Abstract: Provided is a rotary electric machine in which cooling efficiency can be improved. The rotary electric machine includes a first refrigerant passage through which refrigerant passes from the shaft to the rotor core, wherein the rotor core includes a second refrigerant passage through which the refrigerant having passed through the first refrigerant passage passes, wherein the insulator includes: a base portion; a radially inner protruding portion, which is formed on a radially inner side of the base portion, and a radially outer protruding portion, which is formed on a radially outer side of the base portion, wherein the radially inner protruding portion has a first through-hole penetrating therethrough in a radial direction, and wherein the refrigerant having passed through the second refrigerant passage passes through the first through-hole to travel to the stator coil end portion.

Abstract: A coil device 1 including a winding core 11 and flanges 12, 12, wires 31 to 34 wound around the winding core 11 and having one end located at the flanges 12, 12, and terminal electrodes 51 to 56 provided on the flanges 12, 12. The terminal electrodes 51 to 56 includes a wire connecting part 63a, 63b to which the one end of the wires 31 to 34 are connected and a mounting part 65 formed continuously to the wire connecting part 63a, 63b and to be positioned away from an axis of the winding core with respect to the wire connecting parts 63a, 63b along an outer peripheral direction of the flanges 12, 12.

Abstract: A plate heat exchanger causes heat exchange to be performed using a plurality of heat transfer plates stacked. Each of the heat transfer plates includes a plate body, a first-medium inlet, a first-medium outlet, a second-medium inlet, a second-medium outlet, and a projection that provides a passage. At least one of the first-medium inlet and the first-medium outlet is located at one of two corners at one end of the plate body which the projection contacts. At least one of the second-medium inlet and the second-medium outlet is located at one of two corners at the other end of the plate body from which the projection is separated.

Abstract: Provided is a rotary electric machine in which cooling efficiency can be improved. The rotary electric machine includes a first refrigerant passage through which refrigerant passes from the shaft to the rotor core, wherein the rotor core includes a second refrigerant passage through which the refrigerant having passed through the first refrigerant passage passes, wherein the insulator includes: a base portion; a radially inner protruding portion, which is formed on a radially inner side of the base portion, and a radially outer protruding portion, which is formed on a radially outer side of the base portion, wherein the radially inner protruding portion has a first through-hole penetrating therethrough in a radial direction, and wherein the refrigerant having passed through the second refrigerant passage passes through the first through-hole to travel to the stator coil end portion.

Abstract: A cooling apparatus includes: an annular internal liquid coolant flow channel that is mounted to a rotary electric machine main body, and in which an internal liquid coolant circulates around an outer circumference of the rotary electric machine main body, and an external liquid coolant passage portion through which an external liquid coolant passes, the external liquid coolant passage portion is connected to the internal liquid coolant flow channel by a connecting portion that is positioned vertically higher than the rotary electric machine main body, and the electric power converting apparatus includes a heat radiating surface that releases heat that is generated in the electric power converting apparatus, the electric power converting apparatus being mounted to the cooling apparatus such that the heat radiating surface and the internal liquid coolant can exchange heat at a position that is vertically lower than the connecting portion.

Abstract: A manufacturing method for a magnet includes performing pressure molding in which mixed powder of magnetic powder and a lubricant is molded under pressure so as to promote cracking of the magnetic powder and rearrangement of particles to obtain a molding of the magnetic powder. The pressure molding includes high-temperature pressure molding in which the mixed powder is pressurized and decompressed at a high elevated temperature equal to or higher than a melting point of the lubricant and equal to or lower than a decomposition temperature of the magnetic powder, and low-temperature pressure molding in which the mixed powder is pressurized and decompressed at a relatively low temperature lower than the melting point of the lubricant.

Abstract: A manufacturing method for a magnet is provided which includes molding, under pressure, magnetic powder in a form of secondary particles resulting from aggregation of primary particles, to obtain a molding. A ratio of an average particle size of the primary particles to a maximum particle size of the secondary particles is 1:150 to 1:200. The magnet in the invention is manufactured by the manufacturing method for a magnet in the invention. The invention allows manufacture of the molding and the magnet in both of which the magnetic powder is densely compressed. The magnet has a high residual magnetic flux density.

Abstract: A rotor includes a rotor core having magnet holes that open to both sides in an axial direction, and magnets placed in the magnet holes. A method for manufacturing the rotor includes: the placing step of placing a material of the magnets containing at least magnetic particles in the magnet holes; and the forming step of forming compacts by compressing the material of the magnets in the magnet holes in the axial direction of the rotor with punch members by using the rotor core as a part of a forming die.

Abstract: In a method for manufacturing a rotor, each magnetic steel sheet has protrusions on its one surface and has recesses on the other surface at positions corresponding to the protrusions. The plurality of magnetic steel sheets are joined together as the protrusions of each magnetic steel sheet are fitted in the recesses of its adjoining magnetic steel sheet. A shaft member is inserted into a rotor core in the same direction as that in which the protrusions protrude.

Abstract: A manufacturing method for a magnet includes: a step of obtaining mixed powder of magnetic powder and a lubricant; a step of mixing the mixed powder with an uncured binder that is a silicone composition to attach the binder to a surface of the mixed powder; a step of molding the mixed powder under pressure to obtain a molding, and a step of curing the silicone composition to bind particles of the magnetic powder together,

Abstract: A manufacturing method for a magnet has step of molding magnetic powder under pressure to obtain a molding. The magnetic powder is pressurized using a mold to which a release agent is applied. The release agent is chemical synthesis oil to which an extreme pressure additive is added.

Abstract: A magnet manufacturing method has a step of preparing mixed powder of magnetic powder of a hard magnetic material, which includes one or more of an Fe—N-based compound and an R—Fe—N-based compound and a lubricant that allows formation of an adsorption film on a surface of the magnetic powder, a step of heating the mixed powder at a temperature that is equal to or higher than a melting point of the lubricant and that is lower than a decomposition temperature of the magnetic powder to form the adsorption film of the lubricant on the surface of the magnetic powder, a step of pressurizing and molding the magnetic powder in order to obtain a primary molding, and a step of heating the primary molding at a temperature that is lower than the decomposition temperature of the magnetic powder.

Abstract: A magnet manufacturing method has a step of preparing magnetic powder of a hard magnetic material, which includes one or more of an Fe-N-based compound and an R-Fe-N-based compound, a step of pressurizing and molding the magnetic powder at a pressure equal to or higher than a fracture pressure at which the particles of the magnetic powder are destroyed, to obtain a primary molding, and a step of heating the primary molding at a temperature lower than a decomposition temperature of the magnetic powder. The magnetic powder has at least two peaks in a particle size distribution.

Abstract: A magnet manufacturing method has preparing magnetic powder of a hard magnetic material, which includes one or more of an Fe-N-based compound and an R-Fe-N-based compound, pressurizing and molding the magnetic powder at a pressure equal to or higher than a fracture pressure at which particles of the magnetic powder are destroyed in order to obtain a primary molding, and heating the primary molding at a temperature lower than a decomposition temperature of the magnetic powder. A particle size distribution measured for the magnetic powder indicates that, for the magnetic powder, a ratio of a particle size with a cumulative frequency of 50% to a particle size with a cumulative frequency of 3% is less than eight.