Unlock instant, AI-driven research and patent intelligence for your innovation.

Rotors, motors, compressors and refrigeration equipment

A rotor and rotor core technology, applied in the field of compressors, can solve problems such as motor noise and affecting the competitiveness of compressor products

Active Publication Date: 2022-05-24
ANHUI MEIZHI PRECISION MFG
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In general, there are two situations for increasing the power density of a motor. One is to increase the speed, and the other is to increase the torque density. In order to increase the torque density, the motor with the same volume will increase the current and the armature magnetic field will increase. The excitation density of the motor will increase accordingly, which will cause motor noise problems and affect the competitiveness of compressor products

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Rotors, motors, compressors and refrigeration equipment
  • Rotors, motors, compressors and refrigeration equipment
  • Rotors, motors, compressors and refrigeration equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] like Figure 1 to Figure 4 As shown, according to the first aspect of the present invention, a rotor 1 is provided, comprising: a rotor iron core 102, a permanent magnet 106 and a plurality of slits, the plurality of slits include at least one first slit 108, a plurality of The slit is arranged on the rotor core 102 on the side of the installation slot 104 away from the axis of the rotor core 102, and the minimum distance between two adjacent slits among the plurality of slits is L2; ​​wherein, the first slit 108 The minimum value L1 of the width of the first slit 108 is set between the two ends of the first slit 108 along the length direction, and L2 is greater than or equal to 0.5 times of L1.

[0061] Specifically, the rotor iron core 102 is provided with an installation slot 104 , the permanent magnets 106 are arranged in the installation slot 104 and form magnetic poles, and are arranged in the rotor iron core 102 on the side of the installation slot 104 away from ...

Embodiment 2

[0067] like Figure 1 to Figure 4As shown, in one embodiment of the present invention, the rotor 1 includes: a rotor core 102, a permanent magnet 106, a first slit 108 and a second slit (not shown), wherein, based on the distance between the d-axis and the q-axis The rotor core 102 is provided with a plurality of slits, the plurality of slits include: at least two first slits 108; or at least one first slit 108 and at least one second slit, and the second slits are provided in On the rotor core 102 between the adjacent d-axis and q-axis, and located on one side or both sides of at least one first slit 108 .

[0068] In this embodiment, the number of slits on the rotor core 102 between the adjacent d-axis and q-axis is defined to be multiple. On the one hand, the multiple slits include at least two first slits 108 , that is, The multiple slits on the rotor core 102 between the d-axis and the q-axis are the first slits 108; on the other hand, the multiple slits include at least...

Embodiment 3

[0075] like Figure 1 to Figure 4 As shown, in one embodiment of the present invention, the rotor 1 includes: a rotor core 102, a permanent magnet 106, a first slit 108, a second slit and a transition portion 110 of the first slit 108, wherein the transition portion 110 The minimum value of the width is L1, and in the plane perpendicular to the axis of the rotor core 102, the side of the transition portion 110 is at least one of the following: a straight line, a curved line, and a bending line.

[0076] In this embodiment, the first slit 108 includes a transition portion 110 , and the minimum value of the width of the transition portion 110 is L1 , that is, the minimum value of the width of the first slit 108 is located at the transition portion 110 , perpendicular to the rotor core 102 . In the plane of the axis, the side of the transition portion 110 is a straight line, a curved line, a bending line or a combination thereof, and the transition portion 110 can be reasonably s...

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

No PUM Login to View More

Abstract

The invention provides a rotor, a motor, a compressor and a refrigeration device, wherein the rotor includes: a rotor iron core, the rotor iron core is provided with a mounting groove; a permanent magnet is arranged in the mounting groove and forms a magnetic pole; a plurality of narrow The slit is provided on the rotor core on the side of the installation groove away from the axis of the rotor core, and the minimum distance between two adjacent slits among the multiple slits is L2; ​​wherein, the multiple slits include at least one first A slit, the minimum value L1 of the width of the first slit is set between two ends along the length direction of the first slit, and L2 is greater than or equal to 0.5 times L1. The rotor provided by the present invention makes the end of the first slit close to the outer wall of the rotor iron core and the end close to the installation slot larger in size, which is beneficial to block the influence of the stator armature magnetic field on the rotor magnetic field, and is beneficial to improve the mechanical properties of the rotor. performance, while ensuring that the distance between two adjacent slits is within a reasonable range, which is beneficial to reducing magnetic flux loss.

Description

technical field [0001] The present invention relates to the technical field of compressors, and in particular, to a rotor, a motor, a compressor and a refrigeration device. Background technique [0002] At present, with the development of modern economy, people have higher and higher requirements for the cost, noise and energy efficiency of household appliances including compressors (such as air conditioners), and also put forward higher requirements for the compressor, the core component of household appliances Therefore, the current compressor industry is developing in the direction of miniaturization and light weight, and the motor is the power component of the compressor. High power density, high efficiency, low noise and low cost have become its main technical direction. [0003] Generally speaking, there are two situations to improve the power density of the motor, one is to increase the speed, and the other is to increase the torque density. In order to improve the to...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/276H02K21/02
CPCH02K1/276H02K21/02H02K2213/03H02K2201/03
Inventor 毛临书邱小华
Owner ANHUI MEIZHI PRECISION MFG