US 11,992,832 B2
Safety cabinet
Takeshi Kaneko, Tainai (JP); and Takeshi Matsumura, Tainai (JP)
Assigned to Hitachi Industrial Equipment Systems Co., Ltd., Tokyo (JP)
Filed by Hitachi Industrial Equipment Systems Co., Ltd., Tokyo (JP)
Filed on Jun. 11, 2021, as Appl. No. 17/345,750.
Claims priority of application No. 2020-161661 (JP), filed on Sep. 28, 2020.
Prior Publication US 2022/0097036 A1, Mar. 31, 2022
Int. Cl. B01L 1/04 (2006.01); F24F 8/108 (2021.01)
CPC B01L 1/04 (2013.01) [F24F 8/108 (2021.01); B01L 2200/0631 (2013.01); B01L 2200/0684 (2013.01); B01L 2300/04 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A safety cabinet that includes an opening portion in a front surface of a work space and a front shutter that slides in an upward and downward direction to close a part or an entirety of the opening portion, and supplies purified air through a HEPA filter into the work space from above and sucks air from front and rear slits below the work space,
wherein
the front shutter includes a small window shutter that opens by sliding in a lateral direction in a substantially central portion in the upward and downward direction, and
a worker can work by inserting arms into the work space from below the front shutter to perform work in a sitting posture, and the worker can work by directly inserting arms into the work space through an opening by sliding the small window shutter to perform work in a standing posture.