JP2008178479A - Sterilization gas infiltration device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus capable of highly efficiently executing a sterilization treatment of a sterilization treatment object in which gas infiltrates poorly in the sterilizing gas infiltration apparatus by sterilizing gas. <P>SOLUTION: This sterilizing gas infiltration apparatus is provided with a sterilization chamber 1 for storing the sterilization treatment object therein, and a mechanism for infiltrating the sterilizing gas into the sterilization treatment object into which gas infiltrates poorly; and is further provided with a mechanism capable of producing a pressure difference between the inside and outside of the sterilization chamber 1 by fluctuating the pressure by exhausting ambient gas in the sterilization chamber 1. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a sterilization gas permeation apparatus that allows a sterilization gas such as ozone gas to permeate an object to be sterilized such as bedding.

Conventionally, in methods for sterilizing and sterilizing nursing care / medical institutional equipment and bedding, for heat-resistant objects to be sterilized, water is heated by a heater or the like to generate steam, and atmospheric pressure There is a method using a high-pressure steam sterilizer that sterilizes with saturated steam under a pressure exceeding (see Patent Document 1). Further, there is a method of sterilizing an object to be sterilized without heat resistance by infiltrating ethylene oxide (EOG) gas.
Japanese Patent Laid-Open No. 6-190024

  However, the above-described method using high-pressure steam sterilization cannot be applied to an object to be sterilized without heat resistance. Also, in the method of sterilizing by infiltrating ethylene oxide gas, it is necessary to leave for a long time or deaerate process in order to degas the residual gas after treatment. There are problems in terms of safety and sterilization efficiency, such as the need for a processing device. In addition, when the gas treatment is performed under normal pressure, there is a problem that the object to be sterilized, such as bedding, which is difficult to permeate gas cannot be sterilized efficiently.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

  That is, in claim 1, in a sterilization gas infiltration apparatus having a sterilization chamber for storing an object to be sterilized inside, and a mechanism for infiltrating sterilization gas into an object to be sterilized in which gas is difficult to penetrate inside, A mechanism capable of changing the pressure in the sterilization chamber to a negative pressure and a positive pressure is provided.

  In a sterilization gas penetration device which has a mechanism which makes a sterilization gas penetrate to a sterilization processing subject to which gas is difficult to penetrate inside, and a sterilization gas penetration device which stores a sterilization processing subject inside A mechanism for controlling the internal pressure in a range from negative pressure to normal pressure is provided.

  According to a third aspect of the present invention, the sterilizing gas is ozone gas.

  According to a fourth aspect of the present invention, the sterilizing gas is stabilized chlorine dioxide.

  According to a fifth aspect of the present invention, in the sterilizing gas infiltration device according to the third aspect, when ozone gas permeates the object to be sterilized, a mechanism for spraying water into the sterilization cabinet is provided.

  According to a sixth aspect of the present invention, in the sterilizing gas infiltration device according to the third aspect, when ozone gas permeates the object to be sterilized, a mechanism for spraying oxidation promotion water simultaneously in the sterilization chamber is provided.

  In claim 7, the sterilization chamber for storing the object to be sterilized therein, the mechanism for allowing the sterilization gas to permeate the object to be sterilized which is difficult for gas to penetrate inside, and the sterilization gas in the sterilization chamber are rendered harmless In a sterilization gas infiltration device using ozone gas having a mechanism for exhausting the exhaust gas, a mechanism for detecting the ozone concentration outside the sterilization chamber and the ozone concentration inside the sterilization chamber with a single ozone concentration measurement device, and based on the detection result A mechanism for controlling the ozone concentration, and a mechanism for displaying information on the detected ozone concentration.

  In claim 8, in the sterilization gas infiltration device according to claim 3, a mechanism for detecting the ozone concentration outside the sterilization chamber and the ozone concentration inside the sterilization chamber with one ozone concentration measuring device, and the detection result A mechanism for controlling the ozone concentration based on this and a mechanism for displaying information on the detected ozone concentration are provided.

  According to a ninth aspect of the present invention, in the sterilization gas infiltration device according to any one of the first to eighth aspects, a sensor for detecting a person is provided in the sterilization chamber.

  As effects of the present invention, the following effects can be obtained.

  In claim 1, by providing a pressure difference between the inside and the outside of the sterilization chamber, the sterilizing gas can be permeated into every object to be sterilized such as bedding where the sterilizing gas is difficult to permeate.

  In Claim 2, by adding the fluctuation | variation in the pressure in the range of a negative pressure to a normal pressure in the sterilization chamber, while being able to penetrate | infiltrate sterilization gas to every corner of the to-be-sterilized processing object, For bacteria attached to the surface, the environmental conditions can be changed and the bactericidal effect can be improved.

  According to the third aspect of the present invention, the sterilizing gas permeation apparatus uses ozone as the sterilizing gas. The same effect can be obtained in a short time as compared with the conventional sterilizing gas, and the running cost can be reduced.

  In claim 4, the sterilizing gas infiltration device uses stabilized chlorine dioxide as the sterilizing gas, and the same effect can be obtained in a shorter time than the conventional sterilizing gas, and the running cost can be reduced. .

  In Claim 5, radicals, such as active oxygen, can be produced | generated by reaction of ozone gas and water in a sterilization chamber, and also a sterilization effect can be improved.

  In Claim 6, radicals, such as active oxygen, can be produced | generated by reaction of ozone gas and oxidation promotion water in a sterilization chamber, and also a sterilization effect can be improved.

  In claim 7, the sterilization operation can be performed safely.

  In claim 8, the sterilization operation can be performed safely.

  According to the ninth aspect, since the presence or absence of a person can be confirmed during the sterilization process by the human detection sensor provided in the sterilization chamber, the sterilization process can be performed safely.

Next, embodiments of the invention will be described.
FIG. 1 is a schematic configuration diagram of a sterilizing gas infiltration device showing Example 1 of the present invention, FIG. 2 is a schematic configuration diagram of a sterilizing gas infiltration device showing Example 2 of the present invention, and FIG. 3 is Example 3 of the present invention. 4 is a schematic configuration diagram of a sterilization gas permeation apparatus, FIG. 4 is a schematic configuration diagram of a sterilization gas permeation apparatus showing a fourth embodiment of the present invention, and FIG. 5 is a schematic configuration diagram of a sterilization gas permeation apparatus showing a fifth embodiment of the present invention. is there.

First, the whole structure of the sterilization gas infiltration apparatus which is one Example of this invention is demonstrated with reference to FIG.
As shown in FIG. 1, the sterilizer 1 is a sterilization gas storage body, and sterilizer doors 2 are provided on both sides of the sterilizer 1 to be used when an object to be sterilized is installed and taken out. It has been. The sterilizer door 2 may be provided on one side of the sterilizer 1. The sterilizing gas generator 3 is communicated with the sterilization chamber 1 via the electromagnetic switching valve 20 via a pipe. The air filter 6 is communicated with the sterilization chamber 1 via a solenoid switching valve 17 by piping or the like. The exhaust device 7 is connected to the sterilizer 1 and the exhaust port 10 via a check valve 8, a sterilizing gas detoxifying device 9, and an electromagnetic switching valve 18, respectively, via piping and the like. Examples of the exhaust device 7 include a vacuum pump. The pressure measuring device 15 is connected to a pressure sensor 21 installed in the sterilizer 1. The electromagnetic switching valves 17, 18 and 20 can be opened and closed by manual operation, and the sterilizing gas generator 3 and the exhaust device 7 can be turned on and off by manual operation.

Next, the operation of the above configuration will be described.
First, the object to be sterilized is stored in the sterilizer 1, the door 2 is closed, and the sterilizer 1 is sealed. Next, all the solenoid switching valves except the exhaust solenoid switching valve 18 are closed, the exhaust device 7 is operated, the atmosphere gas in the sterilizer 1 is exhausted, and the interior is in a low vacuum state (-50 kPa to -20 kPa). And Next, in the sterilization gas generator 3, a sterilization gas such as ozone gas is generated by a sterilization gas mechanism such as silent discharge, and is sent to the sterilization chamber 1 via the electromagnetic switching valve 20. Since the injected sterilization gas is in a low vacuum state in the sterilization chamber 1, the sterilization gas 1 sufficiently penetrates into the object to be sterilized and is sterilized throughout. Next, the sterilized residual sterilized gas is exhausted by the exhaust device 7 through the electromagnetic switching valve 18, the sterilizing gas detoxifying device 9, and the check valve 8. Next, the exhaust device 7 is operated to bring the inside of the sterilizer 1 into a vacuum state, and then the electromagnetic switching valve 17 is opened and the atmospheric gas is injected into the sterilizing chamber 1 through the air filter 6 and the electromagnetic switching valve 17. To do. Thereby, the sterilization gas remaining in the cabinet is diluted. Next, the electromagnetic switching valve 17 is closed and the exhaust device 7 is operated again, and the diluted sterilizing gas is processed into a safe gas and exhausted through the sterilizing gas detoxifying device 9. This is repeated a predetermined number of times, and all the residual sterilization gas in the sterilizer 1 is exhausted. Thereafter, the sterilization door 2 is opened, and the object to be sterilized is taken out.

  Thus, in the sterilization gas permeation apparatus having the sterilization chamber 1 for storing the object to be sterilized inside and the mechanism for allowing the sterilization gas to penetrate into the object to be sterilized which gas is difficult to permeate therein, the sterilization chamber 1 By providing a mechanism that can vary the internal pressure to negative pressure (pressure lower than atmospheric pressure) and positive pressure (pressure higher than atmospheric pressure), a pressure difference can be provided between the inside and outside of the sterilizer 1. The sterilizing gas can be permeated throughout the object to be sterilized, such as bedding, which is difficult to infiltrate the sterilizing gas.

Next, Example 2 will be described with reference to FIG.
The overall configuration of the sterilizing gas permeation apparatus shown in the second embodiment is obtained by adding some devices and piping to the entire configuration shown in the first embodiment, and is provided with a control circuit 30, an operation means 34, and a display means 16. ing. The electromagnetic switching valves 17, 18, 20, the sterilizing gas generator 3, the exhaust device 7, the pressure measuring device 15, the operation means 34, and the display means 16 are connected to the control circuit 30. The control circuit 30 includes a central processing unit (CPU), a storage device (RAM or ROM), an interface, and the like, and a control program described later is stored in the ROM.

  First, as in the first embodiment, the object to be sterilized is stored in the sterilizer 1, the door 2 is closed, and the sterilizer 1 is sealed. When the operation means 34 such as a switch is turned on, the display means 16 displays that sterilization is in progress, and the control circuit 30 performs the next control. That is, all the electromagnetic switching valves except the exhaust electromagnetic switching valve 18 are closed, and then the exhaust device 7 is operated to reduce the pressure in the sterilizer 1 to the set pressure (−50 kPa to −20 kPa). This pressure is detected by the pressure sensor 21. After depressurization, the exhaust electromagnetic switching valve 18 is closed, the electromagnetic switching valve 20 is opened, the sterilizing gas generator 3 is operated, and the sterilizing gas injection process is performed. When the pressure detected by the pressure sensor 21 returns to near atmospheric pressure, the electromagnetic switching valve 20 is closed, the sterilization gas generating device 3 is stopped, the exhaust electromagnetic switching valve 18 is opened, and the exhaust device 7 is operated. When the pressure is reduced to the set pressure, the exhaust device 7 is stopped, the electromagnetic switching valve 18 is closed, and the injection process is performed again. This process is repeated as many times as necessary. At this time, the exhaust, the number of injections, the amount of sterilization gas to be injected, etc. are set according to the size of the sterilizer and the required sterilization effect. Next, after the sterilization step is completed, the electromagnetic switching valve 17 is opened, the atmospheric gas is injected into the sterilization chamber 1 from the air filter 6, the sterilization gas remaining in the chamber is diluted, and the pressure is reduced to near atmospheric pressure. When it rises, the electromagnetic switching valve 17 is closed and the exhaust device 7 is operated again, and the diluted sterilization gas is processed into a safe gas and exhausted through the sterilization gas detoxification device 9. This sterilization gas exhausting process is repeated a predetermined number of times to exhaust all residual sterilization gas in the sterilization chamber 1. When this sterilizing gas exhausting process is finished, the display means 16 displays that effect, opens the sterilization cabinet door 2 and takes out the object to be sterilized.

  Thus, in the sterilization gas permeation apparatus having the sterilization chamber for storing the object to be sterilized inside and the mechanism for allowing the sterilization gas to penetrate into the object to be sterilized which is difficult for gas to permeate therein, By providing a mechanism that controls the pressure in the range of fluctuation from negative pressure to normal pressure, the process can be automatically repeated as many times as necessary to infiltrate the sterilization gas throughout the object to be sterilized. Thus, the environmental conditions of the bacteria attached to the object to be sterilized are changed, and the sterilization effect can be improved efficiently.

  Examples of the gas used as the sterilizing gas in Example 1 and Example 2 include gases having a high sterilizing effect such as ozone gas and stabilized chlorine dioxide. However, the gas is not particularly limited, and the difference in the sterilizing effect depending on the type of gas. It is possible to appropriately select and use in consideration of the sterilization time, running cost, and the like.

Next, Example 3 will be described with reference to FIG.
The overall configuration of the sterilizing gas permeation apparatus shown in the third embodiment is obtained by adding some devices and piping to the entire configuration shown in the second embodiment and using ozone gas as the sterilizing gas. A hydrogen water storage tank 4 is provided. The water storage tank 4 is communicated with the sterilizer 1 through a supply water pump 5, an electromagnetic switching valve 22, and a nozzle 12. Instead of the water storage tank 4, a water or hydrogen peroxide water storage tank 13 having a humidifier 14 may be installed in the sterilizer 1. The feed water pump 5, the electromagnetic switching valve 22, and the humidifying device 14 are connected to the control circuit 30. The control circuit 30 includes a central processing unit (CPU), a storage device (RAM or ROM), an interface, and the like, and a control program described later is stored in the ROM.

Next, sterilization control will be described. The sterilization gas injection step is performed after the object to be sterilized is stored in the sterilization chamber 1 as in the second embodiment. At the same time, the feed water pump 5 is operated to spray the water in the water storage tank 4 or the hydrogen peroxide solution into the sterilizer 1 from the nozzle 12 in the form of a mist. When the water storage tank 13 is installed instead of the water storage tank 4, the water in the water storage tank 13 or the hydrogen peroxide solution is atomized by the humidifier 14 and sprayed into the sterilizer 1. However, what sprays water or hydrogen peroxide water in the form of a mist is not limited to the nozzle 12 or the humidifying device 14, but may be a member such as a heater, an ultrasonic atomizer, or a vibrator. Then, when the inside of the sterilizer 1 returns to near atmospheric pressure, the above-described sterilizing gas exhaust process is performed, the inside of the sterilizer 1 is evacuated, and the above-mentioned sterilizing gas injection process and water or hydrogen peroxide solution are supplied again. Process. This process is repeated as many times as necessary. At this time, the exhaust, the number of injections, the amount of sterilization gas to be injected, etc. are set according to the size of the sterilizer and the required sterilization effect.
After the sterilization process is completed, the above-described sterilization gas exhaust process is repeated a predetermined number of times to exhaust all residual sterilization gas in the sterilizer 1. Thereafter, the sterilization door 2 is opened, and the object to be sterilized is taken out.

  Thus, in the sterilizing gas infiltration device in which the sterilizing gas is an ozone gas infiltration device, when ozone gas permeates the object to be sterilized, a mechanism for spraying accelerated oxidized water such as water or hydrogen peroxide water in the form of a mist at the same time Thus, the bactericidal effect can be improved by radicals such as active oxygen generated by the reaction between ozone and water, hydrogen peroxide solution, or the like.

Next, Example 4 will be described with reference to FIG.
The overall configuration of the sterilizing gas infiltration device shown in the fourth embodiment is obtained by adding some devices and piping to the entire configuration shown in the third embodiment, and is provided with an ozone concentration measuring device 11. The ozone concentration measuring device 11 is connected to one port of an electromagnetic switching valve 24, 25 consisting of a three-way valve via piping 42, 43, and the remaining port of the electromagnetic switching valve 24 is electromagnetically switched via piping 41. The valve 23 and a pipe 31 extending to the vicinity of the exhaust port 10 are connected. The remaining port of the electromagnetic switching valve 25 is connected to the exhaust port 10 via a pipe 44 and is connected to the sterilizer 1 via a pipe 45. The electromagnetic switching valve 23 is constituted by a three-way valve, and the remaining ports are connected to a pipe 19 extending in the vicinity of the sterilizer 1, and are connected to the sterilizer 1 via a pipe 40. The electromagnetic switching valves 23, 24, 25 and the ozone concentration measuring device 11 are connected to the control circuit 30. The control circuit 30 includes a central processing unit (CPU), a storage device (RAM or ROM), an interface, and the like, and a control program described later is stored in the ROM.

Next, the control of the fourth embodiment will be described. The process of ozone sterilization is performed in the same manner as in Example 3. Then, during the exhaust of the gas in the sterilization chamber 1 in this sterilization process, the electromagnetic switching valves 23, 24, 25 are switched every predetermined time, and the ozone concentration in the vicinity of the sterilization chamber 1 and the ozone in the vicinity of the exhaust port 10 are switched. The concentration is measured, and the ozone concentration in the sterilizer 1 is measured after the sterilization is completed and before the object to be sterilized is taken out. In this way, safety confirmation is performed.
That is, when the ozone concentration in the vicinity of the sterilizer 1 is measured, the electromagnetic switching valve 23 is switched so that the pipe 19 and the piping 41 communicate with each other, and the electromagnetic switching valve 24 is switched so that the piping 41 and the piping 42 communicate with each other. . Further, the electromagnetic switching valve 25 is switched so that the pipe 43 and the pipe 44 communicate with each other. In this way, the ozone concentration measuring device 11 measures. If ozone concentration above the predetermined value is not detected, ozone sterilization is continued. If an ozone concentration equal to or higher than a predetermined value is detected, it is determined that the leak has occurred, an abnormal instruction is displayed on the display means 16, an alarm is issued, and the sterilization operation is stopped. Then, after confirming that the door 2 is closed, the ozonolysis operation is started.
In the ozone gas exhaust process, when the ozone concentration in the vicinity of the exhaust port 10 is measured, the electromagnetic switching valve 24 is switched so that the pipe 31 and the pipe 42 communicate with each other. Further, the electromagnetic switching valve 25 is switched so that the pipe 43 and the pipe 44 communicate with each other. In this way, the ozone concentration measuring device 11 measures. If an ozone concentration higher than a predetermined value is not detected in the exhaust gas, the ozone exhaust process is continued. If the ozone concentration is detected, the operation is stopped, an alarm is issued, and the display means 16 displays the inspection and replacement of the sterilizing gas detoxifying device.
When the ozone concentration in the sterilizer 1 is measured at the end of the ozone sterilization, the electromagnetic switching valve 23 is switched so that the piping 40 and the piping 41 communicate with each other, and the electromagnetic switching valve 24 communicates with the piping 41 and the piping 42. Switch as follows. The electromagnetic switching valve 25 is switched so that the pipe 43 and the pipe 45 communicate with each other. In this way, the ozone concentration measuring device 11 measures. If the ozone concentration above the predetermined value is not detected, the display means 16 displays that the object to be sterilized may be taken out from the sterilization chamber 1. If an ozone concentration equal to or higher than the predetermined value is detected, an abnormal instruction is displayed on the display means 16 and the process proceeds to the exhaust process.

Thus, in the sterilization gas infiltration device in which the sterilization gas is an ozone gas infiltration device, the ozone concentration outside the sterilization chamber and the inside of the sterilization chamber can be detected by one ozone concentration measurement device 11 by switching the electromagnetic switching valves 23, 24, 25. By providing a mechanism for detecting the ozone concentration of ozone, the ozone concentration can be detected efficiently.
Further, in the sterilizing gas infiltration device in which the sterilizing gas is ozone gas, a mechanism for controlling the ozone concentration based on the detection result and a mechanism for displaying information on the detected ozone concentration are provided. Ozone leakage from the cabinet 1 and ozone leakage due to malfunction of the sterilizing gas detoxifying device 9 and ozone remaining in the sterilizing cabinet 1 at the end of ozone sterilization can be prevented, and sterilization can be performed safely and efficiently. .

Next, Example 5 will be described with reference to FIG.
The overall configuration of the sterilizing gas infiltration apparatus shown in the fifth embodiment is obtained by adding some devices and piping to the entire configuration shown in the fourth embodiment, and is provided with an electromagnetic lock 32 and a sensor 33. The electromagnetic lock 32 is attached to the locking portion of the sterilization door 2. The sensor 33 is installed in the sterilizer 1. Examples of the sensor 33 include an infrared sensor and a fluctuation sensor that can detect a person. The electromagnetic lock 32 and the sensor 33 are connected to the control circuit 30. The control circuit 30 includes a central processing unit (CPU), a storage device (RAM or ROM), an interface, and the like, and a control program described later is stored in the ROM.

  In each of the ozone sterilization and exhaust processes, the sensor 33 installed in the sterilization chamber 1 detects the presence or absence of a person, and if the presence is confirmed, the electromagnetic lock 32 is opened and the sterilization gas generator 3 And stop.

  Thus, in the sterilization gas permeation apparatus in which the sterilization gas is an ozone gas permeation apparatus, the sterilization process can be performed safely by providing the sensor 33 for human detection in the sterilization chamber 1.

  As described above, in a sterilization gas infiltration apparatus having a sterilization chamber for storing an object to be sterilized inside and a mechanism for allowing the sterilization gas to penetrate into an object to be sterilized which gas is difficult to penetrate inside, Since a mechanism that can change the pressure of the gas to negative pressure and positive pressure is provided, a pressure difference can be provided between the inside and outside of the sterilization chamber, and the object to be sterilized such as bedding that is difficult for sterilization gas to penetrate It is possible to infiltrate the sterilizing gas up to a maximum.

  Further, in a sterilization gas infiltration device having a sterilization chamber for storing an object to be sterilized inside and a mechanism for infiltrating the sterilization gas into an object to be sterilized which gas is difficult to penetrate inside, Since a mechanism for controlling the pressure in the range from negative pressure to normal pressure is provided, the pressure in the sterilization chamber is changed in the range from negative pressure to normal pressure, and the sterilization gas penetrates into the object to be sterilized. In addition, the bacteria attached to the object to be sterilized can be changed in environmental conditions, and the sterilizing effect can be improved.

  Further, by using ozone gas as the sterilizing gas, the same effect can be obtained in a short time, and the running cost can be reduced.

  In addition, by using stabilized chlorine dioxide as the sterilizing gas, the same effect can be obtained in a short time as compared with the conventional sterilizing gas, and the running cost can be reduced.

  Further, in the sterilization gas infiltration device using ozone gas, when ozone gas permeates the object to be sterilized, a mechanism for spraying water at the same time in the sterilization chamber is provided. By the reaction, radicals such as active oxygen can be generated, and further the bactericidal effect can be improved.

  Further, in the sterilizing gas infiltration device using ozone gas, when ozone gas permeates the object to be sterilized, a mechanism for spraying oxidation promotion water is provided in the sterilization chamber at the same time. By reaction with hydrogen oxide water, radicals such as active oxygen can be generated, and further the bactericidal effect can be improved.

  In addition, a sterilization chamber for storing the object to be sterilized, a mechanism for allowing the sterilization gas to penetrate into the object to be sterilized which is difficult for gas to penetrate inside, and a mechanism for detoxifying and exhausting the sterilization gas in the sterilization chamber In a sterilization gas infiltration device using ozone gas having a mechanism for detecting the ozone concentration outside the sterilization chamber and the ozone concentration inside the sterilization chamber with one ozone concentration measuring device, and the ozone concentration based on the detection result Since a mechanism for controlling and a mechanism for displaying information on the detected ozone concentration are provided, the ozone concentration is displayed, the sterilization state can be easily understood, and the sterilization operation can be performed safely.

  Moreover, in the sterilization gas permeation apparatus, since a person detection sensor is provided in the sterilization chamber, the presence or absence of a person can be confirmed during the sterilization process by the person detection sensor provided in the sterilization chamber. It can be done safely.

BRIEF DESCRIPTION OF THE DRAWINGS The schematic block diagram of the sterilization gas osmosis | permeation apparatus which shows Example 1 of this invention. The schematic block diagram of the sterilization gas infiltration apparatus which shows Example 2 of this invention. The schematic block diagram of the sterilization gas osmosis | permeation apparatus which shows Example 3 of this invention. The schematic block diagram of the sterilization gas osmosis | permeation apparatus which shows Example 4 of this invention. The schematic block diagram of the sterilization gas infiltration apparatus which shows Example 5 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sterilizer 2 Sterilizer door 3 Sterilization gas generator 4 Water storage tank 7 Exhaust device 9 Sterilization gas detoxification device 10 Exhaust port 11 Ozone concentration measuring device 13 Water storage tank 15 Pressure measuring device 16 Display means 30 Control circuit

Claims (9)

  In a sterilization gas infiltration device having a sterilization chamber for storing an object to be sterilized inside and a mechanism for infiltrating the sterilization gas into an object to be sterilized which is difficult for gas to penetrate inside, a negative pressure is applied to the pressure in the sterilization chamber. And a sterilizing gas permeation apparatus provided with a mechanism capable of changing to a positive pressure.   In a sterilization gas infiltration device having a sterilization chamber for storing an object to be sterilized inside and a mechanism for infiltrating the sterilization gas into an object to be sterilized which is difficult for gas to penetrate inside, a negative pressure is applied to the pressure in the sterilization chamber. A sterilizing gas permeation apparatus provided with a mechanism for controlling in a range from 1 to normal pressure.   The sterilizing gas permeation apparatus according to claim 1 or 2, wherein the sterilizing gas is ozone gas.   The sterilizing gas infiltration device according to claim 1 or 2, wherein the sterilizing gas is stabilized chlorine dioxide.   4. The sterilizing gas infiltration device according to claim 3, further comprising a mechanism for spraying water into the sterilization chamber at the same time when ozone gas permeates the object to be sterilized.   4. The sterilizing gas infiltration device according to claim 3, wherein a mechanism for spraying oxidation promoting water into the sterilization chamber at the same time when ozone gas permeates the object to be sterilized is provided.   A sterilization chamber for storing the object to be sterilized, a mechanism for allowing the sterilization gas to permeate the object to be sterilized which is difficult for gas to penetrate inside, and a mechanism for detoxifying and exhausting the sterilization gas in the sterilization chamber In a sterilization gas infiltration device using ozone gas, a mechanism for detecting the ozone concentration outside the sterilization chamber and the ozone concentration inside the sterilization chamber with one ozone concentration measuring device, and controlling the ozone concentration based on the detection result A sterilizing gas infiltration device provided with a mechanism and a mechanism for displaying information on the detected ozone concentration.   The sterilization gas infiltration device according to claim 3, wherein a mechanism for detecting the ozone concentration outside the sterilization chamber and the ozone concentration inside the sterilization chamber with one ozone concentration measuring device, and controlling the ozone concentration based on the detection result. And a mechanism for displaying information about the detected ozone concentration.   The sterilizing gas infiltration device according to any one of claims 1 to 8, wherein a sensor for detecting a person is provided in the sterilization cabinet.

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