Microvalve
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United States of America Patent
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-
Dec 14, 1999
Grant Date -
N/A
app pub date -
Jan 28, 1998
filing date -
Dec 11, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A microvalve for controlling a fluid flow comprises a valve body provided with a valve opening having a sealing edge, and a valve plate provided with fluid openings. The valve plate is adapted to be moved perpendicularly to the valve body in such a way that, at a first position, said valve plate closes the valve opening, whereas, at a second position, it is perpendicularly spaced from said valve opening in such a way that a flow cross-section defined by said valve opening and said valve plate is decisively determined by the distance between the sealing edge and the valve plate. The contour of the sealing edge of the valve opening is chosen such that the length of the sealing edge exceeds the length of a sealing edge of a square valve opening which is equal in area.
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