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Refrigerator compressor motor rotor

A technology for refrigerator compressors and motor rotors, applied in electromechanical devices, electrical components, electric components, etc., can solve problems affecting motor startup performance and efficiency, axial movement of motor rotors, and slow motor startup response, etc., to achieve improved startup performance performance, reducing the stator-rotor air gap, and the effect of large starting torque

Active Publication Date: 2020-06-12
江苏洛克电气集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Refrigerator compressor motor rotor
  • Refrigerator compressor motor rotor
  • Refrigerator compressor motor rotor

Examples

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Embodiment 1)

[0017] See Figure 1 to Figure 4 , The motor rotor of the refrigerator compressor in this embodiment includes a rotor body 1, the rotor body 1 is in the shape of a cylinder as a whole, and the center of the rotor body 1 is provided with a hollow shaft hole 1-1 along the axial direction.

[0018] A group of wire grooves 2 are evenly arranged on the outer periphery of the rotor body 1, and each wire groove 2 is arranged through the rotor body 1 from the front end surface to the rear end surface of the rotor body 1, and each wire groove 2 is arranged in a V shape in the rotor body 1 as a whole, And the apex of the V shape protrudes toward the direction of the shaft hole 1-1, such as figure 2 shown.

[0019] see image 3 with Figure 4 , The end surface (that is, the section) of the trunking 2 is composed of an inner end 21 , a main body 22 and an outer end 23 in one piece. Inner end 21 is a half ellipse, and main body 22 is a trapezoid that is narrow inside and wide outside;...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/26
CPCH02K1/265H02K2213/03
Inventor 阮正亚张俊
Owner 江苏洛克电气集团有限公司
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