Title:
DRY ICE INJECTION DEVICE
Document Type and Number:
Japanese Patent JP2023068830
Kind Code:
A
Abstract:
To provide a dry ice injection device in which a needle valve is not blocked even when using the needle valve as an orifice for adiabatically expanding liquefied carbon dioxide gas and generating dry ice-snow.SOLUTION: A dry ice injection device comprises: a liquefied carbon dioxide gas supply path L1 for supplying liquefied carbon dioxide gas; a needle valve 4 positioned in the liquefied carbon dioxide gas supply path L1; a granulation part 3 which communicates with the liquefied carbon dioxide gas supply path L1 via the needle valve 4, and in which liquefied carbon dioxide gas adiabatically expands and generates dry ice; and an injection nozzle 2 for injecting the dry ice. A tip of the granulation part 3 is positioned in a space inside the injection nozzle 2. The needle valve 4 has: an internal space 4A; a first flow channel 4a and a second flow channel 4b which communicate with each other via the internal space 4A; a stem 4B positioned in the internal space 4A; and a tip 4C positioned at a tip of the stem 4B. The second flow channel 4b is connected to the liquefied carbon dioxide gas supply path L1, and the first flow channel 4a is connected to the granulation part 3.SELECTED DRAWING: Figure 2
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Inventors:
UENO SHO
Application Number:
JP2021180195A
Publication Date:
May 18, 2023
Filing Date:
November 04, 2021
Export Citation:
Assignee:
TAIYO NIPPON SANSO CORP
NIPPON EKITAN CORP
NIPPON EKITAN CORP
International Classes:
B24C5/04; B01J2/02; B05B7/04; B08B7/00; B24C1/00; B24C11/00
Attorney, Agent or Firm:
Patent Attorney Shiga International Patent Office
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