38results about How to "Flow disturbance" patented technology

The invention relates to a fan platform of a bypass turbomachine having a primary stream and a secondary stream. The platform defines a portion of the surface of the nose around which the primary stream flows and that carries blades extending radially outwards from said platform. Between two adjacent blades, the platform has at least one rib projecting into the space between the two blades, said rib being designed to participate in compressing the primary air stream.

A stator blade ring is provided with which the possibilities of thermal deformation and a decrease in strength can be reduced, the shape flexibility can be ensured, and the compression performance can be improved. It includes stator blade segments (21) in each of which an inner shroud portion (31) and an outer shroud portion (29) divided corresponding to one stator blade (27) are provided at both ends of the stator blade (27) so as to be formed as a single part, and connecting members (23) that are formed of arch-shaped plates and are disposed on at least one of the inner shroud portions (31) and the outer shroud portions (29) of the stator blade segments (21) adjoining in a circumferential direction, on a side opposite to the stator blades (27). The stator blade segments (21) are welded to the connecting members (23) at a portion of the length thereof in the circumferential direction.

In a device for monitoring the heart cycle of a human heart such that coronary flow may be maintained at a desired level, and a heart stimulator including such a device, the monitoring device is connectable to a first sensor adapted to be positioned at a first location of the heart and arranged for sensing cardiac wall movements at the first location, and to a second sensor adapted to be positioned at a second location of the heart and arranged for sensing cardiac wall movements at said second location. Processing circuitry receives output signals from the first and second sensors, which output signals are indicative of myocardial relaxation at said first and second locations. The processing circuitry determines the time of myocardial relaxation at the first and second locations, and provides a diastolic synchronization signal indicative of the synchrony in the time of myocardial relaxation between the first location and the second location.

Disclosed is a stirring tool which is capable of fully and efficiently mixing ingredients such as mayonnaise even in relatively small amounts. A stirring blade is mounted on a rotating shaft which is rotated by a driving force. A hollow blade cover is provided which covers the periphery of the rotating stirring blade and a portion of the edge of the stirring blade constitutes a long edge which is an edge part that faces the inner circumferential face and which extends along the inner circumferential face of the blade cover. Openings which are holes and an opening are provided at the end of the blade cover and in a peripheral wall of the blade cover for circulation of the stirred ingredients. The long edge can be seen through the holes in the peripheral wall when the rotating blade rotates.

A water-cooling head and a method for making the same. A first cover and a second cover form a water-cooling head. An intake pipe and a drainpipe extend from both ends of the first cover. A plurality of heat-conducting particles is fixedly provided inside of the second cover and irregularly stacks to form a flowing path microstructure. The outside of the second cover has a contacting surface for absorbing the heat generated by the heat source and conducting the heat to the heat-conducting particles. When the cooling liquid enters the water-cooling head via the intake pipe, the flowing path microstructure disturbs the flow of the cooling liquid to prolong the staying time of the cooling liquid within the water-cooling head. In this way, the cooling liquid can be sufficiently heat-exchanged with the heat-conducting particles and then drains out from the drainpipe.

Disclosed is a nonstop traffic system using a half (½) cloverleaf and a traffic method applied with the same, including a loop-type traffic system for connecting a half (½) cloverleaf (100) to half (½) underground U-turn lanes (200E, 200W, 200S and 200N) that can make vehicles drive and pedestrians walk nonstop in every direction without relation to traffic signals at existing intersections or roadways for left-turn and U-turn, and crosswalks. The half (½) cloverleaf (100) is constructed at existing intersections and the half underground U-turn lanes (200E, 200S, 200S and 200N) are constructed on left-turn roadways in existing four directions (East, West, South and North) that connect to the intersections, U-turn roadways and crosswalks. As mentioned, all structures in the nonstop traffic system using the half (½) cloverleaf in a loop-type that connects the half (½) cloverleaf (100) to the half (½) underground U-turn lanes (200E, 200W, 200S and 200N) in four directions (East, West, South, North) is adopted to the bisectional construction method, thus the height of all lanes can be differentiated. As mentioned, the half (½) cloverleaf (100) includes a half (½) overpass (10), a half (½) underpass (20), a half (½) underground U-turn roadway (30) and a half (½) ground pedestrian bridge (40). Moreover, the half (½) underground U-turn lanes (200E, 200W, 200S and 200N) includes a half (½) overpass (50), a half (½) underground U-turn roadways (60) and half (½)

A dialysis catheter is disclosed which comprises a catheter main body and a closure member. The catheter main body includes a first lumen which communicates with a tip-end hole and a second lumen which communicates with a side hole. The closure member has a shape in which a tip-end side of the closure member is inclined with a reduced diameter for closing off a tip-end opening. The side hole is a long hole extending in the catheter long-axis direction. The major axis of the side hole is at least 1.5 times the outer diameter of the catheter, and the minor axis is between 0.5 and 0.9 times the outer diameter. A base-end side of the closure member extends to the position of the side hole and seals the tip-end region thereof.

A fuel injection system for an annular combustion chamber of a turbomachine, the system comprising support means for supporting and centering a fuel injector head, and a bowl arranged downstream from the support means and including at its downstream end an annular collar that extends radially outwards and that is cooled by air impacting against its upstream radial surface, and including on said surface means for disturbing the flow of cooling air and for increasing the heat exchange area between the air and the collar.

The present invention relates to a thermal flowmeter capable of sensing a flow rate in either direction, having a linear output characteristic, and producing a stable output without impairing the response characteristic. In the thermal flowmeter, a laminate is fitted in a channel space formed in a body, forming a main channel. The laminate includes a mesh sheet so that a mesh portion is provided between the main channel and a sensor channel. A measurement chip is provided with an upstream temperature sensing resistor, a downstream temperature sensing resistor, a heating resistor, and a fluid temperature sensing resistor. By an electric circuit, the heating resistor and the fluid temperature sensing resistor are controlled to provide a constant temperature difference. Accordingly, the flow rate of a fluid under measurement is measured based on a temperature difference between the upstream and downstream temperature sensing resistors.

A material for an organic electroluminescence device including a phosphorescent metal complex containing a monoanionic bidentate ligand represented by the following formula (A1-1) or formula (A3-1) as defined in the specification and a non-radiative metal having an atomic weight of 40 or more, an organic electroluminescence device including the material for an organic electroluminescence device, and a light emitting unit, a display unit and an illumination unit each including the organic electroluminescence device are provided.

A plurality of guide vanes (34) in a variable turbine geometry turbocharger (10) regulates a flow of exhaust gas. The guide vanes (34) are selectively adjustable between an open position to allow the flow of exhaust gas to drive a turbine wheel (24) and a closed position to block the flow of exhaust gas. A first flow feature (58) is disposed on first (44) and second (46) edges of the guide vanes (34) to disturb the flow of exhaust gas to prevent leakage of exhaust gas around the first (44) and second (46) edges. A second flow feature (64) is disposed on front (60) and rear (62) surfaces of the guide vanes (34) to channel the flow of exhaust gas between adjacent guide vanes (34) when the guide vanes (34) are in the open position to prevent swirling and / or cross flow of the exhaust gas.

A blade for a turbomachine gas turbine, the blade having a cooling circuit comprising at least one cooling cavity with a high aspect ratio extending radially between a root and a tip of the blade, and at least one air admission opening at a radially inner end of the cavity to feed it with cooling air, at least one of the walls of the cooling cavity being provided with a plurality of indentations so as to disturb the flow of cooling air in said cavity and increase heat exchange.

An apparatus for dispersing and melting flowable substances includes axis-parallel supporting shafts rotatable in the same direction. Screw elements with the same direction of thread are fitted on the shafts so as to rotate in unison and intermesh. The screw elements have screw portions disposed at a progressive angular offset from each other with the same sense of rotation so as to form faces. The screw elements are of single- or double-flighted form. The axial length of each screw element is a fraction of the pitch of the screw crest of each screw portion.

A guide shoe is provided, which exhibits a lower level of slide resistance between a chain and a slide surface at the time of the sliding of the chain, is able to keep a sufficient lubricant on the slide surface even at the time of the starting of an engine, and produces less noise and wear. The guide shoe includes: a slide surface that slidably guides a link plate of a traveling chain; and a plurality of guide protrusions provided on the slide surface, the guide protrusions protruding in a vertical direction from the slide surface, wherein each of front surfaces of the guide protrusions is formed to have a convex curved surface at least from a part thereof on an upstream side to a top part thereof in a chain traveling direction.

Refining elements for use with disc refiners for the processing of fibrous materials are disclosed. The refining element include a refining surface having a plurality of bars and intermediate grooves, with the bars having an upper surface and a pair of side surfaces defining longitudinal edges, with the plurality of bars including a plurality of recesses disposed along at least one of the longitudinal edges, the recesses including open portions in both the upper surface and one of the side surfaces thereof.

Provided is a compressor arrangement in an air line supplying charged air to a combustion engine. The compressor arrangement comprises a compressor unit comprising a housing including an air intake passage, a compressor wheel arranged in said air intake passage, and an additional air passage allowing recirculation of air from the air intake passage in a position radially outwardly of a part of the compressor wheel. The additional air passage is configured to allow recirculation of air to an air conduit delivering an air flow to the air intake passage of the compressor unit.

Disclosed are an annular-type distributor having a multiple slit layer including at least two annular layers, which are stacked while being spaced by a predetermined distance and in which at least one slit is formed so as to receive or discharge fluid; a reactor or a heat exchanger having the annular-type distributor; and a method of producing unsaturated aldehyde or unsaturated acid from olefin by catalytic gas phase oxidation reaction using the reactor.

An internal combustion engine 5 includes an intake valve spring 60 including a closely-wound section 62 and a sparsely-wound section 63. The closely-wound section 62 is provided so that elemental wire portions thereof are closely in contact with each other in the direction of the coil axial line L1 while an intake valve closes an intake port. The sparsely-wound section 63 is provided so that elemental wire portions thereof are spaced apart from each other in the direction of the coil axial line L1 while the intake valve closes the intake port. The coil outer diameter D62 of at least a part of the closely-wound section 62 is smaller than the coil outer diameter D63 of at least a part of the sparsely-wound section 63.

Labyrinth seal for a turbine engine, in particular of an aircraft, including a rotor element rotating about an axis of rotation (A), and a stator element extending around the rotor element (14), the rotor element including a series of annular lip(s) extending radially outwards and surrounded by at least one abradable element carried by the stator element, each lip comprising an inner peripheral body portion, an outer peripheral body portion, an upstream annular face of impact of an air flow during operation and a downstream annular face, wherein at least one lip includes, on the inner peripheral body portion thereof and / or the outer peripheral body portion thereof, through-orifices for the passage of air extending between the upstream and downstream annular faces.

A centrifugal fan with a permanent-magnet brush-less motor system is provided with a volute, an outer rotor motor installed in the volute through a bracket, and an impeller externally sleeved on the outer rotor motor and positioned in the volute. The impeller is connected with the outer rotor motor and consists of a volute board and side boards on two sides of the volute board. The volute board is formed with an opening at a part on the horizontal plane and a bridge arch-type radiator having radiating fins matched with the opening is installed at the opening. The centrifugal fan improves heat dissipation with load changes allowing the driver to operate at lower temperatures that improves operating efficiency and service life. The larger the load, the better the heat dissipation effect of the driver.