Title:
【発明の名称】液体二酸化炭素から微粉雪粒子を生成する装置
Document Type and Number:
Japanese Patent JP3380469
Kind Code:
B2
Abstract:
A system for producing a flow of fine snow particles includes a conduit for providing a pressurized flow of a cryogenic liquid and a nozzle coupled to the conduit, the nozzle having an outlet and an inlet pathway in communication with the conduit. An expansion member is positioned within the nozzle and covers the inlet pathway. The expansion member provides multiple fine channels for passage of the cryogenic fluid into a region of lower pressure, thereby enabling expansion of the cryogenic fluid during passage through the expansion member. In a preferred embodiment, the cryogenic fluid is carbon dioxide and the system parameters are set to enable the cryogenic fluid to enter a solid phase at or near the outlet surface of the expansion member and to exit therefrom as a fine snow particulate.
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Inventors:
Louise Simus
George Rose
Steve McCarty
George Rose
Steve McCarty
Application Number:
JP19725498A
Publication Date:
February 24, 2003
Filing Date:
July 13, 1998
Export Citation:
Assignee:
Praxair Technology Incorporated
International Classes:
F25C3/04; A23L3/375; B05B1/00; B05B1/14; C01B32/55; (IPC1-7): F25C3/04; C01B31/22
Domestic Patent References:
| JP748113A | ||||
| JP5229277B2 | ||||
| JP129216Y2 |
Attorney, Agent or Firm:
Motohiro Kurauchi (1 outside)