Title:
MULTI-LAYER VACUUM HEAT INSULATING METHOD AND HEAT INSULATING DUPLEX TUBE
Document Type and Number:
Japanese Patent JP2607417
Kind Code:
B
Abstract:
PURPOSE: To maintain vacuum heat insulating effect for long time and withstand the transport and storage of hot fluid by suppressing the generation of out gas by secular change as low as practicable.
CONSTITUTION: A multi-layer Mylar material 5 which is interposed in a space 3 in an inner and outer duplex structure kept in vacuum is made of a stainless steel sheet at least one surface of which is bright-finished and, when it is sucked by vacuum, degassing is given by heating. Also a ceramic spacer 4 is interposed in the space 3 between inner and outer tubes.
Inventors:
Ochiai, Hideo
Takahashi, Fumio
Takahashi, Fumio
Application Number:
JP1993000022456
Publication Date:
February 13, 1997
Filing Date:
February 10, 1993
Export Citation:
Assignee:
NISSAN TECHNO SERVICE KK
International Classes:
F16L9/18; F16L59/02; F16L59/06; F16L59/14; (IPC1-7): F16L59/06; F16L9/18; F16L59/02; F16L59/14
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