Rotor and motor and compressor having the same
A rotor and rotor punching technology, applied in the direction of electromechanical devices, electrical components, electric components, etc., can solve the problems of increased difficulty in rotor optimization, difficulty in reducing air gap magnetic field harmonics, poor air gap accuracy, etc., to achieve small vibration, High concentricity and the effect of reducing harmonic content
Active Publication Date: 2020-03-31
GUANGDONG WELLING ELECTRIC MACHINE MFG +1
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
If the inner surface of the stator and the outer surface of the rotor are point-to-point, the accuracy of the air gap will be poor
[0003] However, if the inner circular surface of the stator and the outer circular surface of the rotor are a large range of concentric arcs to concentric arcs (that is, there are concentric arcs with a large span angle in the outer arc of the rotor core), it will lead to difficulty in rotor optimization. increase, it is difficult to reduce the air-gap magnetic field harmonics
[0004] Therefore, it is difficult for existing rotors to improve the accuracy of the air gap and reduce the harmonics of the air gap magnetic field
Method used
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Embodiment Construction
[0027] Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0028] A rotor 10 according to an embodiment of the present invention will be described below with reference to the drawings. Such as Figure 1-Figure 3 As shown, the rotor 10 according to the embodiment of the present invention includes a plurality of rotor punches 110 and a plurality of magnets (not shown in the figure).
[0029] Each rotor punch 110 is provided with a shaft hole 111 and a plurality of receiving grooves 112, and the outer edge of the cross section of each rotor punch 110 includes a plurality of circular arc segments 113, and each circular arc segment 113 includes a connected first circle The arc portion 114 and the second arc portion 115 .
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The invention discloses a rotor. The rotor comprises a plurality of rotor punching sheets and a plurality of magnets. Each rotor punching sheet is provided with a shaft hole and a plurality of accommodation grooves. An outer edge of a cross section of each rotor punching sheet comprises a plurality of arc segments. Each arc segment comprises a first arc portion whose center of circle is arranged at intervals with a central axis of the shaft hole and a second arc portion whose center of circle is located at the central axis of the shaft hole. The plurality of rotor punching sheets form a plurality of rotor punching sheet groups. Each rotor punching sheet group comprises at least one rotor punching sheet. The first arc portion of each rotor punching sheet of one of the two adjacent rotor punching sheet groups is opposite to the first arc portion or the second arc portion of each rotor punching sheet of the other one of the two adjacent rotor punching sheet groups along an axial direction of the rotor. The plurality of magnets are arranged in the plurality of accommodation grooves in a one-to-one correspondence mode. The rotor possesses advantages that the rotor is convenient for positioning; positioning is accurate; a concentricity with a stator is high; air gap precision is high; a harmonic wave content is low; vibration is small; and a noise is low and so on.
Description
technical field [0001] The invention relates to the field of motors, in particular to a rotor, and also to a motor and a compressor with the rotor. Background technique [0002] The rotor of the existing rotary compressor adopts a cantilever structure, that is, there is only one-sided bearing, so the air gap needs to be adjusted by means of tooling such as feeler gauges during the rotor installation process. The outer circular surface must be a large range of concentric arcs to concentric arcs in order to be well positioned. If the inner surface of the stator and the outer surface of the rotor are point-to-point, the accuracy of the air gap will be poor. [0003] However, if the inner circular surface of the stator and the outer circular surface of the rotor are a large range of concentric arcs to concentric arcs (that is, there are concentric arcs with a large span angle in the outer arc of the rotor core), it will lead to difficulty in rotor optimization. increase, it is...
Claims
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IPC IPC(8): H02K1/27
CPCH02K1/2773H02K2213/03
Inventor 王飞陈金涛
Owner GUANGDONG WELLING ELECTRIC MACHINE MFG