Motor rotor of refrigerator compressor

Abstract

The invention provides a motor rotor of a refrigerator compressor. The motor rotor comprises a rotor main body, wherein a hollow shaft hole is formed in the center of the rotor main body along the axial direction, and a group of wire slots, which run through back and forth along the axial direction of the rotor main body, are uniformly distributed at the outer periphery of the rotor main body. Themotor rotor is structurally characterized in that the wire slots are integrally of a V shape in the rotor main body, and a vertex of the V shape protrudes towards the direction of the shaft hole; theend face of each wire slot integrally consists of an inner end part, a main body part and an outer end part; each inner end part is semi-elliptical, and each main body part is of a trapezoid with a narrow inner part and a wide outer part; each outer end part is of a trapezoid with a wide inner part and a narrow outer part; arcs of outer-end groove tips of the wire slots are concentric with the outside diameter of the rotor main body; the wire slots are slender along the radial direction. According to the motor rotor of the refrigerator compressor, through improving the wire slots of the rotor, the performance and efficiency of startup of a refrigerator compressor motor adopting the rotor can be improved, harmonics of 3 times is effectively filtered out, the axial float of the motor rotoris prevented, and noises of the motor are reduced.

Description

technical field [0001] The invention relates to the technical field of refrigerator compressor motors, in particular to a motor rotor of a refrigerator compressor. Background technique [0002] At present, the motor rotor of the common refrigerator compressor usually has a short length of the winding slots on the rotor body in the radial direction of the rotor body, which is about one-fifth of the radius of the rotor body. The problem it brings is that the The starting response of the motor is slow and the noise is high; the slots are usually arranged in a straight line or oblique line in the axial direction of the rotor body. The disadvantage is that the 3rd harmonic has a great influence, and the motor rotor is prone to produce shafts during use. The outer port of the slot in the radial direction of the rotor body is usually round or pointed, which has the disadvantage that the leakage reactance of the rotor is relatively small, which affects the starting performance and e...

AI Technical Summary

Problems solved by technology

[0002] At present, the motor rotor of the common refrigerator compressor usually has a short length of the winding slots on the rotor body in the radial direction of the rotor body, which is about one-fifth of the radius of the rotor body. The problem it brings is that the The starting response of the motor is slow and the noise is high; the slots are usually arranged in a straight line or oblique line in the axial direction of the rotor body. The disadvantage is that the 3rd harmonic has a great influence, and the motor rotor is prone to produce shafts during use. The outer port of the wire slot in the radial direction of the rotor body is usually round or pointed, which has the disadvantage that the leakage reactance of the rotor is relatively small, which affects the starting performance and efficiency of the motor

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