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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2018/047409
Kind Code:
The present invention accurately manages the number of fine particles in a workspace and prevents fine particles from mixing with an experimental material. An isolation device for supplying a workspace with clean air resulting from dust filtration by an air cleaning means, said isolation device being provided with: a measurement probe that is for air intake and is disposed in the workspace; a particle counter for measuring the fine-particle counts for a plurality of particle sizes in the workspace air taken in by the measurement probe and outputting the measurements; a storage unit for storing, for each of the plurality of particle sizes and for work times and non-work times, management fine-particle counts at which the number of fine particles per unit volume is determined to be large; a cleanliness determination unit for determining cleanliness by comparing the fine particle counts for the plurality of particle sizes measured by the particle counter and the management fine-particle counts for the plurality of particle sizes stored by the storage unit; and an output unit for outputting an alarm if the cleanliness determination unit determines that the work-time/non-work time fine particle count for a particle size in the workspace during operation exceeds the corresponding management fine-particle count.

ONO Keiichi (. 46-1, Tomioka, Tainai-sh, Niigata 08, 〒9592608, JP)
SUZUKI Tomoyuki (. 46-1, Tomioka, Tainai-sh, Niigata 08, 〒9592608, JP)
Application Number:
Publication Date:
March 15, 2018
Filing Date:
May 12, 2017
Export Citation:
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HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (3 Kanda Neribei-cho, Chiyoda-ku Tokyo, 22, 〒1010022, JP)
International Classes:
G01N15/06; B01L1/00
Attorney, Agent or Firm:
SEIRYO I.P.C. (24-2, Hatchobori 2-chome Chuo-k, Tokyo 32, 〒1040032, JP)
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