CN105915002A - Tangential and radial resultant magnetic field permanent magnet generator with vacuum pump - Google Patents

Abstract

The invention provides a tangential and radial resultant magnetic field permanent magnet generator with a vacuum pump, belonging to the automobile motor electric appliance technical field, and comprises a vacuum pump, a front end cover, a rear end cover, a rotor and a stator; a rectangular permanent magnet steel is embedded in a rectangular notch, and a tile permanent magnet steel is embedded in a circular arc notch; the magnetic field of each magnetic pole of the generator rotor is jointly provided by three permanent magnet steels, and has high magnetic field intensity and power intensity; electro-magnetic coils are not needed, electric energy consumption is less, carbon brushes and mechanical commutators are not provided, and a failure rate is low; the generator has the characteristics of high efficiency and power intensity, compact structure and reliable operation, and can provide electric energy for automobile electric equipment and also provide vacuum power-assisted energy for a brake system.

Description

Tangential and Radial Synthetic Field Permanent Magnet Generator with Vacuum Pump

technical field

The invention provides a tangential and radial synthetic magnetic field permanent magnet generator with a vacuum pump, which belongs to the technical field of automobile electric 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 object of the present invention is to provide a switch with a vacuum pump that can overcome the above-mentioned defects, has a compact structure, is convenient to install, and occupies a small space. Direct and radial synthetic magnetic field permanent magnet generator, its technical content is:

The tangential and radial synthetic magnetic field permanent magnet generator with vacuum pump is composed of vacuum pump, front end cover, rear end cover, rotor and stator. Direct and radial synthetic magnetic field permanent magnet rotor;

The tangential and radial synthetic magnetic field permanent magnet rotor is composed of shaft, rectangular permanent magnet steel, tile permanent magnet steel, rotor core, and fan-shaped annular magnetic isolation air gap. There is no connection between the outer end of the radial rectangular slot and the outer circle of the rotor core, and an inner arc surface that runs through the thickness of the rotor core is set between the outer ends of two adjacent radial rectangular slots. The arc-shaped slot facing the outer circle of the rotor core, the arc-shaped slot is not connected to the radial rectangular slot, and the two ends of the arc-shaped slot are not connected to the outer circle of the rotor core. The inner end of the slot is provided with a fan-shaped annular magnetic isolation air gap that runs through the thickness of the rotor core. The outer end of the fan-shaped annular magnetic isolation air gap is connected to the inner end of the radial rectangular slot, and the adjacent fan-shaped annular magnetic isolation air gap is not connected. Install the rectangular permanent magnet steel in the radial rectangular groove in such a way that the N poles of the two adjacent rectangular permanent magnet steels are opposite to the N poles, and the S poles are opposite to the S poles. The polarity of the inner arc surface of the permanent magnet steel is the same as the polarity formed by two adjacent pieces of rectangular permanent magnet steel, which are successively installed in the arc-shaped groove, and the rotor core is pressed on the shaft.

Working principle: The automobile engine drives the pulley of the permanent magnet generator to rotate, that is, the rotor magnetic field rotates, and the armature winding cuts the magnetic field lines to generate electromotive force, which provides electric energy for automobile electrical equipment.

Compared with the prior art, the present invention has the rectangular permanent magnet steel embedded in the radial rectangular groove, the tile permanent magnet steel embedded in the arc-shaped groove, and the magnetic field of each magnetic pole of the generator rotor is composed of three pieces of permanent magnet steel. Provided together, the magnetic field strength is large, the power density is high, and no electric excitation winding is required, the power consumption is small, there is no carbon brush and mechanical commutator, the failure rate is low, and it has the characteristics of high efficiency, high power density, compact structure, and reliable operation. 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 of drawings

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

Fig. 2 is a sectional view of the rotor of the embodiment shown in Fig. 1 .

In the figure: 1. Rear end cover 2. Shaft 3. Rotor core 4. Stator 5. Tiles permanent magnet steel 6. Front end cover 7. Rectangular permanent magnet steel 8. Sector ring magnetic isolation air gap.

detailed description

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

The tangential and radial synthetic magnetic field permanent magnet generator with a vacuum pump is composed of a vacuum pump, a front end cover 6, a rear end cover 1, a rotor, and a stator 4. It is characterized in that the vacuum pump is fixed on the generator rear end cover 1 by bolts to generate The machine rotor is a permanent magnet rotor with a combined tangential and radial magnetic field;

The tangential and radial synthetic magnetic field permanent magnet rotor is composed of shaft 2, rectangular permanent magnet steel 7, tile permanent magnet steel 5, rotor core 3, fan-shaped annular magnetic isolation air gap 8, and rotor core 3 is evenly distributed with even numbers A radial rectangular slot that runs through the thickness of the rotor core 3, the outer end of the radial rectangular slot is not connected to the outer circle of the rotor core 3, and there is a through rotor between the outer ends of two adjacent radial rectangular slots. The inner arc surface of the thickness of the iron core 3 is facing the arc groove of the outer circle of the rotor iron core 3, the arc groove is not connected to the radial rectangular groove, and the two ends of the arc groove are connected to the outer circle of the rotor iron core 3. There is no connection between them, and the inner end of each radial rectangular slot is provided with a fan-shaped annular magnetic isolation air gap 8 that runs through the thickness of the rotor core 3, and the outer end of the fan annular magnetic isolation air gap 8 is connected to the inner end of the radial rectangular slot. Connected, the adjacent fan-shaped annular magnetic isolation air gaps 8 are not connected, and the rectangular permanent magnets 7 are installed in sequence in such a way that the N poles of the two adjacent rectangular permanent magnets 7 are opposite to the N poles, and the S poles are opposite to the S poles. In the radial rectangular groove, the tile permanent magnet steel 5 is installed sequentially in the same manner as the polarity of the inner arc surface of the tile permanent magnet steel 5 and the polarity formed by two adjacent rectangular permanent magnet steel 7. In the arc-shaped groove, the rotor core 3 is press-fitted on the shaft 2 .

Claims (1)

1. a tangential and radially resultant magnetic field magneto for band vacuum pump, by vacuum pump, drive end bearing bracket (6), rear end cap (1), rotor, stator (4) composition, it is characterised in that: vacuum pump is bolted on commutator end bearing support bracket (1), electromotor Rotor is tangential and radial direction resultant magnetic field p-m rotor；

Tangentially with radially resultant magnetic field p-m rotor by axle (2), rectangle permanent-magnet steel (7), tile permanent-magnet steel (5), rotor core (3), fan annular every magnetic air gap (8) form, rotor core (3) is evenly equipped with even number and runs through the radial direction of rotor core (3) thickness Rectangular channel, does not radially connect between the outer end of rectangular channel and the cylindrical of rotor core (3), outside adjacent two radial direction rectangular channels It is provided with the inner arc surface running through rotor core (3) the thickness arc-shaped slot towards rotor core (3) cylindrical, arc-shaped slot in the middle of end Do not connect with radial direction rectangular channel, do not connect between the two ends of arc-shaped slot and the cylindrical of rotor core (3), at each radial direction square The inner of shape groove is provided with runs through the fan annular of rotor core (3) thickness every magnetic air gap (8), and fan annular is every the outer end of magnetic air gap (8) Inner with radial direction rectangular channel connects, and adjacent fan annular does not connects every magnetic air gap (8), by rectangle permanent-magnet steel (7) according to adjacent Two panels rectangle permanent-magnet steel (7) N pole and N extremely relative to, S pole and S extremely relative to mode be sequentially arranged at radially in rectangular channel, then The pole that tile permanent-magnet steel (5) is formed with adjacent two panels rectangle permanent-magnet steel (7) by the polarity of tile permanent-magnet steel (5) inner arc surface The mode that property is identical is sequentially arranged in arc-shaped slot, and rotor core (3) is fitted on axle (2).