanese Patent Application Laid-Open No. Hei 9-135731, if the ozone generator is operating when the door is opened, the smell of ozone is felt. There was a case. In addition, the ozone suppression concentration at the time of worker's work (work environment) at food processing factories and the like is specified as 0.1 ppm or less for worker's safety. Prevention Association). A first object of the present invention is to provide a warning to a person entering a room when the ozone concentration in a predetermined space is equal to or higher than a predetermined value, or to lock a door, thereby opening or closing the door. It is an object of the present invention to provide a sterilizer using ozone, which can prevent the occurrence of odors. A second object of the present invention is to automatically reduce the ozone concentration to less than a predetermined value when an entrance or exit of a predetermined space is opened or a door is opened, or when entering a predetermined space, so that a person entering the room or the like smells of ozone. To provide a sterilizer using ozone, which does not make the user feel unpleasant. A third object of the present invention is to sterilize the predetermined space with ozone when no person is present in the predetermined space,
When a person is present in a predetermined space, sterilized clean air can be supplied to the predetermined space to suppress the growth of various bacteria,
An object of the present invention is to provide a sterilizer using ozone.

[0005]

The invention according to claim 1 is
As shown in FIG. 1, an ozonizer 11 for generating ozone
A predetermined space 12a to be sterilized by ozone, and a supply pipe 36 for connecting and connecting the outlet of the ozonizer 11 to the predetermined space 12a. A supply means 13 for introducing the ozone into the ozoneizer 11; a first ozone eraser 41 provided in the supply pipe 36 between the ozonizer 11 and the predetermined space 12a for decomposing ozone; and a supply pipe 36 bypassing the first ozone eraser 41. Pipe connected to the first ozone eraser 41 or the bypass pipe 4
A switching valve 44 for switching to one of the three types;
An ozone sterilization apparatus comprising: a second ozone eraser 42 that decomposes ozone and is provided in a discharge unit 14 that discharges air or air containing ozone in the predetermined space 12a. Ozonizer 11
The switching valve 44 is switched so as to guide the air containing ozone generated in the above to the bypass pipe 43, and the air containing ozone generated in the ozonizer 11 is guided to the first ozone eraser 44 when the predetermined space 12a is not sterilized. The valve 44 is switched.

In the sterilizing apparatus using ozone according to the first aspect, when no person is present in the predetermined space 12a, the switching valve 44 is switched to guide the air containing ozone to the predetermined space 12a through the bypass pipe 43. , Predetermined space 12
Sterilize a with ozone. On the other hand, when a person is present in the predetermined space 12a, the switching valve 44 is switched to allow the air containing ozone to pass through the first ozone eraser 41 to the predetermined space 1a.
2a, and supplies sterilized clean air to a predetermined space 12a.

The invention according to claim 2 is the invention according to claim 1, and further includes a predetermined space 12a as shown in FIG.
Tent 12, an alarming means 49 provided outside the entrance 17a of the tent 12 and issuing an alarm, an internal ozone sensor 52 for detecting the ozone concentration in the predetermined space 12a, and a person in front of the entrance 17a. It further comprises a human shadow sensor 51 for detecting the presence / absence and a controller 54 for controlling the switching valve 44 and the alarm means 49 based on the detection outputs of the internal ozone sensor 52 and the human shadow sensor 51, respectively. In the ozone sterilizing apparatus according to the second aspect, the internal ozone sensor 52 detects that the ozone concentration in the tent 12 is equal to or higher than a predetermined value, and detects that a person is present immediately outside the entrance 17a. When the sensor 51 detects, the controller 54 switches the switching valve 44 to guide the air containing ozone to the first ozone eraser 41 based on the detection outputs, and activates the alarm means 49.

The invention according to claim 3 is the invention according to claim 1, and further includes a predetermined space 82a as shown in FIG.
And a locker 82 or
Or locking means 90 for locking the door 89 of the box-shaped luggage compartment.
An internal ozone sensor 52 for detecting the ozone concentration in the predetermined space 82a, and a controller 5 for controlling the locking means 90 based on the detection output of the internal ozone sensor 52.
4 is further provided. In the ozone sterilizer according to the third aspect, when the internal ozone sensor 52 detects that the ozone concentration in the locker 82 or the box-shaped carrier is equal to or higher than a predetermined value, the controller 54 locks based on the detection output. Activate the means 90 to lock the door 89.

The invention according to claim 4 is the invention according to claim 3, further comprising an alarm means 49 provided outside the locker 82 or the door 89 of the box-shaped carrier, as shown in FIG.
The presence / absence of a person in front of the door 89 is detected by the human shadow sensor 51, and the controller 54 controls the alarm unit 49, the lock unit 90, and the switching valve 44 based on the detection outputs of the internal ozone sensor 52 and the human shadow sensor 51, respectively. It is characterized by having been constituted so that. In the ozone sterilization apparatus according to the fourth aspect, when the internal ozone sensor 52 detects that the ozone concentration in the locker 82 or the box-shaped carrier is equal to or higher than a predetermined value, the controller 54 operates the locking means 90, In this state, when the human shadow sensor 51 detects the presence of a person immediately before the outside of the door 89, the controller 54 activates the alarm means 49 and switches the switching valve 44 so as to guide the air containing ozone to the first ozone eraser 41. Switch.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a first embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 3, a sterilizer 10 of the present invention includes an ozonizer 11 for generating ozone.
A predetermined space 12a to be sterilized by the ozone;
A supply unit 13 for introducing the ozone together with the air into the predetermined space 12a, and a discharging unit 14 for discharging the air in the predetermined space 12a or the air containing ozone are provided.
The predetermined space 12a is formed in the tent 12 in this embodiment, and the tent 12 includes a frame 15 assembled in a rectangular parallelepiped shape by a metal pipe, an upper sheet 16 covering the upper surface and the peripheral surface of the frame 15, and It consists of side seats 17 and 18. The upper sheet 16 and the side sheets 17 and 18 are made of air-tight and flexible vinyl or cloth. An entrance 17a is formed in one of the side sheets 17, and the entrance 17a is openably closed by an opening / closing sheet 19. The hook-and-loop fasteners 21 and 22 are provided at the periphery of the entrance 17a and the periphery of the opening / closing sheet 19.
2 are provided, and the opening / closing sheet 19 is provided with the hook-and-loop fastener 2.
The entrance 17a is maintained in a closed state by the entrances 1 and 22. Further, a table 23 is arranged in the tent 12, and a tray 24 on which fresh foods and the like are placed is placed on the table 23.
Is placed. These fresh foods and the like are processed in a tent 12 by an operator. Note that a plurality of shelves may be arranged in the tent, and fresh foods, bedding such as futons and mats used in hospitals and the like may be placed on these shelves.

As shown in detail in FIGS. 2 and 3, the ozonizer 11 has a cylindrical body 26 inserted through a housing 25, a cylindrical external electrode 27 fitted into the cylindrical body 26, and a gap between the cylindrical body 26. The internal electrode 28 inserted in a state of being attached or in close contact with the insulating bobbin 29 loosely fitted to the external electrode 27
And a primary coil 31 wound around an insulating bobbin 30 loosely fitted to the secondary coil 32. The cylindrical body 26 is formed of an electrically insulating material such as ceramic, glass, resin or the like to a thickness of about 0.8 to 1.5 mm, and the external electrodes 27 and the internal electrodes 28 are made of stainless steel, aluminum, aluminum alloy, graphite, colloidal carbon. And the like. The external electrode 27 is formed with a Faraday slit 27a extending in the axial direction in order to prevent generation of eddy current during use. In this embodiment, the internal electrode 28 is formed in a tubular shape by a wire mesh. However, the internal electrode 28 may be formed in a spiral shape or by connecting a plurality of axially extending linear members at predetermined intervals in a circumferential direction. The ring member may be formed in a cylindrical shape, or a plurality of ring members extending in the circumferential direction may be formed in a cylindrical shape at predetermined intervals in the axial direction. That is, the internal electrode 28 is formed in a shape in which streamer discharge or corona discharge easily occurs.

The winding start terminal 32a of the secondary coil 32 is connected to the external electrode 27, and the winding end terminal 3a of the secondary coil 32
2b is connected to the internal electrode 28. The primary coil 31
Is connected to a high frequency power supply 34 via a switch 33.
In addition, by adjusting the number of turns of the primary coil 31 and the secondary coil 32, a frequency (for example, 200 kHz) suitable for generating a streamer discharge or the like between the coils 31 and 32.
In z), resonance can be generated. At this time, the frequency of the high frequency power supply 34 is set to a relatively low frequency (for example, 2 k
Hz to 10 kHz), the secondary coil 32 has a frequency (for example, 2 Hz) suitable for generating the above-described streamer discharge or the like.
00 kHz) can be generated, and high frequency leakage to the outside can be prevented.

Returning to FIG. 1, in the center of the upper sheet 16
Is formed with a supply port 16a. Supply means 13
Supply that connects the outlet of the device 11 to the supply port 16a.
Tube 36 and an air pump for introducing air into the ozonizer 11
37. Discharge port of air pump 37 and ozonizer
The air inlet pipe 38 communicates with the inlet 11.
Supply pipe 36 between the ozonizer 11 and the supply port 16a
Is equipped with a first ozone eraser 41 that decomposes ozone
It is. This ozone eraser 41 is allophane (amorphous viscous
Earth minerals: hydrous silicic acid including mixed gel of alumina silicate
Alumina, Al _TwoO_Three・ SiO_Two・ NH_TwoO), activated carbon, ze
Hani of olites, titania, zirconia, magnesia, etc.
In the form of a cam, pellet or granule carrier, iron, copper, silver,
Manganese, cobalt, panadium, chromium, titanium, etc.
Supports metal oxides (preferably metal dioxides)
Formed. This ozone eraser 41 is used to
The zon can be efficiently decomposed into oxygen.

The supply pipe 36 has a first ozone eraser 4.
A bypass pipe 43 for bypassing the bypass pipe 1 is connected to the supply pipe 36 and a branch portion between the supply pipe 36 and the bypass pipe 43. The switching valve 44 switches the air containing ozone to either the first ozone eraser 41 or the bypass pipe 43. Is provided.
The switching valve 44 is a three-way two-position switching electromagnetic valve. When the switching valve 44 is turned on, the switching valve 44 guides the air containing ozone to the bypass pipe 43, and when turned off, switches the air containing ozone to the first ozone eraser 41. A discharge port 18a is formed below the other side sheet 18. The discharge means 14 is a blower 4
6 and a discharge pipe 47 for connecting and connecting the suction port of the blower 46 and the discharge port 18a. A second ozone eraser 42 for decomposing ozone contained in air is provided in the discharge pipe 47.
Is provided. The ozone eraser 42 has the same configuration as the first ozone eraser 41. The supply pipe 36, the air introduction pipe 38, the bypass pipe 43, and the discharge pipe 47
Is formed by a resin or metal pipe or duct. Reference numeral 48 in FIG. 1 denotes an air filter for removing dust contained in the air introduced into the air introduction pipe 38.

On the other hand, on the upper part of the frame 15 on the side of the entrance 17a of the tent 12, an alarm means 49 for issuing an alarm to the outside of the entrance 17a, and a human shadow sensor 51 for detecting the presence or absence of a person immediately outside the entrance 17a are provided. Tent 12
Inside the tent 12, an internal ozone sensor 52 for detecting the ozone concentration in the tent 12 is provided. Near the lower portion outside the tent 12, an external ozone sensor 53 for detecting the ozone concentration leaked from the tent 12 is provided. The detection outputs of the human shadow sensor 51, the internal ozone sensor 52, and the external ozone sensor 53 are connected to the control input of the controller 54, and the control output of the controller 54 is connected to the switching valve 44 and the alarm means 49, respectively. The alarm means 49 is configured by a speaker that emits an alarm sound, and the human shadow sensor 51 is configured by a monitoring camera or an optical sensor. The alarm unit 49 detects when the human shadow sensor 51 detects the presence of a person immediately before the outside of the entrance 17a and when the external ozone sensor 53 detects ozone leakage of a predetermined concentration (for example, 0.1 ppm) or more. The sounds are configured to be different. As the internal ozone sensor 52 and the external ozone sensor 53, a metal oxide such as In ₂ O ₃ containing SnO ₂ is used as a sensitive body. In these sensors 52 and 53, the electric resistance of the sensitive body depends on the concentration of ozone contacted. Using the changing phenomenon, the concentration of ozone is detected. A reset switch 56 and an internal monitoring camera 57 are further connected to the control input of the controller 54. The internal monitoring camera 57 detects whether or not a person exists in the tent 12. The air pressure in the tent 12 is maintained at a slightly higher pressure than the atmospheric pressure by adjusting the discharge amount of the air pump 37 and the blower 46.

A method of using the thus constructed ozone sterilizing apparatus 10 will be described. When an operator is cooking fresh food in the tray 24 in the tent 12, the controller 54 outputs the detection output of the internal monitoring camera 57 because the internal monitoring camera 57 detects that there is a person in the tent 12. Based on this, the switching valve 44 is kept off. The air introduced into the air introduction pipe 38 by the air pump 37 passes through the ozonizer 11 after dust is removed by the air filter 48. At this time, the external electrode 2 of the ozonizer 11
A part of air molecules is converted to ozone by corona discharge generated between the inner electrode 7 and the internal electrode 28. The air containing ozone that has passed through the ozonizer 11 flows into the first ozone eraser 41. At this time, the ozone contained in the air is decomposed into oxygen. As a result, dust is removed from the tent 12, and ozone-free and sterilized (sterilized when the ozonizer 11 passes through the high-energy region) clean air is supplied. Propagation of various bacteria can be suppressed.

When cooking in the tent 12 is completed and the worker exits the tent 12 and presses the reset switch 56, the controller 54 turns on the switching valve 44 based on the detection output of the switch 56 and contains ozone. Air is supplied into the tent 12 through the bypass pipe 43. As a result, the ozone concentration in the tent 12 gradually increases. The ozone concentration in the tent 12 depends on the type of bacteria to be killed,
It is kept almost at a predetermined value within the range of 3 to 80 ppm. Specifically, when the ozone concentration is maintained at approximately 10 ppm, the ozone concentration in the tent 12 becomes equal to a first predetermined value (for example, 11 pp).
m), the controller 54 turns off the switching valve 44 and supplies the ozone-free air into the tent 12 when the internal ozone sensor 52 detects that it has exceeded m). On the other hand, the ozone concentration in the tent 12 is a second predetermined value (for example, 9 pp).
m) When the internal ozone sensor 52 detects that it has become less than or equal to the value, the controller 54 turns on the switching valve 44 and supplies air containing ozone into the tent 12. As a result, the ozone concentration in the tent 12 falls within a predetermined range (for example, 9 to 11).
ppm), and the propagation of various bacteria or harmful bacteria in the tent 12 can be prevented, so that the fresh food put in the tray 24 does not spoil and is kept fresh. The harmful bacteria include Escherichia coli, Salmonella, Cholera, O-
157, food poisoning bacteria such as Pseudomonas aeruginosa and Staphylococcus aureus, and molds and yeasts.

Since ozone contained in the air discharged from the discharge port 18a is decomposed into oxygen by the second ozone eraser 42, no ozone is discharged outside the tent 12. When the external ozone sensor 53 detects that the ozone leaks at a predetermined concentration (for example, 0.1 ppm) or more, the controller 54 operates the alarm means 49 based on the detection output. Tent 1 that heard this warning
The second worker knows that an abnormality has occurred in the sterilizer 10 and takes appropriate measures such as repairing the sterilizer 10.

On the other hand, when the worker stands right before the entrance 17a to work again in the tent 12, the human shadow sensor 51 detects that there is a person just outside the entrance 17a. The alarm means 49 is operated based on the detection output of the sensor 51, and the switching valve 44 is turned off. The worker hears the warning and knows that the ozone concentration in the tent 12 is equal to or higher than a predetermined value (for example, 0.005 to 0.02 ppm) at which an ozone smell is felt, and waits without entering the tent 12. When the controller 54 turns off the switching valve 44, the tent 12
Inside the tent 12 is supplied with sterilized clean air containing no ozone at all, and at the same time, the air containing ozone in the tent 12 is discharged by the discharging means 14, so that the ozone concentration in the tent 12 decreases quickly. . After a while, a predetermined value (for example, 0.0
Since the controller 54 detects the ozone concentration of less than 0.05 to 0.02 ppm) and stops the warning means 49, the worker knows that it is possible to enter the tent 12.
Even if the worker enters the tent 12 in this state, he does not feel the smell of ozone, and the worker can work in the tent 12 to which clean air is supplied.

FIG. 4 shows a second embodiment of the present invention.
4, the same reference numerals as those in FIG. 1 indicate the same parts. In this embodiment, the tent 72 has no frame and the ceiling 7
The configuration is the same as that of the first embodiment except that it is of a type that is suspended from 3 through a wire 74.
In the thus configured ozone sterilizer 70,
Since the tent 72 has no frame, the tent 72 can be stretched in an extremely short time, and the tent 72 can be stored in an extremely small space. The method of use and operation of the sterilization device other than those described above are substantially the same as those of the first embodiment, and a repeated description thereof will be omitted.

FIG. 5 shows a third embodiment of the present invention.
5, the same reference numerals as those in FIG. 1 indicate the same parts. In this embodiment, a predetermined space 82a is formed in the locker 82. A supply port 86 is provided at the center of the upper wall 86 of the locker 82.
a is formed on one side wall 87, and an entrance 87 a is formed on one side wall 87, and a discharge port 88 a is formed below the other side wall 88. The entrance 87a is openably closed by a door 89, and the door 89 is provided with a lock means 90 for locking the door in a closed state. An internal ozone sensor 52 is provided in the locker 82, and an alarm unit 49 and a human shadow sensor 51 are provided on one side wall 87. Each detection output of the internal ozone sensor 52 and the human shadow sensor 51 is connected to a control input of the controller 54, and a control output of the controller 54 is connected to the switching valve 44, the lock means 90, and the alarm means 49. The discharge means 84 is provided below the locker 82 and has a discharge duct 92 for communicating a predetermined space 82a in the locker 82 with the discharge port 88a.
A second ozone eraser 42 provided in the discharge duct 92, and a fan 91 provided in the discharge duct 92 downstream of the second ozone eraser 42 to discharge air or air containing ozone in a predetermined space 82a. Having. Reference numeral 93 in FIG. 5 is an opening / closing sensor that detects opening / closing of the door 89.
Further, a plurality of shelves 9 are provided in a predetermined space 82a in the locker 82.
4, and beddings 96 such as futons and mats used in hospitals and the like are placed on these shelves 94. Note that trays containing fresh foods may be placed on these shelves. Except for the above, the configuration is the same as that of the first embodiment.

A method of using the thus configured ozone sterilizing apparatus 80 will be described. After the worker places bedding 96 for sterilization on the shelf 94 in the locker 82,
9 is closed and the reset switch 56 is pressed, the controller 54 turns on the switching valve 44 based on the detection outputs of the open / close sensor 93 and the reset switch 56, and passes the air containing ozone into the rocker 82 through the bypass pipe 43. Supply. When the ozone concentration in the locker 82 gradually increases and the ozone concentration in the locker 82 exceeds a predetermined value (for example, 0.005 to 0.02 ppm) at which the smell of ozone is felt, the controller 54 activates the locking means 90 to open the door. Lock 89. Thus, when the ozone concentration is equal to or higher than the predetermined value, the door 89 cannot be opened.
The ozone concentration in the locker 82 varies depending on the type of bacteria to be killed, but is kept at a predetermined value within the range of 3 to 80 ppm. Specifically, when the ozone concentration is maintained at approximately 10 ppm, when the internal ozone sensor 52 detects that the ozone concentration in the locker 82 has become equal to or higher than a first predetermined value (for example, 11 ppm), the controller 54 switches the switching valve 4.
4 is turned off to supply ozone-free air into the locker 82. On the other hand, when the internal ozone sensor 52 detects that the ozone concentration in the rocker 82 has become equal to or less than the second predetermined value (for example, 9 ppm), the controller 54 turns on the switching valve 44 to cause the air containing ozone in the rocker 82. Supply. As a result, the ozone concentration in the locker 82 is kept within a predetermined range (for example, 9 to 11 ppm), and germs and the like attached to the bedding 96 due to the ozone are killed. The ozone contained in the air discharged from the discharge port 88a is decomposed into oxygen by the second ozone eraser 42, so that the ozone is not discharged out of the locker 82.

When a predetermined time has elapsed, the controller 54
Turns off the switching valve 44 and supplies the sterilized clean air containing no ozone into the locker 82, and simultaneously discharges the ozone-containing air in the locker 82 with the discharging means 84.
, The ozone concentration in the locker 82 rapidly decreases. A predetermined value (for example, 0.005 to 0.02 pp) at which the internal ozone sensor 52 does not sense an ozone odor.
m), the controller 54 detects
Turns on a lamp (not shown) to indicate that the sterilization process has been completed, and at the same time, releases the locking means 90. The operator knows that the sterilization process has been completed by turning on the lamp, and opens the door 89 to remove the sterilized bedding 96. At this time, since the ozone concentration in the locker 82 is less than the predetermined value (for example, 0.005 to 0.02 ppm), the odor of ozone is not felt. After removing the sterilized bedding 96, the worker places another bedding 96 to be sterilized on the shelf 94.

On the other hand, if it is desired to open the door 89 during the sterilization process of the bedding 96 (an urgent situation is required), the worker needs to open the door 89.
Stand just outside the outside. At this time, the human shadow sensor 51
The controller 54 activates the warning means 49 based on the detection output of the human shadow sensor 51 and turns off the switching valve 44 because it detects that there is a person immediately before the outside. When the worker hears the alarm, the ozone concentration in the locker 82 becomes a predetermined value (for example, 0.005 to
0.02 ppm) and wait. When the controller 54 turns off the switching valve,
At the same time, sterilized clean air containing no ozone is supplied into the locker, and at the same time, the ozone-containing air in the locker 82 is discharged by the discharge means 84, so that the ozone concentration in the locker 82 decreases quickly. I do. After a while, the internal ozone sensor 52 reads the predetermined value (for example, 0.00
Since the ozone concentration of less than 5 to 0.02 ppm is detected, the controller 54 stops the alarm 49 and releases the lock 90. As a result, the worker can open the door 89 and quickly take out the bedding 96.

In the third embodiment, the predetermined space is formed by the locker. However, the predetermined space may be formed by a box-type carrier mounted on a vehicle. In this case, the fresh food products and the like can be transported to the destination without generating germs and the like in the fresh food products and the like stored in the box-shaped carrier.

[0026]

As described above, according to the present invention, the ozone generated by the ozonizer is introduced into the predetermined space together with air through the supply pipe by the supply means, and the ozone is decomposed into the supply pipe. Ozone eraser is installed and the first
Since a bypass pipe for bypassing the ozone eraser was connected, a switching valve was switched so as to guide air containing ozone to the first ozone eraser or the bypass pipe, and a second ozone eraser for decomposing ozone was provided in the discharge means. When no person is present in the space, the switching valve is switched to guide the air containing ozone to the predetermined space through the bypass pipe, and the predetermined space is sterilized with ozone. As a result, propagation of germs and the like in a predetermined space can be prevented. On the other hand, when a person is present in the predetermined space, the switching valve is switched to guide the air containing ozone through the first ozone eraser to the predetermined space and supply sterilized clean air to the predetermined space. As a result, propagation of germs and the like in a predetermined space can be suppressed.

When the predetermined space is formed by a tent, the internal ozone sensor detects that the ozone concentration in the tent is equal to or higher than a predetermined value, and the presence of a person immediately before the outside of the entrance is recognized by a person. When the sensor detects, the controller switches the switching valve to guide the air containing ozone to the first ozone eraser and activates the alarm means. As a result, a person who is immediately outside the entrance upon hearing the warning issued by the warning means knows that the ozone concentration in the tent is equal to or higher than a predetermined value, and temporarily stops entering the tent. On the other hand, the tent is supplied with sterilized clean air containing no ozone at all, and at the same time, the ozone-containing air in the tent is discharged by the discharging means, so that the ozone concentration in the tent rapidly decreases. . As a result, even if the tent enters the tent when the internal ozone sensor detects an ozone concentration lower than the predetermined value for a while, the odor of ozone is not felt.

When the predetermined space is formed by a locker or a box-shaped carrier, when the internal ozone sensor detects that the ozone concentration in the locker or the box-shaped carrier is equal to or higher than a predetermined value, the controller activates the lock means. Then the door of the locker or box carrier is locked. As a result, it is possible to prevent the door from being opened when the ozone concentration in the locker or the box-shaped carrier is equal to or higher than a predetermined value. Further, when the human shadow sensor detects that there is a person just outside the door and the internal ozone sensor detects that the ozone concentration in the locker or the box-shaped carrier is equal to or higher than a predetermined value, the controller activates the alarm means and the lock means. Then, the switching valve is switched so as to guide the air containing ozone to the first ozone eraser. As a result, the person in front of the door who heard the warning issued by the warning means knows that there is ozone at a predetermined concentration or more in the locker or the box-shaped carrier, and even if the door is opened by mistake, the door is opened. Absent. On the other hand, sterilized clean air that does not contain any ozone is supplied into the locker or the box-shaped carrier, and at the same time, the ozone-containing air in the rocker or the box-shaped carrier is discharged by the discharging means. The ozone concentration in the box-shaped carrier decreases rapidly. As a result, even if the door is opened when the internal ozone sensor detects an ozone concentration lower than the predetermined value for a while, the odor of ozone is not felt.

[Brief description of the drawings]

FIG. 1 is a cross-sectional configuration diagram showing an ozone sterilization apparatus according to a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view showing an ozonizer.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a sectional view showing a second embodiment of the present invention and corresponding to FIG. 1;

FIG. 5 is a cross-sectional configuration diagram corresponding to FIG. 1 showing a third embodiment of the present invention.

[Explanation of symbols]

 10, 70, 80 Sterilizer 11 Ozonizer 12, 72 Tent 12a, 82a Predetermined space 13 Supply means 14, 84 Discharge means 17a, 87a Inlet 36 Supply pipe 41 First ozone eraser 42 Second ozone eraser 43 Bypass pipe 44 Switching valve 49 Warning means 51 Human shadow sensor 52 Internal ozone sensor 82 Locker 89 Door 90 Lock means

 ──────────────────────────────────────────────────続 き Continuation of the front page (71) Applicant 500218862 Hokkaido Electric Technology Service Co., Ltd.Hokkaido Sorachi-gun Minamipporo-cho Minami 15 Line 23 West 23 (72) Inventor Hiroshi Saito ) Inventor Tosohara Koso 1-2-17-1 Kita 39 Higashi-ku, Higashi-ku, Sapporo, Hokkaido Inside Chuo Nameplate Manufacturing Co., Ltd. F term in the company central name plate mill (reference) 4C058 AA02 AA23 BB07 CC10 DD01 DD16 EE01 EE26 JJ14 JJ28 4C080 AA07 BB05 HH02 KK02 LL02 MM08 QQ11 4G042 CA01 CC03 CE02

Claims (4)

[Claims] An ozonizer (11) for generating ozone, a predetermined space (12a, 82a) sterilized by the ozone, an outlet of the ozonizer (11) and the predetermined space (12a, 82a).
And a supply pipe (36) communicating the ozone with the air through the supply pipe (36) together with air to the predetermined space (12a, 82
a) a supply means (13) for introducing the ozone into the supply pipe (36) between the ozonizer (11) and the predetermined space (12a, 82a);
An ozone eraser (41), and the supply pipe bypassing the first ozone eraser (41).
A bypass pipe (43) connected to the (36), and a switching valve (44) for switching the air containing the ozone so as to guide the air to the first ozone eraser (41) or the bypass pipe (43). A second ozone eraser (42) provided in a discharging means (14, 84) for discharging air or ozone-containing air in the predetermined space (12a, 82a), and a sterilizing apparatus using ozone provided with a second ozone eraser (42). The ozonizer (1) during sterilization of the predetermined space (12a, 82a).
The switching valve (44) is switched so as to guide the air containing ozone generated in 1) to the bypass pipe (43), and the ozonizer is not sterilized in the predetermined space (12a, 82a).
A sterilization apparatus using ozone, wherein the switching valve (44) is switched so as to guide the air containing ozone generated in (11) to the first ozone eraser (41). 2. A tent (12, 7) forming a predetermined space (12a).
2), an alarm means (49) provided outside the entrance (17a) of the tent (12, 72) and issuing an alarm, and an internal ozone sensor (52) for detecting an ozone concentration in the predetermined space (12a). A human shadow sensor (51) for detecting the presence or absence of a person immediately outside the entrance (17a), and a switching valve (44) based on each detection output of the internal ozone sensor (52) and the human shadow sensor (51). And a controller (54) for controlling the alarm means (49), respectively.
A sterilizer using ozone as described. 3. A locker (8) forming a predetermined space (82a).
2) or box-shaped carrier, locking means (90) for locking the locker (82) or the door (89) of the box-shaped carrier, and an internal ozone sensor for detecting an ozone concentration in the predetermined space (82a). The ozone sterilizer according to claim 1, further comprising: (52); and a controller (54) for controlling the locking means (90) based on a detection output of the internal ozone sensor (52). 4. An alarm means (49) is provided outside the door (89) of the locker (82) or the box-shaped carrier, and a human shadow sensor (51) detects the presence or absence of a person immediately outside the door (89). And the controller
(54) is configured to control the alarm means (49), the locking means (90), and the switching valve (44) based on each detection output of the internal ozone sensor (52) and the human shadow sensor (51), respectively. Claim 3
A sterilizer using ozone as described.