CN101728910A - 12-pole outer rotor capacitor running asynchronous motor - Google Patents

Abstract

The invention is a 12-pole outer rotor capacitor-operated asynchronous motor. Including the motor stator installed on the motor shaft and the motor rotor set on the outside of the motor stator, the number of stator slots of the motor stator is 24, including 12 slots for the main winding and 12 slots for the auxiliary winding, and 12 slots for the auxiliary winding. The ratio of the number of stator slots to the number of rotor slots of the motor rotor is 0.3-0.7. The ratio of the stator outer diameter D1 of the motor stator to the rotor outer diameter D2 of the motor rotor is 0.68-0.95. The invention has the characteristics of small motor vibration, low noise, and fast speed; in addition, in order to make full use of the core punching area, the invention designs the groove type as a double-row groove structure, which increases the groove area and tooth area, effectively The use efficiency of the iron core is greatly improved. In addition, the groove shape adopts arc transition, and the width of the stator, rotor teeth and yoke is uniformly designed, and the magnetic flux density distribution of the stator, rotor teeth and yoke is reasonable and relatively balanced, which is conducive to reducing The iron loss of the punching sheet reduces the heating of the motor, the temperature rise of the winding, the magnetic density and the noise of the motor.

Description

A 12-pole Outer Rotor Capacitor Run Asynchronous Motor

technical field

The invention relates to a 12-pole outer-rotor capacitor-operated asynchronous motor, in particular to a 12-pole outer-rotor capacitor-operated asynchronous motor for fans, and belongs to the transformation technology of the 12-pole outer-rotor capacitor-operated asynchronous motor.

Background technique

At present, there are 12 poles, 14 poles and 16 poles for rotor capacitor running asynchronous motors at home and abroad. Among them, the 14-pole electromagnetic speed is 428.5rpm, the 16-pole electromagnetic speed is 375rpm, and the 12-pole electromagnetic speed is 500rpm. The electromagnetic speed of the 12-pole motor is the highest, and it has the characteristics of high wind speed when applied to ceiling fans. In addition, the 1200mm ceiling fan and the 1400mm ceiling fan use the existing domestic 14-pole or 16-pole motor compared with the 12-pole motor. When the national fan energy efficiency standard is met, the cost of using the 12-pole motor is lower. The cost is high, therefore, the 12-pole motor will be used more and more widely as a low-cost, high-speed motor. But the vibration and noise of the existing 12-pole motor are also relatively large, and it has not been applied to 48-inch and 46-inch ceiling fans.

Contents of the invention

The purpose of the present invention is to consider the above problems and provide a 12-pole outer rotor capacitor asynchronous operation with small motor vibration and low noise, which can increase the speed, reduce costs, and avoid dead spots and concave points on the motor torque speed characteristics. motor. The invention not only has low cost, but also satisfies the requirements of domestic and foreign customers for high wind speed of ceiling fan products.

The technical solution of the present invention is: comprising a motor stator installed on the motor shaft and a motor rotor set outside the motor stator, the number of stator slots of the motor stator is 24, wherein the number of main winding slots and the number of auxiliary winding slots 12 each, the ratio of the number of stator slots of the motor stator to the number of rotor slots of the motor rotor is 0.3-0.7.

The ratio of the stator outer diameter D1 of the motor stator to the rotor outer diameter D2 of the motor rotor is 0.68-0.95.

The ratio of the tooth width dimension T1 of the outer teeth of the stator to the tooth width dimension d1 of the inner teeth of the stator of the above motor stator is 0.8-1.7.

The ratio of the rotor tooth width T2 of the motor rotor to the yoke height d2 is 0.3-0.9.

The slot type of the stator slot of the above-mentioned motor stator adopts a double-row slot structure.

In the double-row slots of the above-mentioned motor stator, with reference to the outer circle of the stator, the shallow slot embedded winding is the main winding, and the deep slot embedded winding is the secondary winding.

The double-row slots of the stator slots of the above-mentioned motor stator are all pear-shaped slots; the slots of the above-mentioned rotor slots are flat slots.

Stator punching teeth are arranged between adjacent slots of the stator slots of the motor stator.

Rotor punching teeth are arranged between adjacent slots of the rotor slots of the motor rotor.

The above-mentioned stator punching teeth and rotor punching teeth are all parallel teeth.

The present invention reduces the number of poles of the motor stator to 12 poles, and makes the ratio of the number of stator slots of the motor stator to the number of rotor slots of the motor rotor be 0.3 to 0.7, so the present invention can avoid motor torque and speed characteristics. The dead point and concave point of the motor reduce the vibration and noise of the motor; in addition, in order to make full use of the iron core punching area, the present invention designs the groove type as a double-row groove structure, which increases the groove area and tooth area, effectively The use efficiency of the iron core is improved. In addition, the groove shape adopts arc transition, and the width of the stator, rotor teeth and yoke is uniformly designed, and the magnetic flux density distribution of the stator, rotor teeth and yoke is reasonable and relatively balanced, which is conducive to reducing impact. The iron loss of the chip can reduce the heating of the motor, reduce the temperature rise of the winding, reduce the magnetic density and the noise of the motor. The invention is a convenient and practical 12-pole outer rotor capacitor-operated asynchronous motor with ingenious design and excellent performance.

Description of drawings

Fig. 1 is the structural representation of motor stator among the present invention;

Fig. 2 is a structural schematic diagram of the motor rotor in the present invention.

In the figure: D1 indicates the outer diameter of the motor stator, D2 indicates the outer diameter of the motor rotor, T1 indicates the tooth width of the outer tooth of the stator, d1 indicates the tooth width of the inner tooth of the stator, T2 indicates the tooth width of the motor rotor, and d2 indicates the height of the yoke of the motor rotor.

Detailed ways

Example:

The structure diagram of the present invention is as shown in Figure 1, 2, comprises the motor stator 1 that is installed on the motor shaft and the motor rotor 2 that is sleeved on the outside of the motor stator 1, the slot number of the stator slot 11 of the motor stator 1 is 24 , wherein the number of main winding slots and auxiliary winding slots are 12 each, and the ratio of the number of stator slots of motor stator 1 to the number of rotor slots 21 of motor rotor 2 is 0.30.7. In this embodiment, the ratio of the number of stator slots of the motor stator 1 to the number of rotor slots 21 of the motor rotor 2 is 0.5.

The ratio of the stator outer diameter D1 of the motor stator 1 to the rotor outer diameter D2 of the motor rotor 2 is 0.68˜0.95. In this embodiment, the ratio of the stator outer diameter D1 of the motor stator 1 to the rotor outer diameter D2 of the motor rotor 2 is 0.75.

The ratio of the tooth width dimension T1 of the outer teeth of the stator to the tooth width dimension d1 of the inner teeth of the stator 1 of the motor stator 1 is 0.8˜1.7. In this embodiment, the ratio of the tooth width dimension T1 of the outer teeth of the stator 1 to the tooth width dimension d1 of the inner teeth of the stator 1 is 1.2.

The ratio of the rotor tooth width T2 to the yoke height d2 of the motor rotor 2 is 0.3-0.9. In this embodiment, the ratio of the rotor tooth width T2 of the motor rotor 2 to the yoke height d2 is 0.55.

The slot type of the stator slot 11 of the motor stator 1 adopts a double-row slot structure.

In addition, in the double-row slots of the above-mentioned motor stator 1, taking the outer circle of the stator as a reference, the windings embedded in the shallow slots are the main windings, and the windings embedded in the deep slots are the auxiliary windings. The double-row slots of the stator slots 11 of the above-mentioned motor stator 1 are pear-shaped slots or flat-bottomed slots and other shapes; the slots of the above-mentioned rotor slots 21 are flat slots.

In addition, stator stamping teeth 3 are arranged between adjacent slots of the stator slots 11 of the motor stator 1 . Between the adjacent slots of the rotor slots 21 of the motor rotor 2, rotor punching teeth 4 are arranged. In this embodiment, the stator punching teeth 3 and the rotor punching teeth 4 are all parallel teeth.

the

Claims (9)

1. capacitor-run asynchronous motor with six-pole outer rotors, include the motor stator (1) that is installed on the motor shaft and be sleeved on the rotor (2) in motor stator (1) outside, the groove number of the stator slot (11) of motor stator (1) is 24, main winding groove number and pay each 12 of slot for winding numbers wherein is characterized in that the ratio of groove number of the rotor (21) of the groove number of stator slot (11) of motor stator (1) and rotor (2) is 0.3～0.7.

2. 12 capacitor-run asynchronous motor with six-pole outer rotors according to claim 1 is characterized in that the ratio 0.68～0.95 of the rotor diameter D2 of the stator outer diameter D1 of above-mentioned motor stator (1) and rotor (2).

3. 12 capacitor-run asynchronous motor with six-pole outer rotors according to claim 2 is characterized in that the stator external tooth facewidth size T1 of above-mentioned motor stator (1) and the ratio 0.8～1.7 of stator internal tooth facewidth size d1.

4. 12 capacitor-run asynchronous motor with six-pole outer rotors according to claim 3 is characterized in that the rotor facewidth T2 of above-mentioned rotor (2) and the ratio 0.3～0.9 of the height d2 of yoke portion.

5. according to each described 12 capacitor-run asynchronous motor with six-pole outer rotors of claim 1 to 4, it is characterized in that the grooved of the stator slot (11) of above-mentioned motor stator (1) adopts double groove structure.

6. 12 capacitor-run asynchronous motor with six-pole outer rotors according to claim 5 is characterized in that being reference with the stator cylindrical in the double groove of above-mentioned motor stator (1), and it is main winding that shallow slot embeds winding, and deep trouth embeds winding for paying winding.

7. 12 capacitor-run asynchronous motor with six-pole outer rotors according to claim 6 is characterized in that the double groove of the stator slot (11) of above-mentioned motor stator (1) is pears type groove; The grooved of above-mentioned rotor (21) is the level land groove.

8. 12 capacitor-run asynchronous motor with six-pole outer rotors according to claim 7 it is characterized in that being provided with stator punching tooth (3) between the adjacent slot of stator slot (11) of above-mentioned motor stator (1), and stator punching tooth (3) are parallel teeth.

9. 12 capacitor-run asynchronous motor with six-pole outer rotors according to claim 8 is characterized in that being provided with rotor punching tooth (4) between the adjacent slot of rotor (21) of above-mentioned rotor (2), and rotor punching tooth (4) is parallel teeth.

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