CN102394547A

CN102394547A - Brushless permanent magnetic direct current (DC) fan for automobiles

Info

Publication number: CN102394547A
Application number: CN2011101990414A
Authority: CN
Inventors: 钱东高; 陈春荣
Original assignee: WUXI SOUTHEAST VEHICLE TECHNOLOGY Co Ltd
Current assignee: WUXI SOUTHEAST VEHICLE TECHNOLOGY Co Ltd
Priority date: 2011-07-17
Filing date: 2011-07-17
Publication date: 2012-03-28

Abstract

The invention provides a brushless permanent magnetic DC fan for automobiles. The brushless permanent magnetic DC fan is simple and convenient for installation, has compact connection and good control effect, and can ensure a rotor to rotate in a fixed direction with high reliability, thereby greatly improving the work reliability and work efficiency. The brushless permanent magnetic DC fan comprises a blade, a motor and a controller, wherein the controller is mounted on the fixed board of the motor. The brushless permanent magnetic direct current (DC) fan is characterized in that the motor is a brushless permanent magnetic DC motor, and includes a stator, an external rotor and an insulation system; the blade is mounted on the external rotor of the motor; and a notch is designed on the arc-shaped top surface of a T-shaped gear part of the stator according to the magnetic path, so that a rotary magnetic field can be generated around the notch.

Description

Automobile is used the brush-less permanent magnetic dc fan

Technical field

The present invention relates to brush-less permanent magnetic dc fan in the electrical technology, be specially automobile and use the brush-less permanent magnetic dc fan.

Background technology

At present, automobile adopts with blower fan that brush direct current machine, power are arranged is 90W-800W; Have the structure of brushing direct current machine to comprise rotor, the brush mount component of stator, band commutator, brush mount component comprises carbon brush, spring, brush room, vibration damping part, simultaneously for the parts processing that the brush direct current machine is arranged; Be prone to the rosin joint phenomenon, cause being difficult for being examined, wherein the complex structure of commutator and carbon brush; Installing space is big; And have the contact resistance of commutator and carbon brush of brush direct current machine very big, greatly influenced machine operation reliability and life-span, efficient is also lower.

Adopt the brush-less permanent magnetic direct current machine now in the industry, its good reliability is fit to the automobile blower fan and uses, and for simplified structure; Normally adopt the mode of no Hall control, but do not have the motor of Hall control, need to be equipped with controller; And the controller internal circuit is complicated, and contact is many, and reliability also is difficult to guarantee; And the moment that controller control motor rotates, need be equipped with special circuit to the initial rotation direction of rotor, thereby also increase the complexity of controller.

Summary of the invention

To the defective of prior art, the present invention provides a kind of automobile to use the brush-less permanent magnetic dc fan, and its installation is simple and convenient; Connect compactness, have the better controlling effect, can guarantee that rotor rotates according to set direction; Reliability is high, has improved functional reliability and operating efficiency greatly.

Technical scheme of the present invention is such: it comprises fan blade, motor and controller, and said controller is contained on the fixed head of motor, it is characterized in that: said motor is the brush-less permanent magnetic direct current machine; Said motor comprises stator, external rotor and insulation system, and said fan blade is contained on the external rotor of motor, and the circular arc end face of the T shape tooth portion of said stator is jagged by magnetic Circuit Design, makes it form the magnetic field of rotation on every side.

It is further characterized in that: said insulation system comprises stator core, insulation plate, outlet seat, and said insulation plate comprises insulation plate, the plate that insulate down, and said insulation plate passes through the injection mo(u)lding of stator insulation injection mold; Said stator core is clipped on said going up between insulation plate and the following insulation plate; Said outlet seat comprises outlet column, outlet terminal, and the last installed surface of said outlet column connects outlet terminal.

Compared with prior art, advantage of the present invention is following:

(1) said brush-less permanent magnetic direct current machine, a magnetic field that is equivalent to rotate has been set up in design in air-gap field, presses magnetic Circuit Design one breach in the T of said stator shape tooth portion; Make air gap skewness between said stator and the said external rotor; The magnetic field intensity that produces, torsion difference, thus the magnetic field that rotates produced, said external rotor is fixed rotated to the breach direction; Improve the reliability of brush-less permanent magnetic direct current machine work, simplified controller.

(2) adopted the insulation plate in the said insulation system, said insulation plate can be guaranteed electrical safety performance and product quality requirement, and can adapt to around the rule automated production through the injection mo(u)lding of stator insulation injection mold.

(3) said outlet holder structure is compact, and is easy for installation, can be integrated with wiring, and said outlet terminal and external connection line can secure fixation.

Description of drawings

Fig. 1 is that a kind of automobile of the present invention is with the structural representation of brush-less permanent magnetic dc fan with its internal controller combination;

Fig. 2 is stator core partial view of the present invention and breach sketch map;

Fig. 3 is the Z place enlarged drawing among Fig. 2;

Fig. 4 is insulation plate of the present invention and stator core anabolic process sketch map;

Fig. 5 is a stator module sketch map of the present invention.

Embodiment

See shown in Figure 1ly, the present invention includes fan blade 1, motor 2 and controller 3, motor 2 is specially the brush-less permanent magnetic direct current machine, and motor 2 structures include stator 4, external rotor 5 and insulation system, and fan blade 1 is contained on the external rotor 5, and controller 3 is contained on the fixed head 7 of motor 2; Specifically see Fig. 2, shown in Figure 3; The circular arc end face of the T shape tooth portion of stator 4 has breach by magnetic circuit, makes air gap skewness between stator 4 and the external rotor 5, and the magnetic field intensity that produces, torsion are different; Thereby around it, produce the magnetic field of rotation; Make external rotor 5 fixing, improved the reliability of motor 2 work, and simplified controller 3 to the rotation of breach direction.

See Fig. 1, Fig. 4, shown in Figure 5; Insulation system comprises stator core 10, insulation plate, outlet seat 11; The insulation plate comprises the plate 8 that insulate, the plate 9 that insulate down; The insulation plate can be guaranteed electrical safety performance and product quality requirement, and can adapt to around the rule automated production through the injection mo(u)lding of stator insulation injection mold; Stator core 10 be by silicon steel sheet dash processing, folded system forms, and is clipped on insulation plate 8 and down between the insulation plate 9, stator core 10 around embedding polyester enamel insulated round copper wire, has been guaranteed stator 4 electrical safety performances according to Electromagnetic Design, and environmental protection, rate of finished products height; Outlet seat 11 comprises outlet column, outlet terminal 6, and the last installed surface of outlet column connects outlet terminal 6, and outlet seat 11 compact conformations can be integrated with connecting line, and outlet terminal 6 and connecting line can secure fixation; Stator module is installed in special tooling can conveniently carry out manual coiling, semi-automatic coiling, automatic winding by electrical schematic diagram.

Claims

1. automobile is used the brush-less permanent magnetic dc fan, and it comprises fan blade, motor and controller, and said controller is contained on the fixed head of motor, it is characterized in that: said motor is the brush-less permanent magnetic direct current machine; Said motor comprises stator, external rotor and insulation system, and said fan blade is contained on the external rotor of motor, and the circular arc end face of the T shape tooth portion of said stator is jagged by magnetic Circuit Design, makes it form the magnetic field of rotation on every side.

2. use the brush-less permanent magnetic dc fan according to the said automobile of claim 1; It is characterized in that: said insulation system comprises stator core, insulation plate, outlet seat; Said insulation plate comprises insulation plate, the plate that insulate down, and said insulation plate is through the injection mo(u)lding of stator insulation injection mold; Said stator core is clipped on said going up between insulation plate and the following insulation plate.

3. use the brush-less permanent magnetic dc fan according to the said automobile of claim 1, it is characterized in that: said outlet seat comprises outlet column, outlet terminal, and the last installed surface of said outlet column connects outlet terminal.