Abstract: The present invention provides a decontamination device capable of accomplishing a decontamination effect with a proper amount of decontamination agent supplied to a room to be decontaminated by employing a mist circulation dispersion mechanism and reducing the duration of operations such as aeration to achieve more efficient decontamination works. The decontamination device of the present invention includes a mist supply means and a mist circulation dispersion mechanism, and the mist supply means converts a chemical for decontamination into a mist for decontamination, and supplies the same to the inside of a working chamber. The mist circulation dispersion mechanism includes vibration boards disposed adjacent to internal wall surfaces of the working chamber, and the vibration boards are subjected to ultrasonic vibration to generate sound flows from board surfaces by an ultrasound in the vertical direction.

Abstract: A particle control method is provided which can prevent an extremely small quantity of particles descending on a stream of a laminar flow in a clean zone through which the laminar flow flows as in a RABS or isolator device from descending to a specific position or can guide it so as to descend to the specific position by controlling movement of the particles. A particle descent position is separated away from a board surface of the oscillation board by using an acoustic radiation pressure generated by prompting ultrasonic vibration of the oscillation board disposed with a board surface substantially in parallel with a flow direction of the laminar flow.

Abstract: The present invention provides a cleaning-performance evaluation system that can acquire evaluation results in real time as quantitative values without such factors as the experience of evaluators causing variations in evaluations. The present invention includes: a contamination means for administering a mock contaminant to the inside of a work chamber; a waste liquid recovery means for performing a cleaning operation and recovering a cleaning waste-liquid that contains the mock contaminant; a mist generation means for generating a mist of the cleaning waste-liquid; a collection means for collecting inspection air that includes the generated mist; and a detection means for detecting the amount of the mock contaminant included in the inspection air collected by the collection means. The present invention evaluates the cleaning operation by confirming that the amount of the mock contaminant detected by the detection means is at or below a prescribed value.

Abstract: [Problem] Provided is a decontamination system which does not require large scale equipment such as large diameter ducts or anti-condensation heaters, while enabling, with respect to a plurality of rooms targeted to be decontaminated, pipelining of which distance is long for each room, the decontamination system being capable of supplying an accurate amount of decontamination gas for each room. [Solving Means] Compressed air-generating means and decontamination solution-supplying means are included, mixed gas-liquid adjusters and gas generators are respectively provided in each room targeted to be decontaminated, and a conveyance distance of gas-liquid supplying pipes which communicate with the mixed gas-liquid adjusters and the gas generators is longer than a conveyance distance of decontamination solution supplying pipes which communicate with decontamination solution-supplying means and the mixed gas-liquid adjusters.

Abstract: An electron beam irradiation device which can uniformly project electron beams to the entire outer surface of a container by using a small-sized low-energy electron accelerator. When each of the side surface portions of the container is irradiated with the electron beams by supporting a bottom surface portion of the container, a position of the container is moved by the supporting portion so that a distance between each of the side surface portions of the container and an irradiation window of the electron accelerator is made substantially equal. Subsequently, when an upper surface portion and a bottom surface portion of the container are irradiated with the electron beams by holding the side surface portion of the container, the position of the container is moved by the holding portion so that the distances between the upper surface portion and the bottom surface portion of the container and the irradiation windows of the electron accelerators become substantially equal.

Abstract: An electron beam irradiation device which can uniformly project electron beams to the entire outer surface of a container by using a small-sized low-energy electron accelerator. When each of the side surface portions of the container is irradiated with the electron beams by supporting a bottom surface portion of the container, a position of the container is moved by the supporting portion so that a distance between each of the side surface portions of the container and an irradiation window of the electron accelerator is made substantially equal. Subsequently, when an upper surface portion and a bottom surface portion of the container are irradiated with the electron beams by holding the side surface portion of the container, the position of the container is moved by the holding portion so that the distances between the upper surface portion and the bottom surface portion of the container and the irradiation windows of the electron accelerators become substantially equal.

Abstract: A filter unit which has a simple structure and can ensure high-level safety in response to risk during operation of an apparatus such as an isolator device is provided. One type of filter unit includes a rectangular cylindrical body having a first wall portion provided with an air inlet portion and a second wall portion formed so as to cross the first wall portion and provided with an air discharge port portion, a filter member provided in the cylindrical body for filtering introduced air, an annular seal member surrounding an outer periphery portion of the air inlet portion, and a detachable lid body closing the air inlet portion in an airtight manner. The filter unit is connected to a work chamber such that the air inlet portion is attached so as to oppose an air outlet of the work chamber and so that the seal member abuts an outer wall portion of the work chamber in an airtight manner.

Abstract: An electron beam irradiation device which can irradiate an electron beam uniformly to an entire outer surface of an object of irradiation by using a small-sized low-energy electron accelerator with a narrow irradiation window is provided. The device has electron beam irradiation means forming an electron beam irradiation zone and gripping/moving means gripping a part of an object of irradiation and causing the object of irradiation to pass through the electron beam irradiation zone, and the whole surface of the object of irradiation can uniformly pass through the electron beam irradiation zone by combining re-gripping of the object of irradiation by two gripping mechanisms provided on the gripping/moving means, rotation of the object of irradiation by two rotation mechanisms, and movement of the object of irradiation by two moving mechanisms.

Abstract: An isolator device having a work chamber, air supply means for supplying air of a unidirectional airflow traveling from an upper part to a lower part in the work chamber, and air discharge means for discharging air of the unidirectional airflow from a lower part of the work chamber are provided, and moreover, a bulkhead provided in parallel with a peripheral wall portion of the work chamber along the air of the unidirectional airflow and longitudinal air outlets opened along a width direction of a lower end portion in a lower part of the lower end portion of the bulkhead and attached so as to oppose an air inlet portion by a filter unit for air purification is provided.

Abstract: A continuous sterilization system is provided which reliably supports a sterilization target so that the sterilization target is not tipped over during a sterilization process and can stably ensure uniform irradiation periods on any portion of inner and outer surfaces and moreover, a portion sterilized by electron beam irradiation is not contaminated again. The continuous sterilization system is provided with a first conveying means, a first electron beam accelerator, a second conveying means, a second electron beam accelerator, and a third electron beam accelerator.

Abstract: A continuous sterilization system is provided which reliably supports a sterilization target so that the sterilization target is not tipped over during a sterilization process and can stably ensure uniform irradiation periods on any portion of inner and outer surfaces and moreover, a portion sterilized by electron beam irradiation is not contaminated again. The continuous sterilization system is provided with a first conveying means, a first electron beam accelerator, a second conveying means, a second electron beam accelerator, and a third electron beam accelerator.

Abstract: An isolator device having a work chamber, air supply means for supplying air of a unidirectional airflow traveling from an upper part to a lower part in the work chamber, and air discharge means for discharging air of the unidirectional airflow from a lower part of the work chamber are provided, and moreover, a bulkhead provided in parallel with a peripheral wall portion of the work chamber along the air of the unidirectional airflow and longitudinal air outlets opened along a width direction of a lower end portion in a lower part of the lower end portion of the bulkhead and attached so as to oppose an air inlet portion by a filter unit for air purification is provided.

Abstract: A condensation sensor detects whether hydrogen peroxide gas has condensed in a sealed space and determines the condition of a condensate film upon passage of time. The condensate film in the sealed space is controlled with the condensation sensor. The condensation sensor includes a condensate forming part with a plurality of glass plates arranged so that a direction of irradiation is substantially perpendicular to a surface direction, and the condensate forming part is disposed between a projector and a light receiver. The condensation sensor is placed inside an isolator and irradiated with laser beams. The condensate film formed on the glass plates is detected from a change in the quantity of light received by the light receiver, thus the condition of condensation on the surface of an item to be sterilized inside the isolator is presumed, and accordingly, the necessary and sufficient amount of gas introduced is determined.

Abstract: A method of decontamination includes generating a decontamination gas by evaporating an aqueous solution in which the decontamination gas with a higher boiling point than water is dissolved. The decontamination gas is charged into a hermetically sealed decontamination chamber, and then condensed therein. A condensed liquid layer is formed in a form of a thin film on an outer surface of a decontamination subject in the hermetically sealed decontamination chamber. The condensed liquid layer is evaporated at least partially by supplying unsaturated gas into the hermetically sealed decontamination chamber. The unsaturated gas does not saturate in the hermetically sealed decontamination chamber. The decontamination gas is re-condensed after the evaporating step to re-form the condensed liquid layer, by closing supply of the unsaturated gas and re-charging the decontamination gas into the hermetically sealed decontamination chamber.

Abstract: A method of decontamination includes generating a decontamination gas by evaporating an aqueous solution in which the decontamination gas with a higher boiling point than water is dissolved. The decontamination gas is charged into a hermetically sealed decontamination chamber, and then condensed therein. A condensed liquid layer is formed in a form of a thin film on an outer surface of a decontamination subject in the hermetically sealed decontamination chamber. The condensed liquid layer is evaporated at least partially by supplying unsaturated gas into the hermetically sealed decontamination chamber. The unsaturated gas does not saturate in the hermetically sealed decontamination chamber. The decontamination gas is re-condensed after the evaporating step to re-form the condensed liquid layer, by closing supply of the unsaturated gas and re-charging the decontamination gas into the hermetically sealed decontamination chamber.

Abstract: A condensation sensor detects whether hydrogen peroxide gas has condensed in a sealed space and determines the condition of a condensate film upon passage of time. The condensate film in the sealed space is controlled with the condensation sensor. The condensation sensor includes a condensate forming part with a plurality of glass plates arranged so that a direction of irradiation is substantially perpendicular to a surface direction, and the condensate forming part is disposed between a projector and a light receiver. The condensation sensor is placed inside an isolator and irradiated with laser beams. The condensate film formed on the glass plates is detected from a change in the quantity of light received by the light receiver, thus the condition of condensation on the surface of an item to be sterilized inside the isolator is presumed, and accordingly, the necessary and sufficient amount of gas introduced is determined.