Patent ID: 9494328
Filing Date: 2016-11-15
CPC Classification: B01D,B01L,B08B,B25J,F24F,Y10S

Claim Text:
1. A filter unit for air purification attached to an outside of an air outlet of a work chamber so as to be connected to said work chamber for purifying air discharged from said work chamber comprising: a rectangular cylindrical body having a first wall portion provided with an air inlet portion through which the air discharged from said air outlet is introduced and a second wall portion formed so as to cross said first wall portion and provided with an air discharge port portion through which the introduced air is discharged; a filter member provided in said cylindrical body and for filtering said introduced air, wherein said filter member is provided with its air discharge surface at said air discharge port portion so as to constitute an outer wall surface of said air discharge port portion and to discharge said filtered air; an annular seal member surrounding an outer periphery portion of said air inlet portion so as to oppose said work chamber of said first wall portion; and a detachable lid body closing said air inlet portion in an airtight manner, wherein, when the filter unit is connected to said work chamber, said air inlet portion is attached so as to oppose an air outlet of said work chamber so that said seal member abuts an outer wall portion of said work chamber in an airtight manner.