US 11,921,021 B2
Gas concentration device, gas detection system, gas concentration method, and gas detection method
Hiroshi Hamasaki, Hiratsuka Kanagawa (JP); and Yoshiaki Sugizaki, Fujisawa Kanagawa (JP)
Assigned to Kabushiki Kaisha Toshiba, Tokyo (JP)
Filed by Kabushiki Kaisha Toshiba, Tokyo (JP)
Filed on Aug. 31, 2021, as Appl. No. 17/462,997.
Claims priority of application No. 2021-048503 (JP), filed on Mar. 23, 2021.
Prior Publication US 2022/0307952 A1, Sep. 29, 2022
Int. Cl. G01N 33/68 (2006.01); A01N 1/02 (2006.01); B01L 3/00 (2006.01); C07C 309/65 (2006.01); C07C 309/73 (2006.01); G01N 1/40 (2006.01); G01N 21/33 (2006.01); G01N 21/64 (2006.01); G01N 27/414 (2006.01); G01N 33/52 (2006.01); G01N 33/532 (2006.01); G01N 33/543 (2006.01); G01N 33/569 (2006.01); G01N 33/72 (2006.01)
CPC G01N 1/4077 (2013.01) [G01N 27/4141 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A gas concentration device comprising:
a first container that includes a first space surrounded by a first partition wall and stores a specimen, the first container configured to store a gas containing an odor component released from the specimen into the first space where a pressure is reduced;
a second container that is connected to the first container by a first path and has a second space surrounded by a second partition wall and configured to store a gas containing the odor component flowing in from the first space;
a pressure control device configured to reduce a volume of the second space and configured to concentrate the gas containing the odor component;
a second path through which a gas containing the odor component inside the second space is discharged; and
a first decompression device that is connected to the first space by a third path and reduces a pressure inside the first space.