KR20000052068A - Cooling fan for alternator - Google Patents

Abstract

PURPOSE: A cooling fan for alternating current generator is provided to raise cooling efficiency by installing the wings of a cooling fan in parallel outside and the center of the fan and supplying air to the outer and inner diameters of the rotor of a generator. CONSTITUTION: A cooling fan for alternating current generator includes a brush assembly(2), a stator assembly(3), a rotor assembly(4), a bearing(5), a pulley(6). Multiple wings are bending molded outside the cooling fan(7). The cooling fan(7) is installed to the rotor assembly(4). Multiple inner wings(9) formed on the center of the cooling fan(7) are bending molded to supply air to the inside of the rotor of the motor.

Description

Cooling fan for alternator {Cooling fan for alternator}

According to the present invention, in the vehicle alternator, the blades of the fan for cooling the inside of the generator are provided on the outer circumferential side and the center side of the fan so that the air by the fan can be supplied to both the outer diameter side and the inner diameter side of the generator. The present invention relates to an AC generator cooling fan capable of improving the cooling efficiency of the fan.

In general, the vehicle is equipped with a variety of electrical and electronic devices and they are to be operated by the power supplied from the generator and the storage battery, and is provided with a charging device centered on the generator for the stable supply of the power, the generator is a direct current Although alternators and alternators are used, alternators that maintain stability at low and high speeds are more widely used, and as shown in FIG. 1, the brush assembly 2, the stator assembly 3, The rotor assembly 4, the bearing 5 and the pulley 6 are provided, and the rotor assembly 4 is provided with the cooling fan 7 installed.

On the other hand, the conventional cooling fan (Fan) in the generator configured as described above is formed by bending a plurality of blade pieces (8) in a vertical state to the flat fan (7) as shown in Figure 2 and this blade piece 8 is the fan It was comprised so that it may be formed only in the outer peripheral side of (7).

However, in the conventional art as described above, in forming the cooling fan, since the blade pieces 8 of the cooling fan are formed only on the outer circumferential side, the cooling wind by the blade pieces is supplied only in the outer diameter direction of the rotating body installed inside the generator. As a result, the outer diameter side of the rotating body is smoothly cooled, but the bearing part, which is the center of the rotating body, does not properly reach the air, and thus there is a closed end that the cooling efficiency of the actual generator is lowered.

In addition, when the air generated by the cooling fan is circulated through the outer diameter portion of the rotating body to the center side in which the bearings and the like are installed, the cooling air is rather heated on the center side, so the cooling effect is very small. There are problems such as weakening of durability of parts and the like and deterioration of characteristics of the generator.

The present invention has been made in view of the above-mentioned conventional drawbacks and solves the above-mentioned problems. In the vehicular alternator, the blades of the fan for cooling the inside of the generator are arranged on the outer peripheral side and the central side of the fan. It is to provide a cooling fan for the alternator to improve the cooling efficiency by the fan by supplying air to both the outer diameter side and the inner diameter side of the rotor of the generator, which is carried out with the accompanying drawings below The detailed description will be given as follows.

1 is a cross-sectional view showing the structure of a typical alternator

Figure 2 is a plan view showing a conventional cooling fan structure installed in the generator of Figure 1

3 is a plan view showing the structure of the present invention cooling fan

Figure 4 is a perspective view showing the main portion of the cooling fan of the present invention

5 is an exploded perspective view showing another embodiment of FIG.

Explanation of symbols on the main parts of the drawing

1: housing

2: brush assembly

3: stator assembly

4: rotor assembly

5: bearing

6: pulley

7: cooling fan

8: wings

9: inner wing

A brush assembly (2), a stator assembly (3), a rotor assembly (4) and a bearing (5) and a pulley (6) are installed in the housing (1), and the rotor assembly (4) has several blade pieces (8). In the configuration formed by installing the cooling fan 7 bent on the outer circumferential side, a plurality of inner circumferential blade 9 is formed in the central portion of the cooling fan 7 provided with the blade piece 8 on the outer circumferential side, The inner blade 9 is bent and formed to supply air to the inside of the rotor of the generator.

The inner peripheral blade 9 may be formed in a T-shape inside the cooling fan 7 as shown in FIG. 5.

The present invention configured as described above is installed in the brush assembly 2, the stator assembly 3, the rotor assembly 4 and the bearing (5) and the pulley (6) inside the housing (1) and the rotor assembly (4) ) Is formed by installing a plurality of blades (8) for the cooling fan (7) bent on the outer peripheral side, a plurality of inner portion in the central portion of the cooling fan (7) provided with the blade (8) on the outer peripheral side A main blade piece 9 is formed, and the inner blade pieces 9 are bent to supply air to the inside of the rotor of the generator, and each blade piece 8 and 9 on the inner and outer circumferential sides of the cooling fan 7 are formed. ) To be installed in parallel with the rotor assembly 4, and when the generator is driven in the state in which the cooling fan 7 is installed, the rotor assembly 4 is rotated together with the rotation of the rotor assembly 4. The cooling fan 7 is rotated and the outside of the cooling fan 7 is rotated. A plurality of blade pieces 8 formed on the side to supply the air to be sucked and discharged to the outer diameter side of the rotor of the generator, the inner blade 9 is supplied to the inside of the rotor by the air coils and bearings installed in the rotor pole Cooling of both the outer circumferential side and the center of the generator by the blade pieces (8) (9) is to be made to cool.

The present invention as described above is installed in the cooling fan and the outer blade side (8) and the inner blade side (9) of the inner circumference as they rotate so that the cooling air is evenly supplied to the inner and outer circumference of the generator as a whole It is possible to smooth the cooling, it is possible to maximize the amount of cooling wind supply by the blade pieces, so that the cooling efficiency of the generator can be greatly increased.

Claims (2)

A brush assembly (2), a stator assembly (3), a rotor assembly (4) and a bearing (5) and a pulley (6) are installed in the housing (1), and the rotor assembly (4) has several blade pieces (8). In the configuration formed by installing the cooling fan 7 bent on the outer circumferential side, a plurality of inner circumferential blade 9 is formed in the central portion of the cooling fan 7 provided with the blade piece 8 on the outer circumferential side, The inner peripheral blade (9) is a cooling fan for the alternator, characterized in that configured to be bent to supply air to the inside of the rotor of the generator. The cooling fan for an alternator according to claim 1, wherein the inner blade pieces (9) are formed in a T-shape inside the cooling fan (7).