526 results about "Suction flow" patented technology

The outer skin (100) of an aerodynamic body (40) has perforations (200) arranged in particular patterns in respective spanwise extending groups or bundles (250). Each perforation is preferably a micro-slot with a length of 100 to 3000 μm and a width of 50 to 250 μm. Air is sucked through the micro-slots from the boundary layer flowing over the outer skin, to achieve boundary layer control. In each bundle, the pattern, size, orientation, and other parameters of the micro-slots are designed to achieve mutual destructive interference of flow disturbances arising due to the suction, to minimize the excitation of flow instabilities in the boundary layer. Particularly, the spatial spectrum of the perforation pattern of a given bundle is essentially absent of significant energy at predetermined wavelengths of predetermined flow instabilities that otherwise appear in the boundary layer air flow. The aerodynamic body further includes supporting ribs (300) extending parallel to the perforation bundles (250) and a perforated inner plate (400) providing a throttling control of the suction flow through groups of the bundles.

A system for producing hydrocarbon fluids from a subsea formation includes at least one producing well penetrating the formation for producing hydrocarbon fluids. At least one dummy well is hydraulically connected to the at least one producing well for routing the hydrocarbon fluids from the producing well to the dummy well. At least one pump is disposed in the at least one dummy well. The pump takes suction flow from the dummy well and boosts the flow energy of the discharge flow of hydrocarbon fluids.

A suction connection arrangement for a compass saw includes a suction connection element (26) for connecting suction flow producing apparatus with the compass saw, a suction channel (24) for connecting the suction cross-section (18) of the saw with the suction connection element and completely separable from the compass saw (2), and a connection device (30) for releasably connecting the suction connection elements (26) with the saw housing (4).

A suction catheter system is described with a suction nozzle that can extend from a guide catheter of the like. The suction nozzle can be positioned by tracking the suction nozzle through a vessel while moving a proximal portion of the suction extension within the lumen of the guide catheter. A suction lumen extends from the proximal end of the guide catheter through at least part of the guide catheter central lumen and through the suction tip. Desirable suction flow can be established using the guide lumen to facilitate the suction. Also, a delivery catheter is described with an elastic tip that can track closely over a guidewire. The elastic tip of the delivery catheter can be expanded to provide for the delivery of medical devices past the tip.

An inhalation device may include a control and an air pump that is connected to the control. The air pump is controlled by the control such that the air pump supplies an inhalation flow, or inhalation volume or both according to a predetermined time course to a nebulizer connected to the air pump. The inhalation flow, inhalation volume or both is controlled by controlling the air pump, rather than by using valves.

An apparatus and method for delivering a fluid using non-mechanical lock hopper eductor assembly. The assembly including at least one lock hopper coupled to an eductor motive fluid inlet, a source of a treatment material and a suction flow outlet. The lock hopper configured to contain therein a pressurized treatment fluid as an output suction flow. The lock hopper is coupled to an eductor pump assembly. The eductor pump assembly including a suction chamber in fluidic communication with the eductor motive fluid inlet, the suction flow outlet and a fluid mixture outlet. The suction chamber configured to output a fluid mixture to a mixing chamber coupled to said fluid mixture outlet and configured to mix the fluid mixture therein. The eductor pump assembly further including an expansion feature coupled to said mixing chamber and configured to expand the fluid mixture therein for delivery to a downstream component.