IHI Co., Ltd. Developed an atomization type space sterilization device exclusively for the sterilization water “Re:Clear” using fine bubble technology, confirming a high sterilization effect with 1/3 the time of conventional processing

IHI Corporation
Developed an atomization type space sterilization device dedicated to the sterilization water “Re:Clear” using fine bubble technology, confirmed high sterilization effect in 1/3 of the conventional processing time
– Next-generation ozone generator created through co-creation activities of IHI Infection Control Design Lab –

IHI Logistics Industry System Co., Ltd. (head office: Koto-ku, Tokyo; president: Shunji Kasa; hereinafter referred to as “ILM”), a group company of IHI, has recently launched an ozone gas-treated sterilized water that is non-irritating and non-residue. Re:Clear: In order to further enhance the sterilization ability of Re:Clear (hereinafter referred to as “Reclear”), we have developed an atomizer that generates a mist of the drug. In addition, in a sterilization test conducted with the cooperation of Toyota Customizing & Development Co., Ltd. (Headquarters: Yokohama City, Kanagawa Prefecture; President: Kazuya Inagaki; hereinafter referred to as “TCD”) It was confirmed that 99.99% of adherent bacteria were eliminated in time. [Sterilization and material deterioration test of ozone water generator (atomizer)]
[Table 3: https://prtimes.jp/data/corp/89117/table/73_1_9adfb4269271845b6a79986e603c1ee7.jpg ]

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     Figure 1. Test outline
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   Figure 2. Confirmed that there is no effect on material deterioration Last year, IHI and ILM established an infection control design lab (hereinafter “this lab”) at the IHI Yokohama office in order to solve social issues related to public health that changed due to the corona disaster. At this laboratory, we have received challenges from many companies and local governments involved in public health across industries, and we provide solutions that are suitable for each customer based on the know-how that the IHI Group has accumulated. The first deliverable was the Reclear dedicated atomizing space
sterilization device.
Vehicles used by multiple people (ambulances, rental cars, taxis), medical and welfare facilities (hospitals, nursing homes), lodging and banquet facilities (hotels, inns, ceremony halls) use the ILM ozone gas generation method as part of measures to prevent infectious diseases. and spray nozzles are widely used as space purifiers. The gas method enables uniform disinfection because ozone gas spreads evenly to every corner of the space, but the problem is that it takes a long time to disinfect. On the other hand, in the spray method, the disinfectant water (Reclear), which is a chemical agent, has a larger contact area with the bacteria than the gas, so it is possible to disinfect in a short time, but with spraying, the particle size is large and falls quickly. Because of this, it is difficult to spread the contamination to the corner piles, and because water droplets remain on the sterilized equipment, there is an incidental work of wiping twice. As a result of this situation, the need for a
next-generation ozone sterilization method with high sterilization performance in a short time has increased at emergency sites. In order to respond to such needs, ILM has developed a space sterilization device (atomizer) that generates LICLEAR in the form of a mist and is a sterilization method that combines the advantages of gas and liquid. This product is expected to be widely used as a countermeasure against the spread of infection in emergency situations that require disinfection and antivirus measures, disinfection of medical equipment, and public transportation such as vehicles, buses, and aircraft. The target sales volume is 1 million Liclear and 7,000 units of this product in 2023. ILM has a long track record of sales to medical institutions for its ozone-related products, which are infection control devices. In the future, we will make use of this achievement and technology to contribute to measures against nosocomial infections and public health measures not only in Japan but also overseas.
*IHI Infection Control Design Lab.
A research laboratory specializing in infection control established within IHI’s Yokohama office in 2021 in order to embody new infection control solutions for companies and local governments involved in public health. This laboratory brings together experts from IHI Technology Development Headquarters, IHI Logistics Industry Systems, research institutes, universities, and government agencies. In addition, many customers across industries who take measures against public health and community-acquired infections will participate, and we will conduct research to create the “value of infection control” for the new era, such as interviewing on-site issues.・Promoting development.
[Specifications of space purification device for ozone gas treated sterilized water “Re:Clear”]
[Table 4: https://prtimes.jp/data/corp/89117/table/73_2_1c870ce3261abff5c3ae37917886e30d.jpg ]
[Reference example of infection control laboratory deliverables] 1. Mizuho Co., Ltd. Rental medical equipment and hospital facility equipment disinfection tent

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                Figure 3. Demonstration test @ Mizuho Chiba Factory ·Task
We are a leading company that manufactures and sells medical equipment such as operating tables, and also rents out medical equipment. Currently, there are no established work guidelines for reducing the risk of infection when sterilizing returned medical devices, so we consulted the ICDL on how to solve the problem in order to reduce the risk of infection among employees.
A simple sterilization room was set up by combining the returned operating table and the atomized space sterilization device for medical equipment with a simple foldable tent made by IHI, and the sterilization effect was measured.
A 30-minute atomization treatment (15-minute atomization + 15-minute retention) showed a sterilization effect of 99.99% or more, confirming that the operating table placed inside the tent could be sterilized in a short time.
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table 1. Bacteria count comparison table before and after treatment
2. A certain car dealer and maintenance shop disinfection device for disinfection and deodorization service during vehicle inspection and inspection

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                    Figure 4. Test scene
An “ozone gas generator” was used for the disinfection and
deodorization service provided at car dealers and maintenance shops during vehicle inspections and inspections. Currently, “ozone gas”, “hypochlorous acid water” and “chlorine dioxide” are mainly used, but there is also the problem of material deterioration due to solvents, so we sought a new disinfection method and received a consultation from ICDL.
We placed bacteria-attached carriers in various places inside a returned passenger car and confirmed the sterilization effect. A 20-minute (15-minute atomization + 5-minute retention) Reclear atomization treatment was found to have a sterilization effect of 99.99% or more.
If the volume is 10㎥, one atomization device can be used for almost all vehicles.
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                  Figure 5. Exam outline

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