Patent ID: 7527086
Filing Date: 2009-05-05
Classification: F15D

Abstract:
1. A double-acting device for generating a synthetic jet, comprising: a chamber having a cavity for a working fluid; a separating element dividing said chamber into at least two sub-chambers; a control system connected to said chamber for controlling said separating element to act reciprocatingly; an input system connected to said chamber for inputting said working fluid to said chamber therethrough, wherein said input system comprises at least one non-movable rectification element causing that the flow rate is relatively lower at a flow direction through said input system out of the sub-chamber and is relatively higher at a flow direction through said input system into the sub-chamber; and an output system connected to said chamber for outputting said working fluid from said chamber therethrough, wherein said output system comprises at least two sets of passages respectively connected to said at least two sub-chambers, so that when said working fluid is pushed and pulled through said at least two sets of passages by a reciprocating action of said separating element, a train of vortices are generated and enhanced by two counter streams of working fluids simultaneously pushed and pulled through said at least two sets of passages and a non-zero-net-mass-flux fluid is generated through a designed structure and a defined arrangement of said input system and said output system.