Rotor for electric motor and electric motor having same
A rotor and rotor core technology, applied in electrical components, electromechanical devices, electric components, etc., can solve the problems of small permanent magnet placement space and low magnetic concentration efficiency of permanent magnets, achieve excellent air gap magnetic field distribution, and improve air gap. Gap magnetic density, the effect of improving the magnetic concentration ability
Active Publication Date: 2018-06-15
GUANGDONG WELLING ELECTRIC MACHINE MFG +1
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0002] At present, motors such as permanent magnet brushless motors for air-conditioning fans mostly use surface-mounted magnetic tile rotor structures. In order to meet the energy efficiency requirements of the motor, the axial length of the permanent magnet is usually increased, and the air gap is increased by using the magnetic field concentration effect. Magnetic flux density, thus improving efficiency, however, permanent magnets have low magnetic flux gathering efficiency
[0003] The motor in the prior art adopts a built-in magnetic tile rotor structure to improve the magnetic gathering ability. However, in this structure, the outer peripheral surface of the rotor iron core adopts a three-section arc cutting method to form an uneven air gap to reduce the air gap magnetic field. Optimize so that after arc cutting, the placement position of the permanent magnet is compressed inward, and the placement space of the permanent magnet becomes smaller
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0031] Refer below figure 1 and figure 2 Describe the rotor 1 for a motor according to the embodiment of the first aspect of the present invention. The rotor 1 for a motor is suitable for a permanent magnet brushless motor with built-in magnetic tiles, which can improve the magnetic gathering ability and improve the air gap magnetic field without reducing the Placement space for small permanent magnets.
[0032] Such as figure 1 and figure 2 As shown, the rotor 1 for a motor according to the embodiment of the present invention incl...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a rotor for a motor and the motor with the rotor. The rotor for the motor comprises a rotor core and a plurality of permanent magnets, wherein the rotor core comprises a rotating shaft hole; the rotor core is provided with a slit which runs through the rotor core along the axial direction of the rotor core and the slit and the peripheral surface of the rotor core are arranged at an interval; the permanent magnets are internally arranged in the rotor core; in the cross section of the rotor core, each permanent magnet extends along the radial direction of the rotor core; the plurality of permanent magnets are arranged along the circumferential direction of the rotor core; and the homopolarity of the adjacent permanent magnets in the circumferential direction of the rotor core is opposite. According to the rotor for the motor, the magnetic concentrating capability can be improved; the air-gap field is improved; and the placement space for the permanent magnets is not reduced.
Description
technical field [0001] The invention relates to the technical field of motor manufacturing, in particular to a rotor for a motor and a motor with the rotor for a motor. Background technique [0002] At present, motors such as permanent magnet brushless motors for air-conditioning fans mostly use surface-mounted magnetic tile rotor structures. In order to meet the energy efficiency requirements of the motor, the axial length of the permanent magnet is usually increased, and the air gap is increased by using the magnetic field concentration effect. Magnetic density, thereby improving efficiency, however, the magnetic efficiency of permanent magnets is low. [0003] The motor in the prior art adopts a built-in magnetic tile rotor structure to improve the magnetic gathering ability. However, in this structure, the outer peripheral surface of the rotor iron core adopts a three-section arc cutting method to form an uneven air gap to reduce the air gap magnetic field. Optimization...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/27
CPCH02K1/2746
Inventor 朱嘉东王飞陈金涛
Owner GUANGDONG WELLING ELECTRIC MACHINE MFG