70results about How to "Suppress eddy current" patented technology

In a plasma processing apparatus including a vacuum-evacuable processing chamber, a first lower electrode for supporting a substrate to be processed thereon is disposed in the processing chamber and an upper electrode is disposed above the first lower electrode to face the first lower electrode. Further, a second lower electrode is disposed under the first lower electrode while being electrically isolated from the first lower electrode. A processing gas supply unit supplies a processing gas into a space between the upper electrode and the first lower electrode. A first high frequency power supply unit applies a first high frequency power of a first frequency to the first lower electrode, and a second high frequency power supply unit applies a second high frequency power of a second frequency higher than the first frequency to the second lower electrode.

The invention discloses a method for making flat active shielding gradient coil, relating to the technique of flat active shielding gradient coil used in the MRI system. The method comprises the following steps of: making initial proposal according to the design index; using gradient magnetic field inversion calculation software to perform analog calculation to obtain the original design proposal; using large commercial magnetic field simulation calculation software to perform forward verification calculation to the original design proposal; amending repeatedly the design proposal by means of inversion calculation and forward calculation to obtain the primary proposal of the gradient coil; carrying out trail production of the gradient coil according to the primary proposal; testing the related technical data and enhancing the design proposal according to the result of the test to obtain high-performance flat active shielding gradient coil. The gradient coil made by the method of the invention can generate strong gradient magnetic field with uniform linearity and fast switching and can effectively avoid eddy current.

The present invention provides a heating cooking device, the hot air blown from a hot air circling unit can be evenly circled in a oven body and seek to equalization heating distribution. In order toheat the food contained in the oven body (2) by the hot air oven, the heating cooking device has a hot air circling unit comprising a hot air heater (7) and a hot air fan (6), wherein a curve shape portion (S) having a depressed inner side is arranged at least one of peripheral surface of the peripheral surfaces of the oven body (2) blowing hot air from the hot air circling unit.

A filter is press-inserted into a mounting bore of an injector. The filter has an inlet section at an opening-end fuel inlet side and a filter section which has a number of holes. The bottom of the filter section is hemispherically-shaped so that a flow area formed between the outer surface of the hemispherical bottom portion and the inner round surface of the mounting inlet bore widens gradually to reduce pressure loss effectively.

A semiconductor device (1) includes a wiring (10) and dummy conductor patterns (20). The wiring (10) is a wiring through which a current with a frequency of 5 GHz or higher flows. Near the wiring (10), the dummy conductor patterns (20) are formed. A planar shape of each of the dummy conductor patterns (20) is equivalent to a shape with an internal angle larger than 180°.

The invention relates to a suspended spraying type metal organic chemical vapor deposition (MOCVD) reactor, which can be used for the epitaxial growth of light emitting diodes (LEDs) on a large scale. The suspended spraying type MOCVD reactor comprises a nozzle, a base, a cover plate, flow diversion holes and a reaction zone, wherein the nozzle is arranged in the center of the base and comprises an upper nozzle and a lower nozzle; the lower nozzle is positioned on the lower part of the upper nozzle; the upper nozzle and the lower nozzle are provided with two radial channels respectively; the base comprise a large graphite disk; small graphite disks are arranged in the large graphite disk along the circumferential direction; wafer substrates are arranged in each small graphite disk along the circumferential direction; the bottom of the large graphite disk is provided with a revolution driving mechanism; the bottom of each small graphite disk is provided with an autorotation drive mechanism; and the flow diversion holes are formed on the inner wall of the cavity of the reaction zone along the circumferential direction. The suspended spraying type MOCVD reactor can improve the deposition uniformity of thin films and the utilization rate of source materials, prolong the service life of the graphite disks of the base, improve the introduction of source gas and the distribution of carrier gas, optimize the designs of the size of the reactor and the curve surface of the cover plate and prevent the generation of eddy current.

The novel bridge vortex-induced vibration suppression device is characterized in that the novel bridge vortex-induced vibration suppression device comprises a plurality of suppression assemblies composed of protective railings and grids, the protective railings are longitudinally arranged on a bridge floor main beam, heightening grids are transversely arranged at the bottoms of the protective railings, and the grids are transversely arranged at the upper portions of the protective railings; the centers of the two ends of the grid and the heightening grid are movably connected with the protective barrier and can be turned over and opened around the joint. According to the utility model, the formation of vortex vibration is inhibited from the source, the grid can be completely opened at a dangerous wind speed, the wind drag coefficient is reduced, the main beam is prevented from being subjected to an overlarge wind drag load, and the opening height of the grid can be adjusted in a targeted manner by the intelligent grid according to the condition of the wind speed, so that the generation of eddy current of the whole bridge is better inhibited. The system is an important component ofan intelligent control system.

A thrust generating apparatus is provided that can transform a spouting water flow having a small diameter into a water flow having a large diameter, and that can be provided at the bow or the stern end. A bell-shaped nozzle is coupled to an ejection port of a pump water flow, a ring having a blade-shaped cross section is disposed inside the nozzle, and a shell-shaped cone is disposed inside the ring on the center line of a water flow. Thereby, an ejection flow is straightened, and a thrust is generated. In addition, the bottom of the cone is open, a slit is further provided at a shoulder portion of the cone forward of the ring, and the water flow inside the cone is in communication with a water flow outside the cone. Furthermore, a rotating door is provided that enables the nozzle to pivot toward a shell plating opening on a port side or a starboard side, and that closes or opens the shell plating opening in accordance with the position of the nozzle.

A micro-fabricated electromagnetic device is provided for on-circuit integration. The electromagnetic device includes a core. The core has a plurality of electrically insulating layers positioned alternatingly between a plurality of magnetic layers to collectively form a continuous laminate having alternating magnetic and electrically insulating layers. The electromagnetic device includes a coil embedded in openings of the semiconductor substrate. An insulating material is positioned in the cavity and between the coil and an inner surface of the core. A method of manufacturing the electromagnetic device includes providing a semiconductor substrate having openings formed therein. Windings of a coil are electroplated and embedded in the openings. The insulating material is coated on or around an exposed surface of the coil. Alternating magnetic layers and electrically insulating layers may be micro-fabricated and electroplated as a single and substantially continuous segment on or around the insulating material.

The invention discloses a gas spraying head and a deposition device. The gas spraying head comprises a cooling plate with an upper surface and a lower surface opposite to each other; the cooling plate includes a center area and a peripheral area; the peripheral area includes multiple cooling pipe areas; each cooling pipe area has a set of cooling pipes; one set of cooling pipes includes multiple arc pipe sections arranged from the center to the edge of the cooling plate in parallel; all the arc pipe sections are positioned on concentric circles with different radius; multiple connecting parts are arranged between the multiple arc pipe sections and the adjacent arc pipe sections; multiple ventilation grooves are formed among the connecting parts; the ventilation grooves penetrate through the cooling plate along the side walls of the adjacent arc pipe sections, and are positioned on the concentric circles with different radius; in one cooling pipe area, one set of ventilation grooves formed by the multiple ventilation grooves on the concentric circles with the same radius are communicated to a first gas output port and a second gas output port along with radius increment; and the center area includes multiple intake ports penetrating through the cooling plate. The gas spraying head can improve the film forming quality.

A bearing, which has a first bearing ring, a second bearing ring, a rolling element interposed between the two bearing rings and a claw pole generator-type power generation unit. The bearing has a substantially space-neutral power generation unit which has a high filling factor for the induction coil. The first claw of the claw ring is connected to a magnetically conducting section of the body of the first bearing ring in a magnetically conducting fashion. The magnetic poles of the pole pairs are mounted so as to be connected to a magnetically conducting section of the body of the second bearing ring in a magnetically conducting fashion and the magnetic circuit is substantially closed via the two magnetic sections and the rolling element.

The invention relates to an electrocardiograph sensor mat (100), the mat (100) comprising a multitude of electrodes (104) for acquiring cardiac signals and a plug (200), wherein the electrodes (104) are connected to the plug (200) by electric wires (102), wherein the wires (102) are segmented by switches (202), wherein the switches (202) are switchable between a closed state and an open state, wherein in the closed state the electrodes (104) are electrically connected to the plug (200) and wherein in the open state the electrodes (104) are electrically isolated from the plug (200).

The invention relates to an eddy current suppression structure, and the structure comprises a magnetostriction layer and an insulating dielectric layer, wherein the insulating dielectric layer is arranged in the magnetostriction layer and is used for breaking eddy current so as to suppress eddy current loss of a bulk acoustic wave magnetoelectric antenna. According to the invention, the insulatingdielectric layer is inserted into the magnetostriction layer to reduce eddy current loss, so that the radiation efficiency of the bulk acoustic wave magnetoelectric antenna is improved, and the problems of discontinuous stress and low radiation efficiency of the magnetoelectric antenna caused by the air gap interval magnetostriction layer in the prior art are solved. The insulating dielectric layer is used as the spacer layer, so the soft magnetic characteristic of the magnetostriction layer can be improved, the coercive force of the magnetostriction layer is effectively reduced, and the sensitivity of the radiation region is improved. Through simulation analysis, the eddy current loss can be effectively reduced by more than 65%, and the radiation efficiency of the magnetoelectric antennais greatly improved.

The qualities of yarns are uniformized. For each of cooling cylinders 30, a partition 51 is provided to surround each cooling cylinder 30 and form a circulation space 52 between the partition 51 and the outer circumferential surface of the cooling cylinder 30 to allow cooling wind to circulate in the circulation space 52, and at a border part between a supply space 23 to which the cooling wind is supplied from the outside and the circulation space 52, a flow adjustment plate 53 is provided to circulate the cooling wind from the supply space 23 into the circulation space 52 while adjusting the flow of the cooling wind.

Centrifugal fan including a main plate (110) rotating about an axis of rotation, a shroud (120) having an inlet port (121) for introduction of air, and a plurality of blades (130) circumferentially arranged between the main plate and the shroud so as to form a flow of air by accelerating air introduced through the inlet port, each having a pressure surface (131) formed such that a portion thereof (RC) near to the shroud is convex in a direction away from the axis of rotation and a portion thereof (CRC) near to the main plate is concave toward the axis of rotation, wherein the shroud has an inside surface formed as a curved surface, the curved surface has a diffusion section (DS) extending radially, the main plate has a curved surface (113) extending radially, and a curved surface of the shroud in the diffusion section at least partially overlaps with the curved surface formed in the main plate when viewed in a direction of the axis of rotation.

The invention provides an air supply structure and an air conditioning unit. The air supply structure comprises an air supply shell, a first flow guide plate assembly and a second flow guide plate assembly. An air inlet is formed in the air supply shell in the vertical direction, and a first air outlet and a second air outlet are formed in the two opposite sides of the air supply shell in the horizontal direction correspondingly. The first flow guide plate assembly is arranged at the position, opposite to the air inlet and away from the air inlet, in the air supply shell. The second flow guideplate assembly is arranged at the position opposite to the air inlet and close to the air inlet, in the air supply shell. According to the technical scheme, the second flow guide plate assembly and the first flow guide plate assembly are matched, air inlet of the air inlet can be divided, airflow is divided into two layers, laminar flow is strengthened, vortexes are restrained, dynamic pressure is converted into static pressure, uniform air supply of the first air outlet and the second air outlet is achieved, flow resistance losses are reduced, and noise is lowered.

The invention discloses a slag blocking ball for a converter. The slag blocking ball comprises a ball matrix (1) and a handle (3), wherein the handle is connected with the ball matrix; the surface of the ball matrix (1) is coated with a gas generating layer (2), which is 10cm to 20cm thick, in an enwrapping manner. According to the slag blocking ball for the converter, by adopting a method of coating the surface of the ball matrix of the slag blocking ball with a circle of substance which can generate gas at a high temperature, the effects of decreasing the occurrence rate of the stranding phenomenon of the slag blocking ball and suppressing the phenomenon that slag is entrapped by a tapping vortex are achieved.

A valve body or a throttle valve is disclosed that is capable of changing the amount of intake air into an engine according to a gradient angle of a valve body rotatably supported in an intake air passage. The valve body includes at least one first end surface and at least one second end surface formed on an outer circumferential surface thereof. Air eddies occurring from air flow contact with the first and second end surfaces are shifted to each other.

In a rotating electric machine that includes an armature with an armature coil, the armature coil is formed by winding an electrical conductor wire. The electrical conductor wire includes a plurality of element wires in a bundled state and an insulating coat covering the bundled element wires. Each of the element wires includes an electrical conductor through which electric current flows, and a fusing layer that covers a surface of the electrical conductor. In the bundled state of the element wires, the fusing layers of the element wires are in contact with and fused to one another. Between adjacent parts of the electrical conductor wire wound to form the armature coil, there are formed gaps due to differences in straightness between different parts of the electrical conductor wire. The gaps are filled with a filler.

The invention discloses an outdoor unit of an air conditioner, which has an axial flow fan and a bell mouth. The axial fan is configured by arranging blades at predetermined intervals along the outer circumference of a hub, each of which is formed such that a contour line of a rear edge portion thereof with respect to a rotation direction is recessed toward a front edge thereof. The bell mouth is arranged on the blowing side of the axial flow fan. An axial blower is provided in the outdoor unit. The bell mouth and the axial fan are arranged in the axial blower such that the ratio X/L is in the range of 0.2 to 0.8, where X is the point on the contour line of the trailing edge of the blade. The distance between the most inwardly recessed part in the direction of rotation and the air outflow surface of the bell mouth, L is the axial length of the bell mouth.