Patent application number | Description | Published |
20100320878 | Electrical Rotating Machine - A direction in which cooling air generated by a cooling fan flows to be discharged is perpendicular or nearly perpendicular to a direction in which diffusers are inclined. Thus, airflow resistance is increased by the diffusers, and the cooling air cannot be efficiently discharged from discharge ports provided circumferentially in an outer peripheral portion of a housing. Further, a stator coil cannot be sufficiently cooled. An electrical rotating machine includes: a rotor having a cooling fan on an end face of the rotor; a stator that is arranged opposite the rotor and has a stator coil with a rotation clearance provided between the stator and the rotor; a housing that holds the rotor and the stator; a plurality of intake ports that are provided in a side wall portion of the housing; a plurality of discharge ports that are provided circumferentially in an outer peripheral portion of the housing; and a plurality of diffusers that are provided circumferentially on an inner wall surface of a corner portion of the housing, the diffusers inclining toward the side opposite to a rotational direction of the rotor. | 12-23-2010 |
20120274171 | Rotating Electric Machine - An object is to provide a rotating electric machine offering a high output and high efficiency by balancing inductance of each phase even if a stator is used in which stator windings of different phases are disposed in a slot of a stator core in a three-phase winding. A stator | 11-01-2012 |
20120299449 | Automotive Alternator - To provide a high-quality, high-output, and low-cost automotive alternator by suppressing heat generation through the reduction of current loss in a heat dissipating plate of a rectifier without expanding a space for placing the heat dissipating plate and reducing the cooling performance of the heat dissipating plate. An automotive alternator includes a rectifier, wherein the rectifier is configured such that a heat dissipating plate of positive pole to which the rectifier element of positive pole is mounted is disposed opposite to a heat dissipating plate of negative pole to which a plurality of rectifier elements of negative pole are mounted; wherein the heat dissipating plate of positive pole is made up of a first heat dissipating plate and a second heat dissipating plate, which are made of two different materials. | 11-29-2012 |
20120306300 | VEHICLE AC GENERATOR - Vehicle AC generator comprises a stator comprising stator windings; front frame and rear frame, each rotatably supporting a rotor in the stator via a space on an inner circumference thereof; cooling fan fitted to the rotor; first polarity arm configured to rectify a current of one polarity; second polarity arm configured to rectify a current of another polarity; rectifier device configured to rectify an alternating current generated in stator windings; protective cover covering rectifier device. Rectifier device comprises first heat dissipating plate having rectifier elements forming first polarity arm, second heat dissipating plate rectifier elements forming second polarity arm, and connection plate formed in waveform-like shape and disposed between the first and second heat dissipating plates, and passage of a cooling air blown by the cooling fan formed between first heat dissipating plate and connection plate and between second heat dissipating plate and connection plate. | 12-06-2012 |
20130057121 | ELECTRICAL ROTATING MACHINE - An electrical rotating machine which includes: a rotor; a stator provided with an armature winding, the rotor and the stator being housed in a housing space formed by a front bracket and a rear bracket; and a rear cover provided with a circumferential side wall and a bottom wall and disposed near the bottom of the rear bracket. The rear cover includes a plurality of engaging openings formed in the circumferential side wall of the rear cover, and steps of the engaging openings each produced by the difference between the diameter of the side wall on the bottom wall side and the diameter of the side wall on the end opening side. The bracket has engaging portions inserted into the corresponding steps for fixing the rear bracket. | 03-07-2013 |
20140354095 | Rotating Electrical Machine - Provided is a high-output, high-efficiency, and high-quality rotating electrical machine that is excellent in productivity, can prevent interference in coil end portions of stator coils, and has a stator with improved coolability. A stator coil | 12-04-2014 |
20150028704 | Rotating Electrical Machine and Manufacturing Method Therefor - A high-output, high-efficiency and high-quality rotating electrical machine is provided which has a stator shaped to avoid interference between coil end portions even in cases where the coil space factor of stator coils is raised and the stator coils are formed by winding continuous wires, each having a rectangular cross-section, for high productivity. | 01-29-2015 |