Safety cabinet and exhaust system
AssigneeHitachi Industrial Equipment Systems Co., Ltd.
InventorTakeshi KANEKO
Life of this patent
Estimating the term…
Abstract
A technique that can prevent a worker from being exposed to contaminants when an abnormality has occurred in a remote blower of a building is provided. A safety cabinet includes: an opening portion for exhausting air in a work space; an exhaust duct connected to the opening portion; a remote blower that sends the air in the work space to outdoors from the exhaust duct; a backup exhaust duct branched from the exhaust flow path of the exhaust duct; a backup remote blower that sends the air in the work space to outdoors from the backup exhaust duct; and a safety cabinet control unit that transmits an startup signal to the backup remote blower when it detects that the remote blower has stopped operating.
Claims10
A safety cabinet comprising:
- an opening portion for exhausting air in a work space;
- an exhaust duct connected to the opening portion;
- a remote blower that sends the air in the work space to outdoors from the exhaust duct;
- a backup exhaust duct branched from the exhaust flow path of the exhaust duct;
- a backup remote blower that sends the air in the work space to outdoors from the backup exhaust duct;
- and
- a control unit that transmits an startup signal to the backup remote blower when the control unit detects that the remote blower has stopped operating.
A safety cabinet comprising:
- an opening portion for exhausting air in a work space;
- an exhaust duct connected to the opening portion;
- a remote blower that sends the air in the work space to outdoors from the exhaust duct;
- a second opening portion provided in the flow path from the work space to the opening portion;
- a backup exhaust duct connected to the second opening portion;
- a backup remote blower that sends the air in the work space to outdoors from the backup exhaust duct;
- and
- a control unit that transmits an startup signal to the backup remote blower when the control unit detects that the remote blower has stopped operating.
An exhaust system in which a plurality of safety cabinets, each comprising an opening portion for exhausting air in a work space, are connected to a single exhaust duct,
- wherein the exhaust duct comprises;
- a remote blower that sends the air in the work space to outdoors from the exhaust duct;
- and
- an electric valve for adjusting the airflow through the exhaust duct;
- wherein each of the plurality of safety cabinets further comprises:
- a backup exhaust duct branched from the exhaust flow path of the exhaust duct;
- a backup remote blower that sends the air in the work space to outdoors from the backup exhaust duct;
- a backup electric valve for adjusting the airflow through the backup exhaust duct;
- and
- a control unit;
- wherein at least one of the control units of the plurality of safety cabinets transmits an startup signal to the backup remote blower, a close signal to the electric valve, and an open signal to the backup electric valve when the control unit detects that the remote blower has stopped operating.
Dependencies are inferred from the claim text.