6results about How to "Increase flux" patented technology

The invention discloses an LTCC (Low Temperature Co-Fired Ceramic) planar transformer and a preparation method thereof, the transformer comprises an upper margin, a lower margin and a plurality of middle substrates, the upper margin, the lower margin and the plurality of middle substrates are formed by ferrite raw tapes, annular areas are arranged on the plurality of middle substrates, PET (Polyethylene Terephthalate) films at the bottoms of the raw tapes are reserved in the annular areas, and printing paste is used for filling in the annular areas. Silver paste is printed through a screen plate to form an internal winding, and a via hole is formed in the annular area of each middle substrate corresponding to the winding. After the transformer is prepared according to the above steps, each layer of the transformer is preliminarily fused through warm water isostatic pressing, glue discharging sintering is carried out through a sectional type sintering furnace, silver bonding is carried out on a leading-out terminal electrode through a special silver bonding jig after sintering, and the terminal electrode is formed through electroplating after silver sintering. According to the invention, the problems of cracking, voids and warping easily occurring in the sintering process are solved, and meanwhile, the coupling coefficient of the product is increased from 90% to 95% or above.

The invention relates to the technical field of motors, and provides a planar motor with an iron core structure, the planar motor comprises a stator component, a rotor component and an air floatation component, the stator component comprises a permanent magnet array and a fixed plate, the fixed plate is arranged on one side of the permanent magnet array, and an air floatation surface is formed on the surface of one side, far away from the permanent magnet array, of the fixed plate; the mover part can be movably arranged on one side of the fixing plate along the air floating surface, the mover part comprises a coil and an iron core, and the coil is arranged outside the iron core in a sleeving mode; the air floatation component and the rotor component are relatively fixed, and the air floatation component carries out air floatation supporting on the rotor component. Through the arrangement, the iron core provides a magnetic conduction path, the magnetic flux of the permanent magnets and the coil is increased, the electromagnetic coupling strength is enhanced, the thrust performance of the planar motor is improved, the number of the permanent magnets is reduced, and the cost is reduced. And the magnetic attraction force exists between the iron core and the permanent magnet array, so that the preloading force can be provided for the air floatation component, the air floatation component is prevented from being configured with an independent preloading component, and the compactness of the planar motor is improved.

This disclosure relates to a rotor, an electric motor, and a compressor. The rotor includes a rotor core, a plurality of rare-earth permanent magnets, and a plurality of ferrite permanent magnets. The rotor core includes a plurality of core units arranged sequentially along the circumference of the rotor core. Each core unit has two first mounting slots and one second mounting slot arranged circumferentially at intervals. The first mounting slots have openings located on the outer circumferential surface of the core unit. The second mounting slots are located between the two first mounting slots and opposite to the side of the first mounting slots away from the opening. The plurality of rare-earth permanent magnets are fixed one-to-one in all the first mounting slots; the plurality of ferrite permanent magnets are fixed one-to-one in all the second mounting slots. This disclosure can improve motor performance by increasing the amount of inexpensive ferrite permanent magnets while reducing the amount of rare-earth materials used, thereby balancing motor performance and cost.

The utility model discloses a rotor assembly, a motor and a household electrical appliance, and relates to the technical field of motors. The rotor assembly comprises the rotor core and the permanent magnet, and the permanent magnet is integrally injection-molded on the rotor core, so that the assembly of the rotor assembly can be simplified, and the production efficiency is improved. The inner side wall of the rotor core is provided with a plurality of grooves which are arranged around the axis of the rotating shaft of the rotor assembly, the outer side wall of the first magnetic part is provided with convex parts which are the same as the grooves in number, and the convex parts are correspondingly arranged in the grooves. Under the condition that the external dimension of the motor is not changed basically, the size of the permanent magnet can be effectively increased, and then the magnetic flux generated by the permanent magnet is increased. And meanwhile, the outer side wall of the first magnetic part is provided with the convex part, so that the area of the outer side wall of the first magnetic part can be effectively increased, the area of magnetic flux emitted by the rotor assembly is larger than the area of one side close to the air gap, a magnetism gathering effect can be formed, the air gap flux density is improved, the torque density is improved, and the performance of the motor is improved.

A neutron capture therapy system is provided, which can prevent the material of a beam shaping assembly from deformation and damaged, and improve the flux and quality of neutron sources. A boron neutron capture therapy system (100) includes a neutron generating device (10) and a beam shaping assembly (20). The neutron generating device (10) includes an accelerator (11) and a target (T). A charged particle beam (P) generated by the acceleration by the accelerator (11) interacts with the target (T) to generate neutrons. The neutrons form a neutron beam (N). The neutron beam (N) defines a main axis (X). The beam shaping assembly (20) includes a support part (21) and a main part (23) filled within the support part (21).

The present invention is provided with: a magnetic gear (60b) having an input shaft magnet (20) for inputting rotational driving force, a magnetic force modulation unit (25) for modulating magnetic flux, a multi-pole magnet (40) having a larger number of poles than the input shaft magnet, and an output shaft (41) that rotates integrally with the magnetic force modulation unit or the multi-pole magnet; and a magnetic loop (MC) in which magnetic flux from the input shaft magnet flows in parallel, the magnetic loop being formed with a torque generation path ([phi] 1) in which the magnetic flux flows from the N pole (20n) of the input shaft magnet to the S pole (20s) of the input shaft magnet via the magnetic modulation unit and the multi-pole magnet to generate torque. And a short-circuit magnetic flux path (phi 2) through which magnetic flux flows from the N pole of the input shaft magnet to the S pole of the input shaft magnet in a short-circuit manner without passing through the magnetic force modulation unit.