초록 ▼

A fluid flow control element is constituted by a fluidic amplifier having an interaction region shaped to provide side walls leading to a pair of fluid flow outlets. The fluid flow inlet for the fluidic amplifier has positioned adjacent thereto at least one control fluid passageway, and the flow of

A fluid flow control element is constituted by a fluidic amplifier having an interaction region shaped to provide side walls leading to a pair of fluid flow outlets. The fluid flow inlet for the fluidic amplifier has positioned adjacent thereto at least one control fluid passageway, and the flow of fluid to the outlet passages is controlled by at least one pivoted valve or flap element pivoted between two positions for controlling flow fluid from the fluid inlet to a selected one of a pair of fluid flow passageways or outlets. In the preferred embodiment the fluid flow inlet and outlet and the interaction chamber are such that the fluid pressure in the chamber is always above any pressure in the load passageways and fluid from the fluid flow inlet flows out from the chamber through the control passage. The pivoted valve or flap element, in the preferred embodiment is flat so that it is balanced relative to gravity as well as aerodynamically, so that it will not change position due to back pressures as when outlet passages or receivers are partially or completely blocked and does not cause any torque on the valve element about said pivot and hence will remain in the control position despite severe back loading. The invention is described in relation to a low pressure system, such as automobile air flow systems wherein a number of the unique aspects of the invention are utilized.

대표청구항 ▼

In a fluid flow control element including a fluid amplifier including a chamber having an interaction region, a fluid flow inlet means and at least one control passageway adjacent said fluid flow inlet, a fluid flow outlet means downstream of, and substantially aligned with said fluid flow inlet, a

In a fluid flow control element including a fluid amplifier including a chamber having an interaction region, a fluid flow inlet means and at least one control passageway adjacent said fluid flow inlet, a fluid flow outlet means downstream of, and substantially aligned with said fluid flow inlet, a pair of load passageways branching at a branch point from said fluid flow outlet means, a valve element, pivot means mounting said valve element for rotation, by fluid flow forces of fluid flowing through said fluid flow inlet, at said branch point to direct fluid to flow through a selected one of said load passageways, the improvement wherein said fluid flow inlet, said fluid flow outlet means and the spacing between said inlet and outlet means are such that the fluid pressure in said chamber is always above any pressure in said load passageways and fluid can only flow from said chamber through the selected one of said load passageways and said at least one control passageway, whereby said valve element is rendered relatively insensitive to load conditions at said pair of load passageways, and a control member for blocking flow of fluid through said at least one control passageway.