Daikin Industries, Ltd.

Hisato Sumitomo

Yuji Nakazawa

Akinobu Ishizaki

Tatsuya Tonari

Yusuke Irino

Kiyotaka Nishijima

Kazuo Ida

Masatsugu Takemoto

Takaaki Ono

Hidemi Tanji

Shouhei Yamasuso

Akio Mutou

Takanori Hori

A thrust magnetic bearing includes a coil formed by winding a conductive wire, and a core that houses the coil. The core is provided with a refrigerant inlet and a refrigerant outlet. A refrigerant flow path connecting the refrigerant inlet and the refrigerant outlet is provided between the coil and the core. The refrigerant flow path is formed so that a refrigerant flowing from the refrigerant inlet to the refrigerant outlet mainly flows along the coil in a winding direction of the coil.

Thrust magnetic bearing with cooling structure

A stator includes a cylindrical stator core provided with a plurality of slots, a segment conductor mounted to the stator core, and a resin insulator including a winding barrel portion and an insertion portion that are integrally molded. The segment conductor includes a plurality of leg portions inserted into the slots, and a crossover wire portion that couples two of the leg portions inserted into the slots that differ from each other. The winding barrel portion is disposed between the stator core and the crossover wire portion of the segment conductor. The insertion portion is disposed on an inner side from the segment conductor inside the slots of the stator core.

Stator

A rotor includes a rotor core having a plurality of magnetic poles. At least one magnetic pole includes a first magnetic pole having three or more circumferentially arranged magnet holes, and a plurality of permanent magnets housed corresponding magnet holes. A portion of the rotor core between adjacent magnet holes has a radially extending region. A maximum radial dimension of each magnet hole is greater than a minimum radial dimension of a portion of the rotor core between a magnet hole radially outer surface and a rotor core outer peripheral surface. The first magnetic pole has a smaller amount of harmonic components in a radial flux density distribution on the rotor core outer peripheral surface, compared to a magnetic pole having a plurality of magnet holes arranged at equal circumferential intervals and a plurality of permanent magnets having substantially the same magnetic flux and number.

Rotor, and rotary electric machine

A rotor includes a rotor core. The rotor core has an outer shape including a first arc portion provided so as to intersect a d-axis, a straight line portion provided so as to intersect a q-axis, and a curved portion that connects the first arc portion and the straight line portion. The first arc portion has an arc shape centered on an axial center of the rotor core. The curved portion includes an arc-shaped second arc portion that bulges outward in a radial direction of the rotor core. The radius of curvature of the second arc portion being smaller than a radius of curvature of the first arc portion.

Rotor, motor, and compressor

A stator for a simultaneous concentrated winding motor includes a core having 3&#xd7;m teeth, and 3&#xd7;m windings. The windings include at least a Uwinding and a Uwinding that belong to a U phase, a Vwinding and a Vwinding that belong to a V phase, and a Wwinding and a Wwinding that belong to a W phase. First lead wires of the Uwinding, the Vwinding, and the Wwinding extend, respectively, from the teeth on which the Uwinding, the Vwinding, and the Wwinding are arranged. First lead wires of the Uwinding, the Vwinding, and the Wwinding extend, respectively, from the teeth on which the Uwinding, the Vwinding, and the Wwinding are arranged.

Growing community of inventors

Osaka, Japan

Hisato Sumitomo