Ventilation – Workstation ventilator – Covered workbench chamber
Reexamination Certificate
2005-08-02
2005-08-02
Boles, Derek S. (Department: 3749)
Ventilation
Workstation ventilator
Covered workbench chamber
C454S049000, C454S058000, C126S29900R
Reexamination Certificate
active
06923715
ABSTRACT:
A device for regulating the air volume flow for a laboratory exhaust, has a rectangular housing (6) which can be arranged on the laboratory exhaust. The device is equipped with inflow devices that can be connected to the interior of the laboratory exhaust and with outflow devices (8, 12, 13) that can be connected to an exhaust air system. The interior of housing (6) is divided by a partition (17) into two parts, namely a calming part on the exhaust side and a measurement and regulating part on the outflow side, and these two parts are connected by an air deflection area (18). A rectangular measurement orifice (20, 25) has pressure measurement devices (22, 23, 24, 28, 29) and a rectangular regulating flap (21) arranged one after the other at a distance in the direction of flow between a housing wall and the partition (17).
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Barth Frank
Esch Horst
Kreuzer Konrad
Bayer AG
Boles Derek S.
Safran David S.
Waldner Laboreinrichtungen GmbH & Co. KG
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