Patent ID: 7048625
Filing Date: 2006-05-23
Classification: B01L,B08B,B25H,F24F

Abstract:
1. A clean bench comprising: a housing having a work space in a center, the work space being filled with a filtered atmosphere; a filtering unit disposed on top of the work space and blowing filtered air into the work space through a top plate; a front cover located on a front of the work space and covering the front of the work space while leaving a certain gap in a lower part of the work space; a flow-regulating space under the work space and into which the air from the work space flows through a ventilation plate; a circulation duct connecting the flow-regulating space with the filtering unit for allowing the air in the flow-regulating space to circulate; an intake for drawing outside air into the flow-regulating space and the circulation duct; and a flow regulator extending downward from the ventilation plate to direct the air from the work space to flow downward in the flow-regulating space.