EXHAUST HOOD Russian patent published in 2010 - IPC B08B15/02 

FIELD: process engineering.

SUBSTANCE: invention relates to ventilation and can be used in medical, biological and pharmaceutical industries. Proposed exhaust hood comprises rigid carcass accommodating housing that makes working chamber with its front wall accommodating frame to move from top to bottom relative to chamber table-top. Exhaust duct is formed nearby chamber rear wall with the help of screen to communicate with filtration element arranged at the chamber top part. Table-top represents a separate detachable plate and has perforation made along its longer sides. Screen lower part also has perforation. Chamber below said table-top communicates with exhaust duct, horizontal partitions are fitted at the housing top part that make air duct communicated with exhaust duct and outlet branch pipe. Fire filter, blower and sorption filter are mounted inside air duct along air flow.

EFFECT: reduced costs and expanded performances.

10 cl, 5 dwg