JPWO2019009376A1 - Sterilization treatment device and sterilization treatment method - Google Patents

Abstract

A sterilization treatment device and a sterilization treatment method that do not require accurate measurement of the weight of the sterilization liquid. The sterilization treatment device is an atomization unit for atomizing a sterilization liquid containing an active ingredient, and a supply unit for supplying the sterilization liquid atomized by the atomization unit to a sterilization treatment target space for sterilization treatment. And a relative humidity measuring unit for measuring the relative humidity inside the sterilization target space. The amount of sterilization liquid is supplied to the sterilization treatment target space until the relative humidity becomes equal to or higher than the set value, and then the amount of sterilization liquid is supplied according to the degree of sterilization inside the sterilization treatment target space. The supply of the sterilization solution is controlled so that the supply is performed to the sterilization target space.

Description

  The present invention relates to a sterilization treatment device and a sterilization treatment method for performing sterilization treatment on a space.

  2. Description of the Related Art Conventionally, a method of performing sterilization treatment in a space by atomizing a sterilization liquid containing an active ingredient such as hydrogen peroxide and spraying it into the space has been adopted. In this way, by performing the sterilization treatment in the space, the space can be made into an environment suitable for performing cell culture and the like. In addition, a method of performing sterilization treatment using a sterilization treatment device is used to perform sterilization treatment on a space. By performing the sterilization treatment using the sterilization treatment device, the sterilization liquid can be sprayed into the space while adjusting the spray amount of the sterilization liquid with high accuracy.

  Patent Literature 1 discloses a sterilization treatment device that performs sterilization treatment in a space while accurately adjusting the spray amount of the sterilization liquid using the sterilization treatment device.

JP, 2011-136035, A

  In the sterilization treatment apparatus disclosed in Patent Document 1, the weight of the sterilization solution in the state before use of the apparatus and the state during use is measured, and the difference in weight between before and after use is measured. , The amount of sterilized liquid used up to that point is measured. Based on the measured amount of the sterilized liquid used, whether or not to continue supplying the sterilized liquid is determined. The sterilizing solution is supplied until a predetermined amount of the sterilizing solution is supplied, and as a result, the sterilizing solution can be supplied with high accuracy.

  However, in the sterilization treatment device disclosed in Patent Document 1, in order to supply the sterilization liquid with high accuracy, the weight of the sterilization liquid in the state before use and the state in use is accurate. It is required to be measured. In general, the amount of the sterilized liquid used for the sterilization treatment is often very small, and the weight of the sterilized liquid in the state before the device is used and the state in use is accurately measured. It is difficult to accurately measure the amount of sterilized liquid used from the difference in weight. Therefore, a highly accurate weight measuring device is required to measure the weight of the sterilized liquid, which may increase the manufacturing cost of the sterilization treatment device.

  Therefore, in view of the above circumstances, an object of the present invention is to provide a sterilization treatment apparatus and a sterilization treatment method that do not require accurate measurement of the weight of the sterilization liquid.

  The sterilization treatment apparatus of the present invention is a sterilization solution containing an active ingredient, a state changing unit for atomizing or vaporizing the sterilization liquid, and the sterilization mist or the sterilization liquid in which the sterilization liquid is atomized by the state changing unit Is a sterilizing gas vaporized by the state changing unit, a supply unit that supplies the sterilizing space to perform a sterilizing process, a relative humidity measuring unit that measures the relative humidity inside the sterilizing space, and the relative humidity. Is supplied to the sterilized space in an amount until the sterilized mist or the sterilized gas is supplied to the sterilized space, and then the sterilized space is sterilized in the sterilized space. A control unit for controlling the supply of the sterilized mist or the sterilized gas so that the sterilized mist or the sterilized gas is supplied to the sterilized space.

  In the sterilization treatment apparatus having the above configuration, since the sterilization mist or the sterilization gas in an amount until the relative humidity becomes equal to or higher than the set value is supplied to the sterilization space, the inside of the sterilization space is close to saturation with the active ingredient. It is possible to supply the sterilized mist or sterilized gas until a stable state is reached, and then supply the sterilized mist or sterilized gas in an amount according to the degree of sterilization. When supplying the sterilized mist or the sterilized gas in an amount according to the degree of sterilization, the interior of the sterilized space is in a stable state. A slight change in the supply of sterilized mist or sterilized gas in that state does not significantly affect the sterilization treatment. Therefore, the supply amount of the sterilized mist or the sterilized gas in that state does not need to be measured with high accuracy and does not need to be measured severely. Therefore, a high-accuracy measuring device is not required to measure the supply amount of the sterilized mist or the sterilized gas, and a sterilization processing device having a simple configuration without the high-accuracy measuring device can be provided. .

  Further, the set value may be a value of the relative humidity in which it is determined that the active ingredient in the sterilized liquid is saturated or in a state conforming to saturation inside the sterilized space.

  The active ingredient may be hydrogen peroxide, and the set value may be 70%.

  When the active ingredient is hydrogen peroxide, it can be determined that the relative humidity is 70% and the hydrogen peroxide is almost saturated.

  Further, the amount corresponding to the degree of sterilization may be determined according to the temperature and humidity of the surrounding environment.

  Since the supply amount of the sterilization liquid according to the degree of sterilization is determined according to the temperature and humidity of the surrounding environment, the supply amount of the sterilization liquid can be easily determined.

  Further, the amount according to the degree of sterilization is determined by a test performed in advance for each temperature within a certain range and humidity within a certain range in the surrounding environment. At a temperature lower than the lower limit temperature in the range, and at a humidity higher than the upper limit humidity in the constant range of humidity, the sterilized mist confirmed to be sterilized or The first supply amount of the sterilized gas, at a temperature lower than the lower limit temperature in the constant range for temperature, and when the humidity is lower than the lower limit humidity in the constant range for humidity, A second supply amount of the sterilized mist or the sterilized gas confirmed to be in a sterilized state and a temperature higher than the upper limit temperature in the certain range with respect to temperature. A third supply amount of the sterilized mist or the sterilized gas, which is confirmed to be in a sterilized state, when the humidity is lower than the lower limit of the humidity in the certain range. It is confirmed that when the temperature is higher than the upper limit temperature in the constant range and the humidity is higher than the upper limit humidity in the constant range, it is in a sterilized state. A fourth supply amount of the sterilized mist or the sterilized gas is detected, and the largest supply amount among the detected supply amounts from the first supply amount to the fourth supply amount is It may be determined as an amount according to the degree of sterilization.

  In the sterilization treatment device having the above configuration, without using a complicated formula, it is possible to perform the sterilization treatment reliably for the temperature within a certain range and the humidity within a certain range in the surrounding environment, the degree of sterilization The amount of sterilized mist or sterilized gas supplied to the interior of the sterilized space can be determined according to the above. Therefore, a high-performance control unit is not required to control the amount of sterilized mist or sterilized gas supplied to the interior of the sterilized space according to the degree of sterilization, which reduces the manufacturing cost of the sterilized treatment device. It can be kept low.

  Further, the sterilization treatment apparatus of the present invention is a state changing unit for atomizing or vaporizing a sterilizing liquid containing an active ingredient, and the sterilizing mist or the sterilizing liquid in which the sterilizing liquid is atomized by the state changing unit. A supply unit for supplying a sterilized gas whose liquid is vaporized by the state changing unit to a sterilized space for performing a sterilization process, and a sensor for detecting whether or not the active ingredient is saturated inside the sterilized space. Section and the sensor section supplies the sterilized mist or the sterilized gas to the sterilized space until it is detected that the active ingredient is saturated, and thereafter, in the sterilized space. A control unit that controls the supply of the sterilized mist or the sterilized gas so as to supply the sterilized mist or the sterilized gas in an amount according to the degree of sterilization to the sterilized space. It is characterized by that.

  In the sterilization treatment device configured as described above, whether or not the inside of the sterilization space is saturated with the active ingredient of the sterilization liquid is directly detected, and after the saturation is confirmed, the degree of sterilization is changed. Since a large amount of sterilization liquid is supplied to the sterilization space, the inside of the sterilization space will be saturated with the effective components of the sterilization liquid when supplying the volume of sterilization liquid according to the degree of sterilization. It is possible to more surely determine whether or not it is. Since the sterilization liquid is supplied in an amount according to the degree of sterilization while the sterilization space is surely saturated with the active ingredient of the sterilization liquid, the sterilization treatment can be performed more reliably.

  The sterilization treatment method of the present invention, until the relative humidity inside the sterilization space for performing the sterilization treatment is a set value or more, supply of the sterilization mist or sterilization gas containing the active ingredient to the sterilization space. And a second supplying step of supplying the sterilized mist or sterilized gas to the sterilized space in an amount according to the degree of sterilization inside the sterilized space. It is characterized by having.

  In the sterilization treatment method of the above configuration, in the first supply step, the amount of sterilized mist or sterilized gas until the relative humidity becomes equal to or higher than the set value is supplied to the sterilized space. Sterilized mist or sterilized gas is supplied until is in a stable state close to saturation with the active ingredient, and then in the second supply step, an amount of sterilized mist or sterilized gas according to the degree of sterilization is supplied. Supply can be done. When supplying the sterilized mist or the sterilized gas in an amount according to the degree of sterilization, the interior of the sterilized space is in a stable state. A slight change in the supply of sterilized mist or sterilized gas in that state does not significantly affect the sterilization treatment. Therefore, the supply amount of the sterilized mist or the sterilized gas in that state does not need to be measured with high accuracy and does not need to be measured severely. Therefore, a highly accurate measuring device is not required to measure the supply amount of the sterilized mist or sterilized gas, and the sterilization treatment can be performed using the sterilization treatment device having a simple structure.

  According to the present invention, since it is not necessary to accurately measure the weight of the sterilized solution in the state before use of the device and the state during use or after use, a high-precision weight measuring device is omitted in a simple manner. The apparatus configured as described above can control the supply amount of the sterilization solution during the sterilization process. Therefore, the manufacturing cost of the sterilization processing apparatus can be suppressed to a low level.

It is a block diagram of the sterilization processing apparatus which concerns on 1st Embodiment of this invention. It is a flow chart when the sterilization process inside the sterilization process target space is performed by the sterilization process apparatus of FIG. It is the graph which showed the transition about the humidity inside the space for sterilization processing when hydrogen peroxide water is supplied inside the space for sterilization processing by the sterilization processing apparatus of FIG. The temperature inside the sterilization target space when a test to determine the supply amount of hydrogen peroxide solution to be supplied is performed when the sterilization liquid is additionally charged in the sterilization treatment by the sterilization treatment device of FIG. 2 is a graph showing humidity.

  Hereinafter, a sterilization treatment apparatus and a sterilization treatment method according to embodiments of the present invention will be described with reference to the accompanying drawings.

(First embodiment)
FIG. 1 shows a schematic configuration diagram of a sterilization processing apparatus 100 according to the first embodiment. The sterilization processing apparatus 100 is configured to be capable of performing the sterilization processing by spraying hydrogen peroxide solution as a sterilization liquid into the interior of the sterilization processing target space (sterilization space) 200. Hydrogen peroxide solution as a sterilizing solution contains hydrogen peroxide as an active ingredient having a bactericidal action. In this embodiment, a hydrogen peroxide solution having a concentration of 30 to 40% is used as the sterilizing solution.

  By spraying the hydrogen peroxide solution into the sterilization target space 200, the sterilizing action of hydrogen peroxide, which is an active component of the hydrogen peroxide solution, is exhibited inside the sterilization target space 200. By sterilizing the interior of the sterilization processing target space 200, the interior of the sterilization processing target space 200 is sterilized, and the space inside the sterilization processing target space 200 becomes a biologically clean environment. can do. Therefore, the sterilization processing target space 200 can be set as an environment suitable for performing cell culture and the like.

  In the present embodiment, since hydrogen peroxide solution is used as the sterilizing solution, it can be decomposed into water and oxygen by passing the hydrogen peroxide solution through manganese dioxide as a catalyst after use. Therefore, the sterilized liquid can be discharged in a harmless state.

  In addition, in the present embodiment, a mode in which hydrogen peroxide solution is used as the sterilization liquid will be described, but the present invention is not limited to the above-described embodiment. Other types of sterilization solutions may be used as long as they have a sterilizing effect inside the sterilization processing target space 200 and can reduce the number of bacteria inside the sterilization processing target space. For example, formalin or an aqueous solution of sodium hypochlorite may be used as the sterilizing solution.

  The sterilization processing apparatus 100 supplies the atomized unit (state changing unit) 10 for atomizing the hydrogen peroxide solution and the atomized hydrogen peroxide solution to the sterilization processing target space 200 and performs the sterilization processing. It has a supply unit (supply unit) 20 for discharging atomized hydrogen peroxide water from the target space 200.

  The atomizing unit 10 has an atomizing tank 11 that stores hydrogen peroxide solution in a liquid state before being atomized. The atomization tank 11 has a block member 14 that forms a part of the wall surface of the storage space 13 that stores the hydrogen peroxide solution and has a triangular shape.

  An ultrasonic transducer 12 that atomizes the stored hydrogen peroxide solution to atomize the hydrogen peroxide solution is provided on the bottom surface of the atomization tank 11. The ultrasonic vibrator 12 is driven inside the stored hydrogen peroxide solution, and vibration energy due to ultrasonic waves is emitted from the ultrasonic vibrator 12 toward the liquid surface, so that the hydrogen peroxide solution is fogged on the liquid surface. And atomized. By atomizing the hydrogen peroxide solution, a mist-like sterilized mist containing an active ingredient for sterilizing action is generated.

  In this embodiment, the hydrogen peroxide solution is atomized by the ultrasonic transducer 12, but the present invention is not limited to the above embodiment, and the sterilized liquid can be atomized. Other configurations may be used if present. For example, a configuration may be used in which a sterilized liquid is sprayed to generate a sterilized mist.

  Further, inside the atomization tank 11, two passage forming members 15 are arranged above the ultrasonic oscillator 12 so as to face each other with the ultrasonic oscillator 12 interposed therebetween. Since the two passage forming members 15 are arranged above the ultrasonic transducer 12 so as to face each other, a passage defined by the passage forming member 15 is formed above the ultrasonic transducer 12. Since the passage is formed above the ultrasonic oscillator 12 by the opposed passage forming members 15, the passage is formed by the passage forming member 15 from the ultrasonic oscillator 12 toward the liquid surface of the hydrogen peroxide solution. .

  When the ultrasonic oscillator 12 is driven in the state where the passage forming member 15 forms the passage between the ultrasonic oscillator 12 and the liquid surface of the hydrogen peroxide solution, the ultrasonic oscillator 12 emits the ultrasonic wave. Vibration energy due to ultrasonic waves is efficiently transmitted to the liquid surface of the hydrogen peroxide solution. Therefore, the vibration energy generated by the ultrasonic vibrator 12 efficiently atomizes the hydrogen peroxide solution, and can atomize a large amount of hydrogen peroxide solution. Although the sterilization processing apparatus 100 of the present embodiment is provided with the passage forming member 15, the passage forming member 15 can be omitted.

  In addition, a water level gauge 16 capable of measuring the water level of the hydrogen peroxide solution is arranged inside the atomization tank 11.

  A duct 30 extends from a position above the ultrasonic transducer 12 in the atomization unit 10 toward the sterilization processing target space 200. The hydrogen peroxide solution atomized by the atomization unit 10 is supplied to the sterilization processing target space 200 through the duct 30.

  The supply unit 20 has a duct 21 extending from the sterilization target space 200 to the atomization tank 11. The duct 21 is arranged so as to connect the sterilization target space 200 and the atomization unit 10. Through the duct 21, the hydrogen peroxide solution discharged from the sterilization target space 200 is resupplied to the atomization tank 11 of the atomization unit 10.

  The supply unit 20 has a fan 22. The fan 22 is arranged inside the duct 21. By driving and rotating the fan 22, the exhaust gas can be exhausted from the sterilization target space 200. Further, by rotating the fan 22, the hydrogen peroxide solution atomized into the sterilization processing target space 200 is sucked into the sterilization processing target space 200, and the atomized hydrogen peroxide solution in the sterilization processing target space 200 is sucked. It is configured to be able to supply hydrogen oxide water. In addition, in the sterilization processing apparatus 100 of the present embodiment, the configuration in which the fan 22 is arranged inside the duct 21 has been described, but the present invention is not limited to the above embodiment. Other forms may be used as long as the atomized hydrogen peroxide solution is supplied to the sterilization target space 200. For example, a configuration in which the fan is arranged inside the duct 30 may be adopted.

  A hygrometer (relative humidity measuring unit) 40 is attached to the sterilization processing target space 200. By installing the hygrometer 40 inside the sterilization processing target space 200, the humidity inside the sterilization processing target space 200 can be measured.

  The hygrometer 40 may have a function as a thermometer so that the temperature inside the sterilization target space 200 can be measured. In the present embodiment, the hygrometer 40 is configured to be able to measure temperature as well. The thermometer may be configured separately from the hygrometer.

  The sterilization processing apparatus 100 has a container 50 for storing hydrogen peroxide solution at a position different from the atomization tank 11. A supply pipe 51 is provided between the container 50 and the atomization tank 11 of the atomization unit 10 so as to connect the container 50 and the atomization tank 11. A supply pump 52 for supplying the hydrogen peroxide solution stored in the container 50 toward the atomization tank 11 via the supply pipe 51 is arranged in the supply pipe 51. Below the container 50, a container 50 and a container scale 53 capable of measuring the weight of the hydrogen peroxide solution stored inside the container 50 are arranged. By driving the supply pump 52, the hydrogen peroxide solution stored in the container 50 can be supplied to the atomization tank 11.

  The sterilization processing apparatus 100 includes a control unit (control unit) 60. The control unit 60 has a processor, a volatile memory, a non-volatile memory, an I / O interface, and the like. The control unit 60 has a reception unit, a storage unit, a diagnosis unit, and an output unit. The receiving unit and the output unit are realized by the I / O interface. The storage unit is realized by a volatile memory and a non-volatile memory. The diagnostic unit is realized by the processor performing arithmetic processing using a volatile memory based on a program stored in the nonvolatile memory.

  The control unit 60 is connected to the ultrasonic transducer 12, the water level gauge 16, the hygrometer 40, the supply pump 52, and the container scale 53. Since the control unit 60 is connected to the water level gauge 16, it can receive the water level of the hydrogen peroxide solution stored in the atomization tank 11 detected by the water level gauge 16. In addition, since the control unit 60 is connected to the hygrometer 40, it can receive the humidity inside the sterilization target space 200 detected by the hygrometer 40. Further, since the control unit 60 is connected to the container scale 53, it can receive the weight of the hydrogen peroxide solution stored in the container 50, which is detected by the container scale 53. By detecting the weight of the hydrogen peroxide solution in the container 50 with the container scale 53, the weight of the hydrogen peroxide solution supplied from the container 50 to the atomization tank 11 can be detected.

  The control unit 60 can control the drive of the ultrasonic transducer 12 based on the data received from the water level gauge 16, the hygrometer 40, and the container weight gauge 53. Further, the drive of the supply pump 52 can be controlled based on the data received from the water level gauge 16, the hygrometer 40, and the container weight gauge 53.

  The drive of the supply pump 52 is controlled while detecting the water level of the hydrogen peroxide solution stored in the atomization tank 11 by the water level gauge 16, and the supply of the hydrogen peroxide solution from the container 50 to the atomization tank 11 is controlled. Therefore, the water level of the hydrogen peroxide solution in the atomization tank 11 can be kept within a certain range. Therefore, the water level of the hydrogen peroxide solution in the atomization tank 11 can be maintained at a water level suitable for atomizing the hydrogen peroxide solution by driving the ultrasonic vibrator 12. Thereby, when the ultrasonic transducer 12 is driven to atomize the hydrogen peroxide solution, the hydrogen peroxide solution can be efficiently atomized.

  When the mist of the hydrogen peroxide solution atomized by the drive of the fan 22 is supplied into the sterilization target space 200 and the hydrogen peroxide solution in the atomization tank 11 is consumed, the excess amount of the consumed amount is exceeded. Hydrogen oxide water is supplied to the inside of the atomization tank 11, and the water level of the hydrogen peroxide water inside the atomization tank 11 is kept constant. Since the water level of the hydrogen peroxide solution is kept constant inside the atomization tank 11, the amount of hydrogen peroxide water supplied from the container 50 to the atomization tank 11 is supplied to the inside of the sterilization target space 200. It becomes the consumption amount of hydrogen peroxide water. Therefore, by detecting the weight of the hydrogen peroxide solution in the container 50, the consumption amount of the hydrogen peroxide solution consumed in the atomization tank 11 can be detected.

  The control unit 60 may be configured to control the driving of the fan 22 of the supply unit 20.

  A control flow by the sterilization processing apparatus 100 when the sterilization processing apparatus 100 configured as described above performs the sterilization processing of the sterilization processing target space 200 will be described.

  FIG. 2 shows a flowchart when the sterilization processing apparatus 100 performs the sterilization processing of the sterilization processing target space 200.

  First, the temperature and humidity inside the sterilization target space 200 are measured (S1). The temperature and humidity inside the sterilization processing target space 200 are measured by a hygrometer 40 attached inside the sterilization processing target space 200. The data about the temperature and humidity detected by the hygrometer 40 is sent to the control unit 60.

  Next, it is determined whether the temperature and humidity inside the sterilization target space 200 measured in S1 are within the set range (S2). It is determined whether the detected values of the temperature and humidity inside the sterilization processing target space 200, which are received by the control unit 60 and measured by the hygrometer 40, are within a predetermined setting range. Here, the control unit 60 compares the detected value of the temperature and humidity inside the sterilization processing target space 200 with a predetermined setting range. As a result of comparing the detected values of the temperature and humidity inside the sterilization processing target space 200 with a predetermined setting range, the temperature and humidity inside the sterilization processing target space 200 deviate from the setting range. If so, the sterilization process is stopped (S3). When the temperature and humidity inside the sterilization processing target space 200 are within the set range, atomization of hydrogen peroxide water by the atomization unit is started (S4).

  The atomization of the hydrogen peroxide solution is performed by driving the ultrasonic vibrator 12. The ultrasonic vibrator 12 is driven inside the stored hydrogen peroxide solution, and the vibration energy of the ultrasonic waves acts on the hydrogen peroxide solution. Atomized. Therefore, atomized hydrogen peroxide solution is generated at a position above the liquid surface.

  The atomization of the hydrogen peroxide solution continues while the ultrasonic transducer 12 is driven. Therefore, the amount of atomized hydrogen peroxide solution is proportional to the length of time that the ultrasonic transducer 12 is driven inside the hydrogen peroxide solution.

  When the hydrogen peroxide solution is atomized by the atomization unit 10, the atomized hydrogen peroxide solution is supplied to the sterilization target space 200 (S5). In this embodiment, when the ultrasonic vibrator 12 of the atomizing unit 10 is driven, the fan 22 of the supply unit 20 is driven. When the fan 22 is driven, air is discharged from the sterilization target space 200 through the duct 21. Along with this, the pressure inside the sterilization processing target space 200 decreases, so that the hydrogen peroxide solution atomized by the atomization unit 10 is supplied to the inside of the sterilization processing target space 200 via the duct 30.

  The atomized hydrogen peroxide solution is supplied to the sterilization processing target space 200 in S5 until the relative humidity inside the sterilization processing target space 200 becomes equal to or higher than a set value (first supplying step). FIG. 3 is a graph showing the transition of the relative humidity inside the sterilization target space 200 when the hydrogen peroxide solution is divided by time. In FIG. 3, the set value for the relative humidity is shown as H1. The time during which the hydrogen peroxide solution is supplied into the sterilization target space until the relative humidity becomes equal to or higher than the set value H1 is t1.

  Here, the set value for the relative humidity is determined to be saturated or a state in which the hydrogen peroxide as an active ingredient contained in the hydrogen peroxide solution is saturated in the sterilization target space 200. It is the value of relative humidity when Here, the “saturation-compliant state” means that when the temperature of the surface of the sterilization processing target object of the sterilization processing target space 200 is lower than the internal space of the sterilization processing target space 200, the sterilization processing target space 200 Even if the hydrogen peroxide is not saturated in the entire space, the hydrogen peroxide is saturated and condensed at the position around the surface of the sterilization target object in the sterilization target space 200. Shall mean that. In the present embodiment, the target of the sterilization processing is the surface of the portion surrounding the space portion of the sterilization processing target space 200 and the surface of the object installed inside the space of the sterilization processing target space 200. That is, the surface of the sterilization processing object is the surface of the portion surrounding the space in the sterilization processing target space 200 in which the sterilization processing is performed and the surface of the object installed in the space in which the sterilization processing is performed. The surface of the sterilization processing target includes, for example, surfaces such as a ceiling, a floor, and side walls that surround the space portion of the sterilization processing target space 200. Furthermore, for example, the surface of the sterilization processing target includes the surface of a robot or a shelf installed inside the space of the sterilization processing target space 200. There is a temperature difference between the space center of the sterilization processing target space 200 and the surroundings of the sterilization processing target, and it is not saturated in the entire space but saturated around the sterilization processing target. It is said that it is a state according to ". The periphery of the sterilization target object is a portion around the surface of the sterilization target object.

  When hydrogen peroxide solution is used as the sterilizing solution, atomized hydrogen peroxide solution is continuously supplied to the interior of the sterilization target space 200, and the relative humidity of water becomes 70% or more. At times, it is determined that the hydrogen peroxide is saturated or has reached a state similar to saturation. When the hydrogen peroxide solution is used as a sterilizing solution for performing the sterilization treatment inside the sterilization treatment target space 200, the relative humidity of moisture in the sterilization treatment target space 200 is usually 70%. When the above is reached, hydrogen peroxide is saturated inside the sterilization target space 200. Alternatively, hydrogen peroxide is almost saturated inside the sterilization target space 200. Thus, when the effective component of the sterilization solution is hydrogen peroxide, it can be determined that the relative humidity is 70% and the hydrogen peroxide is almost saturated.

  In the present embodiment, the set value H1 for the relative humidity inside the sterilization target space 200 is 70%, but the present invention is not limited to this. When hydrogen peroxide solution is used as the sterilizing solution, the set value for the relative humidity may be a higher set value as long as it is 70% or more. The higher the value, the more reliably the hydrogen peroxide solution becomes saturated when the relative humidity reaches the set value.

  The set value H1 for the relative humidity inside the sterilization processing target space 200 may be a value smaller than 70%. Specifically, depending on the type of the sterilizing solution used, the sterilizing solution may have a low saturated vapor pressure. In such a case, even if the relative humidity of water is less than 70% in the sterilization target space 200, the effective components of the sterilization solution are saturated in the sterilization target space 200. there's a possibility that. Even when the sterilization liquid is hydrogen peroxide water, depending on the surrounding environment, even if the relative humidity of water is less than 70% in the interior of the sterilization target space 200, The active ingredient of the sterilization liquid may be saturated inside the sterilization target space 200. Therefore, the set value H1 for the relative humidity inside the sterilization processing target space 200 may be a value smaller than 70%. For example, the set value H1 for the relative humidity inside the sterilization target space 200 may be set to about 50%.

  When a sterilizing solution other than hydrogen peroxide is used, the set value changes for each sterilizing solution. A set value for the relative humidity depending on the physical properties of the sterilized liquid may be used.

  When the atomized hydrogen peroxide solution is supplied until the relative humidity inside the sterilization processing target space 200 becomes equal to or higher than the set value H1, the relative humidity inside the sterilization processing target space 200 is set to the set value H1. It is determined whether or not it is above (S6). The control unit 60 determines whether the relative humidity inside the sterilization target space 200 is equal to or higher than the set value H1. Since the measured value of the relative humidity inside the sterilization target space 200 by the hygrometer 40 is sent to the control unit 60, the control unit 60 receives the measured value of the relative humidity detected by the hygrometer 40. And a predetermined set value H1 are compared. As a result of the comparison, if the detected value for the relative humidity is equal to or higher than the set value H1, it is determined that the hydrogen peroxide is saturated or in a state based on saturation within the sterilization target space 200. If the detected value for the relative humidity is smaller than the set value H1, the hydrogen peroxide solution is continuously supplied to the interior of the sterilization processing target space 200. The hydrogen peroxide solution is supplied to the interior of the sterilization processing target space 200 until the detected value for the relative humidity reaches or exceeds the set value H1.

  When the hydrogen peroxide solution is supplied for a time t1 until the relative humidity inside the sterilization processing target space 200 reaches or exceeds the set value H1, the degree of sterilization inside the sterilization processing target space 200 The hydrogen peroxide solution is supplied to the sterilization processing target space 200 in an amount corresponding to. Regarding the supply of the hydrogen peroxide solution at this time, the atomized hydrogen peroxide solution is also supplied to the sterilization processing target space 200 (S7).

  The supply of hydrogen peroxide water to the sterilization processing target space 200 in an amount corresponding to the degree of sterilization processing inside the sterilization processing target space 200 is performed during the time t2 shown in FIG. This is the supply of hydrogen peroxide solution to the processing space 200.

  In the supply (additional input) of the hydrogen peroxide solution to the sterilization processing target space 200 at the time t2, an amount of hydrogen peroxide solution according to the degree of sterilization inside the sterilization processing target space 200 is supplied. (Second supply step). At this time, the amount according to the degree of sterilization inside the sterilization processing target space 200 is determined in advance by a test. The amount according to the degree of sterilization inside the sterilization processing target space 200, which is determined by the test, will be described later.

  When the interior of the sterilization processing target space 200 is saturated with hydrogen peroxide, the hydrogen peroxide solution is condensed inside the sterilization processing target space 200. When the hydrogen peroxide solution is condensed inside the sterilization target space 200, the condensed hydrogen peroxide solution adheres to the surface of the sterilization target object in the sterilization target space 200. The hydrogen peroxide solution adhering to the surface of the sterilization target object in the sterilization target space 200 effectively exerts a bactericidal action there, so that the interior of the sterilization target space 200 is sterilized. The hydrogen peroxide solution exhibits a bactericidal action even in a gas state, but the bactericidal power is significantly stronger in the liquid state than in the gas state. In other words, the sterilizing power of the wet method is stronger than that of the dry method. In addition, even if hydrogen peroxide is saturated around the object to be sterilized in the sterilization target space 200 and dew condensation occurs and the hydrogen peroxide is in a state conforming to saturation, the sterilization target space 200 is reduced. By condensing the hydrogen peroxide solution on the surface of the sterilization target object, the hydrogen peroxide solution attached to the surface of the sterilization target object in the sterilization target space 200 can effectively exert a bactericidal action there. Therefore, even if hydrogen peroxide is in a state of being saturated in the sterilization target space 200, the sterilization process can be performed in the sterilization target space 200 by the wet method.

  At time t2, when hydrogen peroxide water in an amount corresponding to the degree of sterilization inside the sterilization processing target space 200 is supplied to the sterilization processing target space 200, an amount of excess hydrogen peroxide corresponding to the degree of sterilization processing is supplied. It is determined whether or not the hydrogen oxide water has been supplied to the sterilization target space 200 (S8). The determination at this time is performed by the control unit 60. The control unit 60 can receive the detection value of the weight of the container 50 in which the hydrogen peroxide solution is stored by the container scale 53. From the detected value of the weight of the container 50, the consumption amount of hydrogen peroxide water can be detected.

  From the detected consumption amount of hydrogen peroxide water, it is determined whether or not the amount of hydrogen peroxide water according to the degree of sterilization has been supplied to the sterilization target space 200. If the amount of hydrogen peroxide solution according to the degree of sterilization is not supplied to the sterilization target space 200, the amount of hydrogen peroxide solution according to the degree of sterilization is continuously supplied. Hydrogen peroxide water is supplied. If the hydrogen peroxide solution is supplied to the sterilization processing target space 200 in an amount according to the degree of sterilization, the supply of the hydrogen peroxide solution at time t2 is completed, and the sterilization processing target space 200 is peroxidized. The supply of hydrogen water is stopped.

  At this time, atomization of the hydrogen peroxide solution by the atomization unit 10 is stopped. After that, the state is maintained for a certain period of time. The holding time t3 shown in FIG. 3 is predetermined according to the degree of sterilization treatment. The state is held for a predetermined holding time.

  When the holding time t3 in FIG. 3 has passed, the sterilization processing target space 200 is exhausted (S10). The exhaust from the sterilization processing target space 200 is performed during the time t4 in FIG. At this time, the residual hydrogen peroxide solution or the like is discharged from the sterilization processing target space 200 by exhausting and ventilating the interior of the sterilization processing target space 200. In the present embodiment, the exhaust from the sterilization processing target space 200 performed during the time t4 is performed until the concentration of hydrogen peroxide inside the sterilization processing target space 200 becomes 1 ppm or less.

  In the present embodiment, the exhaust from the sterilization processing target space 200 is performed until the concentration of hydrogen peroxide inside the sterilization processing target space 200 becomes 1 ppm or less, but the present invention is not limited to this. Not done. It may be performed until the concentration of hydrogen peroxide inside the sterilization processing target space 200 becomes a lower concentration, or exhaust is performed at a stage where the concentration of hydrogen peroxide inside the sterilization processing target space 200 is high. You may stop.

  When the sterilization target space 200 is exhausted during the time t4, the driving of the fan 22 is stopped. At this time, the sterilization process is completed.

  Next, in S7, according to the degree of sterilization of the hydrogen peroxide solution supplied to the sterilization processing target space 200 during the time t2 shown in FIG. The test for determining the amount will be described. The amount of the hydrogen peroxide solution supplied to the sterilization processing target space 200 at time t2 according to the degree of sterilization inside the sterilization processing target space 200 depends on the temperature and humidity of the surrounding environment. It is predetermined accordingly.

  The supply amount of the hydrogen peroxide solution, which is supplied to the sterilization processing target space 200 by the additional input of the time t2, is performed in advance for each temperature within a certain range and humidity within a certain range in the surrounding environment. Determined by testing. The supply amount of the hydrogen peroxide solution to the sterilization processing target space 200 at this time is an amount according to the degree of sterilization inside the sterilization processing target space 200.

  In a test conducted for each temperature and humidity within a certain range, the temperature and humidity were sterilized at four points outside the certain range and near four corners of the certain range (Fig. 4). The supply amount of hydrogen peroxide solution that is confirmed to be in the state is detected. Of the supply of hydrogen peroxide water detected at 4 points and confirmed to be in a sterilized state, the largest supply amount of hydrogen peroxide water is determined as an amount according to the degree of sterilization. To be

  If a certain amount of hydrogen peroxide is added and temperature and humidity are confirmed to be sterilized in an environment that is more severe than the certain range for sterilizing action, then within a certain range. It can be presumed that at the temperature and humidity of 1, the sterilized state is maintained by the supplied amount of the hydrogen peroxide solution. Therefore, in the present embodiment, a slightly sterilized region, a slightly cooled region, a slightly humidified region, and a slightly dipped region are sterilized in a certain range. It is confirmed that the supply amount of hydrogen peroxide solution is detected. That is, regarding the temperature and the humidity, the supply amount of the hydrogen peroxide solution which is confirmed to be in the sterilized state is detected at four points outside the fixed range. Of the supply of hydrogen peroxide water detected at 4 points and confirmed to be in a sterilized state, the largest supply amount of hydrogen peroxide water is determined as an amount according to the degree of sterilization. To be

  FIG. 4 shows a test line for setting the supply amount of hydrogen peroxide solution according to the degree of sterilization for a certain range of temperature and a certain range of humidity inside the sterilization target space 200. It shows the temperature and humidity that are set at the time of contact. In FIG. 4, the constant range of temperature is in the range of 20 to 30 degrees and the constant range of humidity is in the range of 35 to 80 percent. In the test performed at this time, the temperature and humidity are set to the temperatures and humidity at points P1, P2, P3, and P4 in FIG. 4, and the hydrogen peroxide solution is supplied when the sterilized state is confirmed. Detect the amount in each state. Of the hydrogen peroxide water supply amounts when the sterilized state in each of the detected states is confirmed, the largest supply amount of the hydrogen peroxide water is reduced in the sterilization processing target space 200. Set the supply amount according to the degree of bacteria.

  In the state P1 of FIG. 4, the temperature is set to be slightly lower than the lower limit temperature of 20 degrees in the certain range, and the humidity is set to be slightly higher than the upper limit of 80% in the certain range. The state P1 is a temperature within a certain range and a certain range within a region in which the temperature is lower than the lower limit temperature of 20 degrees in the certain range and higher than the upper limit humidity of 80% in the certain range in FIG. The temperature and humidity of the part close to the humidity of.

  In the state P1, hydrogen peroxide solution is supplied in the state of mist-like mist (sterile mist) into the interior of the sterilization target space 200, and hydrogen peroxide is confirmed to be in the sterilized state. The water supply amount (first supply amount) is detected. Thereby, the supply amount of the mist (sterilized mist) supplied to the interior of the sterilization processing target space 200 is detected.

  In the state P2 of FIG. 4, the temperature is set to be slightly lower than the lower limit temperature of 20 degrees in the certain range, and the humidity is set to be slightly lower than the lower limit of 35% in the certain range. The state P2 is a temperature in a certain range and a certain range in a region in which the temperature is lower than the lower limit temperature of 20 degrees in the certain range and the humidity is lower than 35% of the lower limit humidity in the certain range in FIG. The temperature and humidity of the part close to the humidity of.

  In the state P2, the hydrogen peroxide solution is supplied to the interior of the sterilization processing target space 200 in a mist state, and it is confirmed that the sterilized state is the supply amount of the hydrogen peroxide solution (second Supply amount) is detected.

  In the state P3 of FIG. 4, the temperature is set to be slightly higher than the upper limit temperature of 30 degrees in a certain range, and the humidity is set to be slightly lower than the lower limit of 35% in the certain range. The state P3 is a temperature within a certain range and a certain range in a region in which the temperature is higher than the upper limit temperature of 30 degrees in the certain range and lower than the lower limit humidity of 35% in the certain range in FIG. The temperature and humidity of the part close to the humidity of.

  In the state P3, the hydrogen peroxide solution is supplied to the interior of the sterilization target space 200 in a mist state, and it is confirmed that the hydrogen peroxide solution is in the sterilized state (the third amount). Supply amount) is detected.

  In state P4 of FIG. 4, the temperature is set to be slightly higher than the upper limit temperature of 30 degrees in a certain range, and the humidity is set to be slightly higher than the lower limit of 80% in the certain range. In the state P4, the temperature in a certain range and the certain range are higher than the upper limit temperature of 30 degrees in the certain range and the humidity is higher than 80% of the upper limit humidity in the certain range in FIG. The temperature and humidity of the part close to the humidity of.

  In the state P4, the hydrogen peroxide solution is supplied to the interior of the sterilization target space 200 in a mist state, and it is confirmed that the hydrogen peroxide solution is in the sterilized state (the fourth amount). Supply amount) is detected.

  In this way, at each of the four points P1 to P4, the supply amount of the hydrogen peroxide solution confirmed to be in the sterilized state is detected. Among the supply amount of hydrogen peroxide water which is confirmed to be in a sterilized state detected at 4 points of P1 to P4, the largest supply amount of hydrogen peroxide water is the sterilization amount in this range. It is set as an amount according to the degree.

  When confirming whether or not the inside of the sterilization processing target space 200 is in a sterilized state, the confirmation can be performed using a biological indicator. Whether a bacterium remains in the sterilization processing target space 200 by arranging a biological indicator inside the sterilization processing target space 200 and confirming the state of the biological indicator after that. You can check it. When it is confirmed that no bacterium remains in the sterilization target space 200 by using the biological indicator, it is confirmed that the sterilized state is achieved. You can judge.

  The supply amount according to the degree of sterilization of the hydrogen peroxide solution inside the sterilization processing target space 200, which is predetermined by the test, is the degree of sterilization processing required inside the sterilization processing target space 200. It depends on When a strict level of sterilization treatment is required, the amount of hydrogen peroxide solution supplied to the interior of the sterilization treatment target space 200 increases accordingly. On the other hand, when the level required for the sterilization treatment is not strict, a large amount of hydrogen peroxide water is not required, and the amount of hydrogen peroxide water supplied to the interior of the sterilization treatment target space 200 is small. Complete.

  In this way, the supply amount of the hydrogen peroxide solution according to the degree of sterilization is set for a certain temperature range and a certain humidity range. Further, by setting the supply amount of the hydrogen peroxide solution according to the degree of sterilization with respect to the temperature and humidity within the certain range for the other ranges, the sterilization can be performed for the temperature and humidity within the other ranges. The supply amount of hydrogen peroxide solution can be set according to the degree. In this way, by dividing the range of temperature and humidity to be used into a plurality of ranges, and setting the supply amount of hydrogen peroxide solution according to the degree of sterilization for each of the plurality of ranges, The supply amount of the hydrogen peroxide solution can be set according to the degree of sterilization over the entire range of humidity. Further, since the supply amount of the hydrogen peroxide solution according to the degree of sterilization is determined according to the temperature and humidity of the surrounding environment, the supply amount of the sterilization liquid can be easily determined.

  As described above, the sterilization processing device 100 is used to perform the sterilization processing inside the sterilization processing target space 200. In the present embodiment, the hydrogen peroxide solution is supplied to the sterilization processing target space 200 in an amount until the relative humidity becomes equal to or higher than the set value, and thereafter, the degree of sterilization in the sterilization processing target space 200. The hydrogen peroxide solution is supplied to the sterilization processing target space 200 in an amount corresponding to. Therefore, since the supply amount of hydrogen peroxide water to the sterilization processing target space 200 can be changed according to the degree of sterilization inside the sterilization processing target space 200, the sterilization processing corresponding to the required level. Can be done easily.

  In addition, since the hydrogen peroxide solution in an amount up to the set value or more is supplied to the interior of the sterilization processing target space 200, the hydrogen peroxide solution until the sterilization processing target space 200 is in a state close to a saturated state. Can be supplied. By supplying the hydrogen peroxide solution to the sterilization processing target space 200, the sterilization processing target space 200 is in a state close to a state saturated with hydrogen peroxide, so that the interior of the sterilization processing target space 200 is balanced, It will be in a relatively stable state. In such a stable state, a slight change in the amount of hydrogen peroxide does not significantly affect the sterilization treatment. Therefore, the amount of hydrogen peroxide solution supplied from this does not need to be measured with high accuracy, and does not need to be measured very severely. Therefore, a highly accurate weight measuring device is not required to measure the amount of hydrogen peroxide solution. Therefore, it is possible to control the supply amount of the hydrogen peroxide solution at the time of the sterilization treatment by a device that omits the highly accurate weight measuring device. As a result, the manufacturing cost of the sterilization treatment device can be kept low.

  In addition, the set value of the relative humidity inside the sterilization processing target space 200 when the hydrogen peroxide solution is supplied at the time t1 is the peroxidation of the active ingredient in hydrogen peroxide inside the sterilization processing target space 200. It is the value of the relative humidity at which it is judged that the hydrogen is saturated or is in a state of being saturated. Therefore, when the hydrogen peroxide solution is supplied to the interior of the sterilization target space 200 at time t2, the interior of the sterilization target space 200 is saturated with hydrogen peroxide or in a state similar to saturation. There is. The degree of sterilization during the sterilization processing is proportional to the amount of hydrogen peroxide supplied to the interior of the sterilization processing target space 200 after the interior of the sterilization processing target space 200 is saturated. Therefore, according to the sterilization treatment of the present embodiment, the interior of the sterilization treatment target space 200 is once saturated or brought into a stable state based on saturation, and then the hydrogen peroxide solution is supplied at a supply amount according to the degree of sterilization. Is supplied. Therefore, it is possible to easily supply the hydrogen peroxide solution with the supply amount according to the required degree of sterilization.

  In the present embodiment, the amount of hydrogen peroxide solution supplied to the interior of the sterilization processing target space 200 after the interior of the sterilization processing target space 200 becomes saturated is determined by the container weight scale 53. It is detected from the weight of the container 50 storing the hydrogen oxide water. Therefore, it is possible to detect the consumption amount of the hydrogen peroxide solution after the interior of the sterilization processing target space 200 is saturated without using a highly accurate weight measuring device and with a simple configuration.

  For example, in the sterilization treatment device disclosed in Japanese Patent Laid-Open No. 2011-136035, the consumption of the sterilization liquid is measured by measuring the weight of the sterilization liquid in a state before use and a state in use. Is being measured. In this device, when measuring the weight of the sterilization liquid, the inside of the sterilization treatment target space is not saturated with the effective components of the sterilization treatment liquid, so the inside of the sterilization treatment target space is unstable. Is in a state. Therefore, the degree of sterilization in the sterilization treatment greatly changes even if the supply amount of the sterilization liquid is slightly changed. Therefore, this device is required to accurately measure the consumption amount of the sterilized liquid used in the sterilization treatment. When accurately measuring the weight of the sterilization liquid inside the sterilization treatment equipment, also measure the weight of the sterilization liquid that has condensed in the duct that extends between the atomization tank and the sterilization treatment target space. There is a need to. Since the weight measuring device is often not provided up to the inside of the duct due to the configuration of the device, the inside of the duct may be heated in order to prevent the sterilized liquid from condensing and remaining in the duct. Heating the duct may evaporate the sterilized liquid in the duct and prevent the sterilized liquid from remaining in the duct. This prevents the sterilized liquid from remaining in the duct, and the weight of the sterilized liquid in the device can be accurately measured. However, in this case, a structure for heating the inside of the duct is required, which may increase the manufacturing cost of the sterilization treatment apparatus. In addition, a highly accurate weight measuring device is required, which may increase the manufacturing cost of the sterilization processing device.

  On the other hand, in the present embodiment, the measured consumption amount of hydrogen peroxide water is the sterilization processing target space 200 after the interior of the sterilization processing target space 200 is saturated with hydrogen peroxide. It is the amount of hydrogen peroxide water supplied to the inside of the.

  When the consumption of hydrogen peroxide water is measured, the sterilization processing target space 200 is saturated with hydrogen peroxide, and the interior of the sterilization processing target space 200 is in a stable state. The amount of hydrogen peroxide solution supplied from this does not need to be measured with high accuracy and does not need to be measured very severely. No measuring device is required. Further, since it is not necessary to measure the weight of the hydrogen peroxide solution with high accuracy, there is no need to install a structure for heating the inside of the duct. Therefore, it is not necessary to provide a configuration for heating the duct 30 and the duct 21, and by omitting the configuration for heating the inside of the duct from the sterilization processing apparatus 100, the configuration of the sterilization processing apparatus 100 is improved. Can be simplified. As a result, the manufacturing cost of the sterilization processing apparatus 100 can be reduced.

  Further, after the sterilization target space 200 is saturated with hydrogen peroxide and becomes in a balanced and stable state, the hydrogen peroxide solution is supplied in an amount corresponding to the degree of sterilization. Therefore, when the supply amount of the hydrogen peroxide solution is supplied according to the degree of sterilization, the required supply amount of the hydrogen peroxide solution is unlikely to be affected by the change in the surrounding environment. Even if the temperature and humidity inside the sterilization target space 200 change slightly due to changes in the surrounding environment, the supply amount of hydrogen peroxide solution according to the degree of sterilization is not significantly affected. Therefore, when the hydrogen peroxide solution is supplied in accordance with the degree of sterilization, the interior of the sterilization processing target space 200 is supplied by supplying a constant amount of hydrogen peroxide solution regardless of changes in the surrounding environment. Sterilization treatment can be reliably performed. Therefore, stable sterilization can be performed regardless of changes in ambient temperature and humidity.

  Further, in the present embodiment, the supply amount according to the degree of sterilization of the hydrogen peroxide solution supplied to the sterilization processing target space 200 at time t2 is a temperature within a certain range and a certain range in the surrounding environment. It is determined for each humidity inside by a test conducted in advance. Therefore, when performing the sterilization treatment, it is possible to easily supply the hydrogen peroxide solution according to the degree of sterilization.

  Further, in the test for determining the supply amount of the hydrogen peroxide solution supplied at the time t2, the temperature and humidity were sterilized at four points outside the fixed range and near the four corners of the fixed range. The supply amount of hydrogen peroxide water, which is confirmed to be in the open state, is detected. Of the supply of hydrogen peroxide water detected at 4 points and confirmed to be in a sterilized state, the largest supply amount of hydrogen peroxide water is determined as an amount according to the degree of sterilization. To be

  As a result, the supply amount of the hydrogen peroxide solution confirmed to be in a sterilized state within a certain range of temperature and humidity is set as the supply amount at time t2. Therefore, at the time of the sterilization treatment, it is possible to supply the sterilization treatment target space 200 with a supply amount of hydrogen peroxide water that can reliably achieve the sterilized state. Therefore, the reliability of the sterilization processing apparatus 100 can be maintained high. Further, in order to set the supply amount of the hydrogen peroxide solution at the time t2, it is not necessary to calculate the supply amount of the hydrogen peroxide solution using a complicated formula, and the supply amount of the hydrogen peroxide solution can be calculated by a simple method. Can be set. Therefore, it is not necessary to improve the performance of the control unit 60, and the manufacturing cost of the sterilization processing apparatus 100 can be reduced.

  In addition, the said embodiment demonstrated the form which the hydrogen peroxide solution as a sterilization mist in which the sterilization liquid was atomized is supplied to the inside of the sterilization process target space 200. However, the present invention is not limited to the above embodiment. The sterilization gas generated by vaporizing the sterilization liquid may be supplied to the inside of the sterilization processing target space 200. In that case, the vaporized sterilizing gas exerts a sterilizing action inside the sterilization processing target space 200 to perform the sterilization processing inside the sterilization processing target space 200. When the sterilization gas is hydrogen peroxide generated by vaporizing hydrogen peroxide solution, the hydrogen peroxide exerts a sterilizing action inside the sterilization target space 200 and the sterilization target space 200. Perform sterilization inside.

  Even if hydrogen peroxide as a sterilizing gas generated by vaporizing the sterilizing liquid is supplied to the interior of the sterilization processing target space 200, the interior of the sterilization processing target space 200 is peroxidized. It may be a form in which hydrogen peroxide vaporized until it is saturated with the active ingredient of hydrogen or a state similar to saturation is supplied, and then an amount of hydrogen peroxide is supplied according to the degree of sterilization.

  At that time, as a state changing unit for changing the state of the sterilized liquid, instead of the atomization unit 10 for atomizing the sterilized liquid such as hydrogen peroxide solution, a vaporization unit for vaporizing the sterilized liquid is used as the sterilization treatment device. It may be provided. As the vaporization unit that vaporizes the sterilized liquid, for example, a heating device that heats the sterilized liquid may be applied.

  The sterilized gas has a relatively high humidity because a sterilized liquid such as hydrogen peroxide solution is vaporized and generated. When the sterilized gas is hydrogen peroxide, hydrogen peroxide as a sterilized solution containing a sterilizing active ingredient is vaporized by heating or the like to generate hydrogen peroxide as a sterilized gas, The humidity of hydrogen peroxide as a vaporized sterile gas is relatively high. Therefore, when the vaporized hydrogen peroxide is supplied to the sterilization processing target space 200, the humidity inside the sterilization processing target space 200 is increased by continuously supplying the sterilization gas into the sterilization processing target space 200. Becomes higher. When the amount of sterilization gas is supplied to the sterilization treatment target space 200 until the relative humidity becomes equal to or higher than the set value, the interior of the sterilization treatment target space 200 is saturated with the effective component of the sterilization gas or is saturated. It will be in a state of being After the inside of the sterilization processing target space 200 is saturated with the active ingredient or a state similar to saturation, an amount of vaporized sterilization gas corresponding to the degree of sterilization is supplied to the inside of the sterilization processing target space 200. To do. As a result, an amount of sterilized gas according to the degree of sterilization can be supplied to the interior of the sterilization target space 200. As described above, even when the sterilized gas generated by vaporizing the sterilized liquid is supplied to the interior of the sterilization processing target space 200, the supply of the sterilized gas can be controlled.

  Further, the atomized sterilized mist and the vaporized sterilized gas are generated in a mixed state, and the atomized sterilized mist and the vaporized sterilized gas are supplied to the sterilization target space 200. It may be possible to exert a bactericidal action.

  At that time, similarly, the atomized sterilization mist and the vaporized sterilization gas are supplied to the sterilization processing target space 200 in an amount until the relative humidity becomes equal to or higher than the set value, and the sterilization processing target space 200 is supplied. The inside of the product is saturated with the active ingredient of the sterilized solution or in a state similar to saturation. Then, the atomized sterilized mist and the vaporized sterilized gas are supplied to the interior of the sterilization processing target space 200, so that the atomized sterilized mist and the vaporized sterilized mist are vaporized in an amount corresponding to the degree of sterilization. The sterilized gas is supplied to the sterilization target space 200.

(Second embodiment)
Next, a sterilization processing apparatus according to the second embodiment of the present invention will be described. It should be noted that description of the parts configured in the same manner as in the first embodiment is omitted, and only different parts will be described.

  In the first embodiment, the relative humidity inside the sterilization processing target space 200 is measured using the hygrometer 40, and the sterilization liquid is supplied to the sterilization processing target space 200 in an amount until the relative humidity becomes equal to or higher than a set value. By doing so, the interior of the sterilization target space 200 is saturated with the sterilization liquid. On the other hand, in the second embodiment, it is directly detected whether or not the inside of the sterilization processing target space 200 is saturated with the sterilization liquid without measuring the relative humidity inside the sterilization processing target space 200. This is different from the first embodiment in that

  In the second embodiment, a sensor (sensor unit) that detects whether or not the effective component of the sterilization liquid is saturated inside the sterilization processing target space 200 is arranged inside the sterilization processing target space 200. When it is confirmed by the sensor arranged inside the sterilization processing target space 200 that the inside of the sterilization processing target space 200 is saturated with the active components of the sterilization processing liquid, the sterilization processing liquid at time t1. From the supply of the sterilized liquid to the supply of the sterilized liquid in a supply amount according to the degree of sterilization at time t2. That is, when it is confirmed that the interior of the sterilization processing target space 200 is saturated with hydrogen peroxide which is an effective component of hydrogen peroxide water, the supply amount of peroxidation according to the degree of sterilization is performed. Move to supply of hydrogen water.

  As a sensor for detecting whether or not the active ingredient of the sterilization solution is saturated inside the sterilization processing target space 200, for example, the inside of the sterilization processing target space 200 is irradiated with light and the reflected light is detected. Therefore, a sensor that detects whether or not the inside of the sterilization target space 200 is saturated with the active ingredient of the sterilization liquid may be used. Further, a sensor for detecting whether or not the inside of the sterilization processing target space 200 is saturated with hydrogen peroxide by disposing an electric resistance inside the sterilization processing target space 200 and detecting a current flowing through the electric resistance. May be used. Any sensor may be used as long as it can detect a state where the interior of the sterilization processing target space 200 is saturated with the effective components of the sterilization solution.

  As described above, in the second embodiment, the state in which the effective component of the sterilization liquid is saturated inside the sterilization target space 200 is directly detected. When it is detected that the inside of the sterilization processing target space 200 is saturated with the effective components of the sterilization liquid, the supply of the sterilization liquid according to the degree of sterilization at time t2 is performed. Since the state in which the active ingredient of the sterilization solution is saturated is directly detected inside the sterilization target space 200, the interior of the sterilization target space 200 is saturated with the active ingredient of the sterilization solution. It is possible to more reliably determine whether or not there is. Since the sterilization treatment target space 200 is surely saturated with the effective components of the sterilization liquid, the sterilization liquid is supplied in an amount according to the degree of sterilization, so that the sterilization treatment can be performed more reliably. .

10 Atomization unit 20 Supply unit 40 Hygrometer 60 Control unit

Claims (7)

A sterilizing solution containing an active ingredient, a state changing section for atomizing or vaporizing,
A sterilization mist in which the sterilized liquid is atomized by the state changing unit or a sterilized gas in which the sterilized liquid is vaporized by the state changing unit, and a supply unit that supplies the sterilized space for performing sterilization processing. ,
A relative humidity measuring unit for measuring the relative humidity inside the sterilized space,
Supplying the sterilized mist or the sterilized gas in an amount until the relative humidity becomes equal to or more than a set value to the sterilized space, and then an amount according to the degree of sterilization in the sterilized space. And a control unit for controlling the supply of the sterilized mist or the sterilized gas so that the sterilized mist or the sterilized gas is supplied to the sterilized space. Processing equipment.   The set value is a value of the relative humidity in which it is determined that the active ingredient in the sterilized liquid is saturated or in a state conforming to saturation inside the sterilized space. The sterilization treatment device described in 1. The active ingredient is hydrogen peroxide,
The sterilization processing apparatus according to claim 2, wherein the set value is 70%.   The sterilization treatment apparatus according to any one of claims 1 to 3, wherein the amount corresponding to the degree of sterilization is determined according to the temperature and humidity of the surrounding environment. The amount according to the degree of sterilization, for each temperature within a certain range and humidity within a certain range in the surrounding environment, is determined by a test performed in advance,
In the test,
It is confirmed that the sterilized state is when the temperature is lower than the lower limit temperature in the constant range of temperature and higher than the upper limit humidity in the constant range of humidity. A first supply amount of the sterilized mist or the sterilized gas,
It is confirmed that a sterilized state is obtained when the temperature is lower than the lower limit temperature in the constant range and the humidity is lower than the lower limit humidity in the constant range. A second supply amount of the sterilized mist or the sterilized gas,
It is confirmed that the sterilized state is when the temperature is higher than the upper limit temperature in the constant range and the humidity is lower than the lower limit humidity in the constant range. A third supply amount of the sterilized mist or the sterilized gas,
It is confirmed that when the temperature is higher than the upper limit temperature in the constant range and the humidity is higher than the upper limit humidity in the constant range, it is in a sterilized state. A fourth supply amount of the sterilized mist or the sterilized gas is detected,
The maximum supply amount among the detected supply amounts from the first supply amount to the fourth supply amount is determined as an amount according to the degree of the sterilization. Sterilization processing equipment. A state changing unit that atomizes or vaporizes the sterilized liquid containing the active ingredient,
A sterilization mist in which the sterilized liquid is atomized by the state changing unit or a sterilized gas in which the sterilized liquid is vaporized by the state changing unit, and a supply unit that supplies the sterilized space for performing sterilization processing. ,
A sensor unit that detects whether the active ingredient is saturated inside the sterilized space,
The sterilized mist or the sterilized gas is supplied to the sterilized space until it is detected that the active ingredient is saturated by the sensor unit, and then the sterilized space inside the sterilized space is sterilized. A control unit for controlling the supply of the sterilized mist or the sterilized gas so that the sterilized mist or the sterilized gas in an amount according to the degree is supplied to the sterilized space. Characteristic sterilization processing device. A first supply step of supplying a sterilized mist or a sterilized gas containing an active ingredient to the sterilized space until the relative humidity inside the sterilized space to be sterilized reaches a set value or more;
A second supply step of supplying the sterilized mist or the sterilized gas to the sterilized space in an amount according to the degree of sterilization inside the sterilized space after the first supply step. And a sterilization method.

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