METHOD AND APPARATUS FOR PROVIDING SUBSTANTIALLY C

专利名称：METHOD AND APPARATUS FOR PROVIDING

SUBSTANTIALLY CONSTANT AIR FLOWTHROUGH THE DOOR OPENING OF A FUMECUPBOARD

发明人：BÖRRESEN, Anders,HOMMERSTAD, Terje申请号：EP91905968.3申请日：19910308公开号：EP0518970B1公开日：19950614

摘要：the method presented is intended to provide a nearly constant air flow throughthe door opening of a fume hood used in laboratory work, or of the same type,

irrespective of the size of the opening of the door of the enclosure.the door opening ofthe hood is first detected, and the flow of exhaust air from the hood is continuouslycontrolled in response to the opening of the door is detected.a device is used to achievea nearly constant air flow, a measuring device (18, 20, 26) is positioned to produce acontinuous signal modulation as a function of the opening of the door (12), the signalcommanding a regulator (34, 36) located in the conduct of (14) from the exhaust of thefume hood (10).

申请人：ABB FLAEKT AKTIEBOLAG

代理机构：Rosenquist, Per Olof

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