CN103501078B - Permanent magnetism with vacuum pump and electromagnetic mixed exciting generator - Google Patents

Abstract

The invention provides a permanent magnet and electromagnetic hybrid excitation generator with a vacuum pump, which belongs to the technical field of automotive electrical appliances, and is composed of a vacuum pump, a hybrid excitation system, a power generation system, a rotor, a front end cover, and a rear end cover. The number and The number of power generation systems is equal and spaced apart from each other and fixed on the same circumference in the inner cavity of the rear end cover by screws. The rotor is a flange structure with a simple structure and small moment of inertia. The excitation magnetic field is jointly provided by permanent magnets and electric excitation windings. By adjusting the size and direction of the electric current of the electric excitation winding, the superimposed magnetic field of the permanent magnetic field and the electric excitation field can be adjusted to ensure that the output voltage of the generator remains stable under variable speed and load conditions. The electrical equipment of the car provides electric energy, and can also provide vacuum boosting energy for the braking system.

Description

Permanent magnet and electromagnetic hybrid excitation generator with vacuum pump

technical field

The invention provides a permanent magnet and electromagnetic hybrid excitation generator with a vacuum pump, which belongs to the technical field of automobile motors and electrical appliances.

Background technique

The automobile industry is a symbol of modern industry and a leading industry in the development of the national economy. It plays an indispensable role in all aspects of industrial and agricultural production, transportation, and human production and life. At present, it provides vacuum booster energy for automobile braking systems. The vacuum pump and generator are installed independently on the vehicle, which not only occupies space but also increases the cost. The generator used generally has poor lighting effect at low speed, and the output power is small, which cannot meet the user's requirements. For example, the invention patent announced in the Chinese Patent Gazette on August 8, 2001: Stabilized Permanent Magnet Generator, application number: 00112053.0, consists of a casing, a machine base, a power shaft, a rotor, a permanent magnet steel, a stator, a stator winding, and a stator seat, stator sliding sleeve, balance spring, anti-rotation connecting screw, sliding block, adjusting shaft, positioning bearing, adjusting shaft driving mechanism and automatic feedback control circuit, etc. The power rotating shaft is fixed on the machine base through the positioning bearing, and the rotor is fixed on the On the power rotating shaft, one end of the stator sliding sleeve is fixed on the base, and the stator sliding sleeve is provided with a through slot along the axial direction. The balance spring is arranged in the stator sliding sleeve, and one end of the spring is blocked by one end surface of the stator sliding sleeve. The other end pushes the sliding block placed in the stator sliding sleeve, and the sliding block is fixedly connected with the stator base by the anti-rotation connecting screw passing through the sliding sleeve slot. The center of the sliding block is connected with one end of the adjusting shaft by thread , the detection signal input terminal of the automatic feedback control circuit is connected to the output terminal of the stator winding, and the control signal output terminal of the circuit is connected to the controlled terminal of the driving mechanism. The stabilized permanent magnet generator has complex structure and high cost, and its performance needs to be further improved.

Contents of the invention

The purpose of the present invention is to provide a permanent vacuum pump with a compact structure, convenient installation, small space occupation, which can overcome the above-mentioned defects, and can not only provide electric energy for the electric equipment of the automobile, but also provide vacuum boosting energy for the braking system. Magnetic and electromagnetic hybrid excitation generator, its technical content is:

A permanent magnet and electromagnetic hybrid excitation generator with a vacuum pump consisting of a vacuum pump, a hybrid excitation system, a power generation system, a rotor, a front end cover, and a rear end cover. The number of systems is equal to the number of power generation systems, and the hybrid excitation system and the power generation system are spaced apart from each other and are fixed on the same circumference in the inner cavity of the rear end cover by screws;

The hybrid excitation system is composed of electric excitation winding, electric excitation winding iron core, permanent magnet, first screw and second screw. The permanent magnet is fixed on one end of the electric excitation winding iron core by the second screw, and the other end of the electric excitation winding iron core It is fixed in the inner cavity of the rear end cover by the first screw, and the electric excitation winding is wound on the outer circle of the electric excitation winding iron core. The winding direction of each electric excitation winding is the same and the number of turns is equal. The end of the iron core of the rear electric excitation winding close to the rear end cover is connected to the DC power supply in a way that produces the same polarity;

The power generation system is composed of armature winding, armature winding iron core, and the third screw. The armature winding iron core is fixed in the inner cavity of the rear end cover through the third screw, and the armature winding is wound on the outer circle of the armature winding iron core. Each armature winding has the same winding direction and the same number of turns. The tail end of the first armature winding is connected to the head end of the second armature winding, and so on. The tail end of the last armature winding is connected to the first end of the first armature winding. The first end of an armature winding is used as the voltage output end of the permanent magnet and electromagnetic hybrid excitation generator with a vacuum pump;

The rotor is composed of rotor disk, shaft and nut. The rotor disk is a flange structure with multiple rotor poles around it. The number of rotor poles is equal to the sum of the number of permanent magnets and the number of armature winding cores. The rotor disk passes through The nut is fixed on the shaft, and there is a certain gap between the rotor disk and the axial direction of the permanent magnet and the armature winding iron core, and can rotate relatively.

Working principle: The magnetic flux passes through the air gap from the N pole of the permanent magnet to one rotor pole and then to the other adjacent rotor pole, and then passes through the air gap, the armature winding core, the rear end cover, the electric excitation winding core to the permanent magnet. The S pole of the magnet forms a closed loop. The engine drives the generator pulley to rotate, and the pulley drives the coaxial generator rotor to rotate. The magnetic flux in the iron core of the armature winding changes continuously, so that the armature winding generates an electromotive force and supplies electricity to the car. The device provides electrical energy.

Compared with the prior art, the present invention has a flange structure with simple structure and small moment of inertia. The excitation magnetic field is jointly provided by the permanent magnet and the electric excitation winding. By adjusting the magnitude and direction of the electric current of the electric excitation winding, the permanent magnet The magnetic field after the superposition of the magnetic field and the electric excitation magnetic field can be adjusted to ensure that the output voltage of the generator remains stable under variable speed and load conditions. Provides vacuum boost energy.

Description of drawings

Fig. 1 is the structural representation of the embodiment of the present invention;

Fig. 2 is the A-A sectional view of the embodiment shown in Fig. 1;

Fig. 3 is a B-B sectional view of the embodiment shown in Fig. 1 .

detailed description

In the figure: 1, electric excitation winding 2, first screw 3, electric excitation winding iron core 4, second screw 5, permanent magnet 6, third screw 7, armature winding iron core 8, armature winding 9, rear end Cover 10, Front Cover 11, Rotor Disk 12, Nut 13, Shaft

The present invention will be further described below in conjunction with accompanying drawing:

A permanent magnet and electromagnetic hybrid excitation generator with a vacuum pump consisting of a vacuum pump, a hybrid excitation system, a power generation system, a rotor, a front end cover 10, and a rear end cover 9, characterized in that the vacuum pump is fixed on the rear end cover 9 of the generator by bolts , the number of the hybrid excitation system is equal to the number of the power generation system, the hybrid excitation system and the power generation system are spaced from each other and are fixed on the same circumference in the inner cavity of the rear end cover 9 by screws;

The hybrid excitation system is composed of an electric excitation winding 1, an electric excitation winding core 3, a permanent magnet 5, a first screw 2, and a second screw 4, and the permanent magnet 5 is fixed on one end of the electric excitation winding iron core 3 through the second screw 4, The other end of the electric excitation winding iron core 3 is fixed in the inner cavity of the rear end cover 9 by the first screw 2, the electric excitation winding 1 is wound on the outer circle of the electric excitation winding iron core 3, and each electric excitation winding 1 is wound The direction is the same, the number of turns is equal, and the electric excitation winding 1 is connected to the DC power supply in such a way that the end of the electric excitation winding iron core 3 close to the rear end cover 9 generates the same polarity after the direct current is connected;

The power generation system is composed of an armature winding 8, an armature winding core 7, and a third screw 6. The armature winding core 7 is fixed in the inner cavity of the rear end cover 9 through the third screw 6, and the armature winding 8 is wound on the electric On the outer circle of the armature winding core 7, each armature winding 8 has the same winding direction and the same number of turns, the tail end of the first armature winding 8 is connected to the head end of the second armature winding 8, and so on, The tail end of the last armature winding 8 and the head end of the first armature winding 8 are used as the voltage output end of the permanent magnet and electromagnetic hybrid excitation generator with a vacuum pump;

The rotor is composed of a rotor disc 11, a shaft 13, and a nut 12. The rotor disc 11 is a flange structure with a plurality of rotor poles around it. The number of rotor poles is equal to the number of permanent magnets 5 and the number of armature winding cores 7. In sum, the rotor disk 11 is fixed on the shaft 13 through the nut 12, and there is a certain gap between the rotor disk 11 and the axial direction of the permanent magnet 5 and the armature winding iron core 7, and can rotate relatively.

Claims (1)

1. a permanent magnetism with vacuum pump and electromagnetic mixed exciting generator, be made up of vacuum pump, composite excitation system, electricity generation system, rotor, front end housing (10), rear end cap (9), it is characterized in that: vacuum pump is bolted on commutator end bearing support bracket (9), the quantity of composite excitation system is equal with the quantity of electricity generation system, composite excitation system and electricity generation system is spaced and to be all fixed by screws in rear end cap (9) inner chamber circumferentially same;

Composite excitation system is by electric excitation winding (1), electricity excitation winding iron core (3), permanent magnet (5), first screw (2), second screw (4) forms, permanent magnet (5) is fixed on one end of electric excitation winding iron core (3) by the second screw (4), the other end of electricity excitation winding iron core (3) is fixed in the inner chamber of rear end cap (9) by the first screw (2), electricity excitation winding (1) is wrapped on the cylindrical of electric excitation winding iron core (3), each electric excitation winding (1) direction of winding is consistent, equal turn numbers, the mode that electricity excitation winding (1) produces identical polar by electric excitation winding iron core (3) after passing into direct current near one end of rear end cap (9) connects DC power supply,

Electricity generation system is by armature winding (8), armature winding iron core (7), 3rd screw (6) composition, armature winding iron core (7) is fixed in the inner chamber of rear end cap (9) by the 3rd screw (6), armature winding (8) is wrapped on the cylindrical of armature winding iron core (7), each armature winding (8) direction of winding is consistent, equal turn numbers, the tail end of first armature winding (8) connects the head end of second armature winding (8), the like, the tail end of last armature winding (8) and the head end of first armature winding (8) are as the band permanent magnetism of vacuum pump and the voltage output end of electromagnetic mixed exciting generator,

Rotor is made up of rotor disk (11), axle (13), nut (12), rotor disk (11) is flange plate type structure, periphery is provided with multiple rotor pole, the quantity of rotor pole equals the quantity of permanent magnet (5) and the quantity sum of armature winding iron core (7), rotor disk (11) is fixed on axle (13) by nut (12), there is certain interval between the axial direction of rotor disk (11) and permanent magnet (5), armature winding iron core (7), can relatively rotate.