Developed GRABVD, a commercial air purifier that sterilizes with deep ultraviolet LEDs-Attention with the new corona It is possible to sterilize by circulating air with a large air volume-
Sanoki Co., Ltd. (Headquarters: Itabashi-ku, Tokyo, President: Tetsuya Oki, hereinafter "our company") will release the commercial ultraviolet air sterilization fan "GRAB VD" on March 24, 2021. With the new lineup of our brand NEEDS MODELING series, it is possible to sterilize with deep ultraviolet LEDs, which are attracting attention with the new corona. Stanley Electric Co., Ltd.'s deep ultraviolet LED is installed in the air purifier.
"GRAB VD" body
[Background of development]
During the declaration of an emergency in April 2020, the optimistic voice that the corona will end in the summer when the ultraviolet rays fall, it is not possible to sterilize the air where the coronavirus is floating using ultraviolet rays. I was wondering if I was looking into it. As a result of various investigations, I found out that there is a deep ultraviolet LED that emits deep ultraviolet rays that do not exist on the earth but have a sterilizing function against bacteria and viruses. Then, we developed an air purifier using deep ultraviolet LED made in Japan and wanted to help corona-ka with a little power, so our company, whose main business is interior work, launched the ISP Venture Division as an in-house venture. We have started a project to develop an air purifier equipped with UV LEDs.
Naturally, the project failed many times, and we repeatedly started over from the design and solved each difficulty one by one. First, for the selection of deep ultraviolet LEDs, we adopted the long-life deep ultraviolet LEDs of Stanley Electric Co., Ltd., who taught us about the functions and performance of LEDs, optical simulation, etc. In addition, it was a very difficult problem to keep the air sucked in by the air purifier in a certain place and discharge it after sterilization. Therefore, instead of sterilizing the air itself, we switched to sterilizing by adsorbing bacteria and viruses floating in the air on filters. Therefore, we have adopted an electronic dust collection filter (hereinafter referred to as plasma grab filter) that does not deteriorate even when exposed to ultraviolet rays and can collect small particles.
[Mechanism of "GRAB VD"]
Air is sucked in from the bottom of the main body, large substances are caught by two pre-filters, and fine particles such as pollen, bacteria and viruses are positively charged and negatively charged by the ionizer, arranged at 3 mm intervals. Adsorb to multiple filters. Furthermore, the adsorbed substances are sterilized by irradiating them with ultraviolet rays using 16 deep ultraviolet LEDs. In addition, a carbon filter is also installed, which also exerts a deodorant effect at the same time.
[About deep UV LED]
Equipped with 16 deep ultraviolet LEDs that irradiate deep ultraviolet rays of 275 nm, it irradiates bacteria and viruses adsorbed on the plasma grab filter with deep ultraviolet rays to eradicate them. We analyzed the irradiation of deep ultraviolet rays using lighting system optical software, and installed deep ultraviolet LEDs above and below the plasma grab filter to design for efficient irradiation.
The deep UV LED is set to turn off automatically when the main power is turned on and then irradiated for 2 hours. In addition, since it can be turned on at will, it is possible to irradiate before cleaning the filter or at meetings where a large number of people participate.
[About twin turbofans]
Equipped with a fan that can circulate an air volume of 942m3 per hour. The air volume can be changed between strong mode and weak mode. The strong mode is 942m3 per hour and the weak mode is 600m3.
Since it can circulate a large amount of air, it is suitable for large offices and schools, educational facilities such as cram schools and nursery schools, medical institutions such as hospitals, nursing care facilities, and health facilities for the elderly.
Considering a general air purifier, one GRAB VD has an applicable area of 66 tatami mats.
The Ministry of Health, Labor and Welfare recommends avoiding the three "dense", and one of the measures is ventilation in a closed space. "GRAB VD" can increase the ventilation frequency (equivalent ventilation) in the room with a large air volume, so even in the pollen season, when it is hot in summer, when it is cold in winter, etc., it is difficult to open the window in the room. "GRAB VD" can help ventilation. It is also ideal for stores and clinics where ventilation is difficult.
[About plasma grab filter]
The plasma grab filter is an electronic dust collection filter. Even with a large air volume of 942 m3 / h, it has a collection efficiency of 90% * 1 or more for fine particles of 0.3 to 0.5 μm, so it adsorbs PM2.5, bacteria and virus-sized particles as well as pollen floating in the room. I can.
According to the evaluation test * 2 of the airborne virus removal performance of the Kitasato Research Center for Environmental Science, it decreased to 90% or less of the natural decline in 3 minutes and 99% or less of the natural decline in 5 minutes.
Unlike general filtration type fine particle filters, dust and dirt do not clog the filter, so the air volume (suction power) and collection capacity due to clogging do not easily decrease. Our actual measurement values maintain 95% * 3 or more in both air volume and collection efficiency even after 300 hours.
* 1 (1) Not all harmful substances in the air can be removed.
With plasma grab filter
We have not verified with the new coronavirus.
(2) Measurement data by filter unit (according to our research)
* 2 (1) Testing organization: Kitasato Research Center for Environmental Sciences
Test report number 2020_0328 from Kitasei
Test method: Air purifier in a 25m3 test space
By "air volume: 15m3 / min"
Measure changes in virus count
(2) Not all harmful substances in the air can be removed.
Electronic dust filter with new coronavirus
We have not verified it.
(3) The graph is the measurement data by the air purifier (CFTXGF02).
* 3 Our actual measurement value
【maintenance】
In order for our customers to use "GRAB VD" in the best condition, we have built a grabbed support center so that we can provide maintenance by professionals, and we have a system that allows customers all over the country to perform maintenance. We recommend that you perform maintenance 2-3 times a year. (Depending on usage environment, etc.)
【Product Summary】
Product name: GRABVD
Price: Open price
Release Date: March 24, 2021
Size: Overall width (W) 890mm x Depth (D) 330mm x Height (H) 826mm
Weight: 54kg
Power supply: AC100v 50 / 60Hz
Material: Steel
Color: Off-white
Official website: http://www.sun-oki.co.jp/Portals/0/grabvd/
Commercial air purifier "GRAB VD" circulates air with a large air volume and sterilizes bacteria and viruses with deep ultraviolet LEDs
Video URL: https://www.youtube.com/watch?v=HEOo7jRy1gM
【Company Profile】
Trade name: Sanoki Co., Ltd.
Representative: Tetsuya Oki, President and CEO
Location: 2-10-9 Minamitokiwadai, Itabashi-ku, Tokyo 174-0072
Established: June 10, 1971
URL: http://www.sun-oki.co.jp/