CN103532268B - Permanent magnet generator with vacuum pump - Google Patents

Abstract

The invention provides a permanent magnet generator with a vacuum pump, which belongs to the technical field of automobile motors and electrical appliances, and is composed of a vacuum pump, a power generation system, a permanent magnet, a rotor, a front end cover, and a rear end cover. The number of the power generation system is equal to the number of permanent magnets and The mutual intervals are fixed on the same circumference in the inner cavity of the rear end cover by screws. The rotor is a flange structure, which has neither electric excitation winding nor permanent magnet. The structure is simple and the moment of inertia is small. The vacuum pump is fixed behind the generator by bolts. On the end cover, the structure is compact and easy to install. It can not only provide electric energy for the electrical equipment of the car, but also provide vacuum boosting energy for the braking system.

Description

Permanent magnet generator with vacuum pump

technical field

The invention provides a permanent magnet 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. Currently, it provides vacuum booster energy for automobile braking systems. The vacuum pump and the 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 January 10, 2007: hybrid excitation voltage stabilizer generator, application number: 200510044103.9, consists of a rotor, a stator, a front end cover, a rear end cover, and an electronic controller, and a permanent magnet is installed on the rotating shaft The rotor and the electric excitation rotor, the permanent magnet rotor and the electric excitation rotor share the same armature winding, and the generated magnetic flux is combined in the magnetic circuit; the permanent magnet rotor is a tangential structure, which consists of a pole shoe rotor core, a magnetic isolation bush , non-magnetic slot wedges and permanent magnetic materials, the permanent magnetic materials are sequentially arranged in the slots of the pole shoe rotor core in the tangential direction and the same polarity faces of adjacent permanent magnetic materials are facing each other, and the non-magnetic conductive The slot wedge is fixed, the pole shoe rotor core is fixed on the magnetic isolation bushing, and the magnetic isolation bushing is pressed on the shaft; the electric excitation rotor is a salient pole structure, which is composed of a salient pole rotor core and an electric excitation winding. The number of salient poles of the iron core is equal to the number of poles of the tangential permanent magnet rotor, and they are evenly distributed along the circle, corresponding to each other. The polarity of the electric excitation winding is N pole according to the convex surface of the salient pole after the direct current is connected. , S poles are wound sequentially according to the rule of spacing between poles, and the number of turns on each salient pole should be equal; the electric excitation winding is connected to the electronic controller through carbon brushes and slip rings. The structure of the hybrid excitation voltage stabilized generator is complex, the cost is high, 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. Magneto, its technical content is:

A permanent magnet generator with a vacuum pump consisting of a vacuum pump, a power generation system, a permanent magnet, a rotor, a front end cover, and a rear end cover. The numbers are equal, and the permanent magnets are respectively fixed on the same circumference in the inner cavity of the rear end cover through the first screw and the armature winding iron core through the second screw at intervals;

The power generation system is composed of armature winding, armature winding iron core and second screw. 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 first The tail end of the armature winding is connected to the head end of the second armature winding, and so on, the tail end of the last armature winding and the head end of the first armature winding are used as the voltage output end of the permanent magnet generator with 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 is formed from the N pole of the permanent magnet through the air gap to one rotor pole and then to the adjacent rotor pole, and then through the air gap, armature winding core, rear end cover to the S pole of the permanent magnet. In a closed loop, the engine drives the generator pulley to rotate, and the pulley then drives the coaxial generator rotor to rotate. The magnetic flux in the armature winding iron core changes continuously, causing the armature winding to generate electromotive force and provide electric energy to the automotive electrical equipment.

Compared with the prior art, the present invention has a flange structure for the rotor, neither electric excitation winding nor permanent magnet, simple structure, small moment of inertia, excitation magnetic field provided by permanent magnet, no electric excitation winding, less power consumption, Brushless slip ring structure, low failure rate, the vacuum pump is fixed on the rear end cover of the generator through bolts, the structure is compact, and the installation is convenient. It can not only provide electric energy for the electrical equipment of the car, but also provide vacuum boost for the braking system. energy.

Description of drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is an 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 ways

In the figure: 1. First screw 2. Permanent magnet 3. Second screw 4. Armature winding core 5. Armature winding 6. Rear end cover 7. Front end cover 8. Rotor disc 9. Nut 10. Shaft.

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

The permanent magnet generator with vacuum pump composed of vacuum pump, power generation system, permanent magnet 2, rotor, front end cover 7 and rear end cover 6 is characterized in that the vacuum pump is fixed on the rear end cover 6 of the generator through bolts, and the power generation system The number is equal to the number of permanent magnets 2, and the permanent magnets 2 are respectively fixed on the same circumference in the inner cavity of the rear end cover 6 through the first screw 1 and the armature winding iron core 4 through the second screw 3 at intervals;

The power generation system is composed of an armature winding 5, an armature winding iron core 4, and a second screw 3. The armature winding 5 is wound on the outer circle of the armature winding iron core 4, and each armature winding 5 has the same winding direction. The numbers are equal, the tail end of the first armature winding 5 is connected to the head end of the second armature winding 5, and so on, the tail end of the last armature winding 5 and the head end of the first armature winding 5 are used as belt The voltage output terminal of the permanent magnet generator of the vacuum pump;

The rotor consists of a rotor disc 8, a shaft 10, and a nut 9. The rotor disc 8 is a flange structure with multiple rotor poles around it. The number of rotor poles is equal to the number of permanent magnets 2 and the number of armature winding cores 4. In sum, the rotor disk 8 is fixed on the shaft 10 through the nut 9, and there is a certain gap between the rotor disk 8 and the axial direction of the permanent magnet 2 and the armature winding iron core 4, and can rotate relatively.

Claims (1)

1. the permanent magnet generator with vacuum pump, be made up of vacuum pump, electricity generation system, permanent magnet (2), rotor, front end housing (7), rear end cap (6), it is characterized in that: vacuum pump is bolted on commutator end bearing support bracket (6), the quantity of the quantity of electricity generation system and permanent magnet (2) is equal, and by the second screw (3), spaced to be separately fixed in rear end cap (6) inner chamber circumferentially same by the first screw (1), armature winding iron core (4) for permanent magnet (2);

Electricity generation system is made up of armature winding (5), armature winding iron core (4), the second screw (3), armature winding (5) is wrapped on the cylindrical of armature winding iron core (4), each armature winding (5) direction of winding is consistent, equal turn numbers, the tail end of first armature winding (5) connect second armature winding (5) head end, the like, the tail end of last armature winding (5) and the head end of first armature winding (5) are as the voltage output end of the permanent magnet generator of band vacuum pump;

Rotor is made up of rotor disk (8), axle (10), nut (9), rotor disk (8) is flange plate type structure, periphery is provided with multiple rotor pole, the quantity of rotor pole equals the quantity of permanent magnet (2) and the quantity sum of armature winding iron core (4), rotor disk (8) is fixed on axle (10) by nut (9), there is certain interval between the axial direction of rotor disk (8) and permanent magnet (2), armature winding iron core (4), can relatively rotate.