Vehicular-type generator and forced air cooling blower combination
First Claim
1. Vehicular generator-forced air circulation blower combination havinga three-phase alternator (1) adapted to be driven at widely varying speeds (nE) from a vehicular-type engine to supply a self-contained network (11, 13) with direct current power havinga field winding (5);
- a plurality of armature windings (6, 7,
8) corresponding to the phases of the alternator;
a power rectifier system (12,
14) connected to the respective armature windings and providing direct current output for the self-contained network (11,
13),a blower (2) providing forced air circulation (A);
and comprisingan induction motor (4) mechanically connected to the blower (2) to drive the blower with a drive torque which depends on frequency of the alternating current output from the alternator; and
wherein the motor is a three-phase motor having three motor armature windings, the motor armature windings being subdivided into motor winding portions (16a, 16b;
17a, 17b;
18a, 18b), one of the motor winding portions (16a, 17a, 18a) of the motor armature windings being voltage windings connected in parallel across the armature windings (6, 7,
8) of the alternator, and the other motor armature winding portions (16b, 17b, 18b) of the motor armature winding being current windings, serially connected between the respective armature windings (6, 7,
8) of the alternator and the rectifier system (12,
14).
1 Assignment
0 Petitions
Accused Products
Abstract
To provide for effective cooling of an automotive-type alternator and/or other equipment within an automobile, for example the radiator or other heat exchanger, even under external high-temperature conditions and low engine speed (nE), for example under idling conditions, the alternator phase windings (6, 7, 8) are connected to respective phase windings (16, 17, 18) of a three-phase squirrel-cage motor which is connected to a blower (2), preferably a radial-type fan, directing forced air circulation towards the alternator and/or the vehicle radiator, the alternator then being placed within the airstream of the radiator as well. A temperature and/or speed-responsive switch can be interposed between the alternator and the motor to energize the motor only if the temperature of the alternator and/or the engine, or other component, rises above a predetermined level, or if the alternator speed drops below a predetermined level.
13 Citations
12 Claims
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1. Vehicular generator-forced air circulation blower combination having
a three-phase alternator (1) adapted to be driven at widely varying speeds (nE) from a vehicular-type engine to supply a self-contained network (11, 13) with direct current power having a field winding (5); -
a plurality of armature windings (6, 7,
8) corresponding to the phases of the alternator;a power rectifier system (12,
14) connected to the respective armature windings and providing direct current output for the self-contained network (11,
13),a blower (2) providing forced air circulation (A); and comprising an induction motor (4) mechanically connected to the blower (2) to drive the blower with a drive torque which depends on frequency of the alternating current output from the alternator; and wherein the motor is a three-phase motor having three motor armature windings, the motor armature windings being subdivided into motor winding portions (16a, 16b;
17a, 17b;
18a, 18b), one of the motor winding portions (16a, 17a, 18a) of the motor armature windings being voltage windings connected in parallel across the armature windings (6, 7,
8) of the alternator, and the other motor armature winding portions (16b, 17b, 18b) of the motor armature winding being current windings, serially connected between the respective armature windings (6, 7,
8) of the alternator and the rectifier system (12,
14). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification