Stator punching of single-phase capacitor-run motor

Abstract

The invention discloses a stator punching of a single-phase capacitor-run motor. The center of the stator punching is provided with a hollow inner round hole; a plurality of winding slots are arranged along the radial direction of the stator punching; a stator tooth is formed between the adjacent winding slots; a salient pole is formed at the end part of each stator tooth; and the salient poles are evenly distributed towards the edge of the hollow inner round hole. The dimensions of the stator punching are shown as follows: the diameter of the excircle of the stator punching is 88.00-88.03mm; the diameter of the hollow inner round hole is 50.00-50.046mm; the stator teeth are parallel teeth and are 4.9-5.1mm wide and 6.85-6.95mm high; the notch of each winding slot is 1.80-1.85mm wide; notches are 0.48-0.52mm high; slot shoulders are 0.75-0.85mm high; and the diameter of a circle on which slot bases are located is 66.30-66.50mm. According to the stator punching disclosed by the invention, as a brand-new inner diameter, outer diameter and groove dimensional design is adopted, flux density distribution of all parts in a magnetic circuit are fully matched, so that the energy efficiency of the motor is improved by 5-10 percent. Meanwhile, the demand of enameled wires and steel products of the single-phase capacitor-run motor is 7-10 percent lower than that of motors with the same power level as the single-phase capacitor-run motor. The stator punching of the single-phase capacitor-run motor is excellent in performance and is convenient for serving as the stator punching for high-power split air conditioner internal units.

Description

technical field [0001] The invention relates to a stator punch of a motor, in particular to a stator punch of a single-phase capacitor-operated motor, which is mainly used as a stator punch of an air-conditioning fan motor, and belongs to a high-energy-efficiency stator punch for a high-power split air-conditioning indoor unit motor. chip design technology. Background technique [0002] The outer diameter of the single-phase capacitor-operated plastic case motor for traditional household split air conditioners is Φ92mm. The outer diameter of the inner stator punch is Φ78mm, such as figure 1 shown. When this kind of traditional stator is used to design a high-power split air conditioner indoor unit fan motor, it has the following disadvantages: 1. The winding is directly wound on the forehead of the stator, and the efficiency of the motor is generally about 40%, which is relatively low; The width of the large teeth is small, the magnetic density of the motor teeth is too ...

AI Technical Summary

Problems solved by technology

When this kind of traditional stator is used to design a high-power split air conditioner indoor unit fan motor, it has the following disadvantages: 1. The winding is directly wound on the forehead of the stator, and the efficiency of the motor is generally about 40%, which is relatively low; The width of the large teeth is small, the magnetic density of the motor teeth is too high, the effective utilization of the windings is low, and the efficiency of the motor cannot be improved.

2. Generally, the output power is designed to 30W at the rated speed, which cannot meet the requirements in terms of efficiency and temperature rise.

3. On the premise of keeping the overall outer diameter of the motor unchanged at 92mm, the efficiency of the motor is increased to 50%-55% and above, and the output power cannot be realized at the rated speed of 30W-45W

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