CN212969214U - Rotor structure of compressor motor - Google Patents
Rotor structure of compressor motor Download PDFInfo
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- CN212969214U CN212969214U CN202022305156.4U CN202022305156U CN212969214U CN 212969214 U CN212969214 U CN 212969214U CN 202022305156 U CN202022305156 U CN 202022305156U CN 212969214 U CN212969214 U CN 212969214U
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Abstract
A rotor structure of a compressor motor, comprising: an iron core having a top surface, a bottom surface and a side surface, the top surface and the bottom surface being opposite to each other, the side surface connecting the bottom surface and the top surface, the side surface being in a predetermined shape; the magnet is sleeved on the side surface of the iron core along the axial direction and is provided with a top ring surface, a bottom ring surface, an inner ring surface and an outer ring surface, the top ring surface and the bottom ring surface are opposite to each other, the inner ring surface and the outer ring surface are connected to the top ring surface and the bottom ring surface, and the inner ring surface is in a preset shape; the inner ring surface of the magnet and the side surface of the iron core are designed into a preset shape, so that the resistance (friction force) between the magnet and the iron core is increased, the adhesive between the magnet and the iron core is hardened and then fixed, the rotor is stronger, and the phenomenon that the magnet flies off or slides is avoided.
Description
Technical Field
The utility model discloses a compressor technical field particularly, relates to a rotor of compressor motor.
Background
The permanent magnet motor in the prior art is called a surface-mount permanent magnet motor, that is, the iron core in the rotor of the permanent magnet motor and the magnet sleeved on the periphery of the iron core are fixedly bonded to each other by an adhesive.
The rotor assembled by adhesion bonding is fixed after the iron core and the magnet can be aligned in the axial direction and are hardened by adhesion between the iron core and the magnet. In addition, in most of the applications of the permanent magnet motor micro-compressor, the adhesive between the iron core and the magnet is often deteriorated, i.e. the viscosity is reduced, due to the high temperature and high pressure in the internal environment and the influence of the refrigerant and the refrigerating machine oil. In the operation process of high-speed rotation, the iron core and the magnet may fly off or slide, which greatly reduces the reliability of the compressor or damages the compressor.
SUMMERY OF THE UTILITY MODEL
Therefore, the present invention provides a rotor structure of a compressor motor, which can fix the hardened viscose between the magnet and the iron core by increasing the resistance between the magnet and the iron core, so that the rotor is more robust and the magnet is prevented from falling off or sliding.
To achieve the above object, the present invention provides a rotor structure of a compressor motor, including:
an iron core having a top surface, a bottom surface and a side surface, the top surface and the bottom surface being opposite to each other, the side surface connecting the bottom surface and the top surface, the side surface being in a predetermined shape; and
the magnet is sleeved on the side surface of the iron core along the axial direction and is provided with a top ring surface, a bottom ring surface, an inner ring surface and an outer ring surface, the top ring surface and the bottom ring surface are opposite to each other, the inner ring surface and the outer ring surface are connected to the top ring surface and the bottom ring surface, and the inner ring surface is in a preset shape.
Preferably, the predetermined shape of the side surface of the iron core is a polygonal shape, and the iron core is a closed shape formed by a plurality of straight line segments; the predetermined shape of the inner ring surface of the magnet is a polygon shape and is a closed shape surrounded by a plurality of straight line segments.
Preferably, the number of poles of the rotor is N, the number of the trimming edges of the core is C, if N ≠ 0, then C/N >0 is satisfied, and the trimming edges are straight line segments.
Preferably, the predetermined shape of the side surface of the iron core is an irregular shape, and is a closed shape surrounded by more than one straight line segment and more than one arc segment; the preset shape of the inner ring surface of the magnet is an irregular shape, and is a closed shape formed by enclosing more than one straight line segment and more than one circular arc segment.
Preferably, the number of poles of the rotor is N, the number of the trimming edges of the core is C, if N ≠ 0, then C/N >0 is satisfied, and the trimming edges are straight line segments.
Preferably, the predetermined shape of the side surface of the iron core is a non-perfect circle shape, and the predetermined shape is a closed shape formed by enclosing more than one first arc segment and more than one second arc segment; the preset shape of the inner ring surface of the magnet is a non-perfect circle shape, and the magnet is a closed shape formed by more than one first arc section and more than one second arc section.
Preferably, the number of poles of the rotor is N, the number of the trimming edges of the core is C, if N ≠ 0, then C/N >0 is satisfied, and the trimming edges are first arc segments.
Preferably, the iron core is formed by stacking a plurality of silicon steel sheets.
Preferably, the core is either a single cylindrical block or a cylindrical core.
Preferably, the core is formed with a shaft hole and a plurality of through holes.
Compared with the prior art, the utility model discloses an efficiency lies in: the magnet is sleeved on the side surface of the iron core along the axial direction, and the magnet and the iron core are structurally changed, so that the cutting/stamping shape is simple and easy to process, the inner ring surface of the magnet and the side surface of the iron core are both set to be in a preset shape, and the resistance (friction) between the magnet and the iron core is increased, so that the magnet can be firmly fixed on the iron core, the phenomenon that the magnet flies off or slides is avoided, the reliability of the rotor is greatly improved, the phenomenon of original process stress concentration is improved, and the using amount of the magnet is increased to improve the performance; further, the resistance between the magnet and the iron core is increased, so that the adhesive between the magnet and the iron core is hardened and then fixed, the integral structure of the rotor is stronger, and the phenomenon that the magnet flies off or slides is avoided.
Drawings
Fig. 1 is a side view of the rotor of the present invention.
Fig. 2 is a top view of a first embodiment of the rotor of fig. 1 according to the present invention.
Fig. 3 is a top view of a second embodiment of the rotor of fig. 1 according to the present invention.
Fig. 4 is a top view of another embodiment of the rotor of fig. 1 according to the present invention.
Fig. 5 is a top view of a third embodiment of the rotor of fig. 1 according to the present invention.
Fig. 6 is a top view of another embodiment of the rotor of fig. 1 according to the present invention.
Description of the symbols:
1 central axis of rotor 10
11 top surface of iron core 111
112 bottom surface 113 side surface
114 axle hole 115 through hole
12 magnet 121 top ring surface
122 bottom ring surface 123 inner ring surface
124 outer annular surface
A1, A1 'arc segment A2, L2' first arc segment
A3, L3' second arc segment
L1, L1 'straight line segment L2, L2' straight line segment
Detailed Description
In order to understand the features, contents, advantages and effects of the present invention and the effects thereof, the present invention will be described in detail with reference to the drawings and the embodiments, wherein the drawings are used only for illustration and the auxiliary specification, and not necessarily for the actual proportion and the precise configuration of the present invention, so the scope of the right of the present invention in the actual implementation should not be read and limited with respect to the proportion and the configuration of the drawings.
The advantages, features and technical solutions of the present invention will be described in greater detail and can be better understood with reference to the exemplary embodiments and the accompanying drawings, and the present invention may be implemented in different forms, so should not be construed as limited to the embodiments set forth herein, but rather should be construed as providing embodiments that more fully convey the scope of the present invention to those skilled in the art and that the present invention is defined only by the appended claims.
First embodiment
Referring to fig. 1 and 2, fig. 1 is a side view of a rotor of the present invention, and fig. 2 is a top view of a first embodiment of the rotor of fig. 1 of the present invention.
The utility model discloses a rotor 1 is applied to the compressor, and this rotor 1 includes: a core 11 and a magnet 12, and the core 11 and the magnet 12 constituting the rotor 1 are rotated simultaneously in an integrated manner when the motor is operated. The iron core 11 is formed by extending a proper length along a central axis 10, the iron core 11 has a top surface 111, a bottom surface 112 and a side surface 113, the top surface 111 and the bottom surface 112 are opposite to each other, the side surface 113 connects the bottom surface 112 and the top surface 111, the side surface 113 is in a predetermined shape, so that the iron core 11 is in a predetermined configuration as a whole. The magnet 12 is formed by extending a proper length along the central axis 10, and is sleeved on the side surface 113 of the iron core 11 along the axial direction, the magnet 12 has a top ring surface 121, a bottom ring surface 122, an inner ring surface 123 and an outer ring surface 124, the top ring surface 121 and the bottom ring surface 122 are opposite to each other, the inner ring surface 123 and the outer ring surface 124 are connected to the top ring surface 121 and the bottom ring surface 122, the inner ring surface 123 is in a predetermined shape, so that the magnet 12 is in a predetermined configuration structure as a whole.
In this example, the predetermined shape of the side surface 113 of the core 11 is a polygonal shape, and the polygonal shape is a closed shape surrounded by a plurality of straight line segments L1; the predetermined shape of the inner annular surface 123 of the magnet 12 is a polygonal shape, and the polygonal shape is a closed shape surrounded by a plurality of straight line segments L1'; the number of poles of the rotor 1 is N, the number of the cut edges of the iron core 11 is C, if N is not equal to 0, the condition that C/N is greater than 0 is met, and the cut edges are the straight line segments L1; for example: the rotor with 10 poles is made into decagon, the rotor with 6 poles is made into hexagon, the inner ring surface 123 of the magnet 12 is made according to the side surface 113 of the iron core 11, the shapes of the iron core 11 and the magnet 12 are changed by cutting, the resistance between the iron core 11 and the magnet 12 can be greatly increased by adopting the design, the magnet 12 is not easy to slide or fly off after long-time operation, the reliability of the rotor 1 is greatly improved, and the phenomenon of original process stress concentration can be improved; in addition, the amount of the magnet can be increased according to the type of the magnet 12, so as to improve the counter electromotive force and achieve better performance.
In addition, the iron core 11 is formed by stacking a plurality of silicon steel sheets; alternatively, the core 11 is either a single cylindrical block or a cylindrical core; regardless of the structure of the core 11, the core 11 is formed with a shaft hole 114 and a plurality of through holes 115, and the through holes 115 surround the shaft hole 114; therefore, the position, size and shape of the through hole 115 of the core 11 are not limited, and may be designed according to practical applications to improve the oil circulation rate of the compressor.
Second embodiment
Referring to fig. 3 and 4, fig. 3 is a top view of a second embodiment of the rotor shown in fig. 1 according to the present invention, which is another structural top view of the second embodiment of the rotor shown in fig. 1 according to the present invention. The main difference from the first embodiment is that the predetermined shape of the side surface 113 of the iron core 11 is an irregular shape, and the irregular shape is a closed shape surrounded by more than one straight line segment L2 and more than one circular arc segment a 1; the predetermined shape of the inner ring surface 123 of the magnet 12 is an irregular shape, and the irregular shape is a closed shape surrounded by more than one straight line segment L2 'and more than one circular arc segment a 1'; the number of poles of the rotor 1 is N, the number of the cut edges of the core 11 is C, and if N ≠ 0, the condition that C/N >0 is satisfied, and the cut edges are straight line segments L2. Therefore, in order to improve the rotor 1 to improve the resistance between the core 11 and the magnet 12 and prevent the magnet 12 from flying or sliding, the core 11 and the magnet 12 are combined in an irregular shape, and besides the polygonal shape of the core 11 and the magnet 12 in the first embodiment, the second embodiment can be achieved by performing one of single-sided linear cutting/punching (as shown in fig. 3) or double-sided linear cutting/punching (as shown in fig. 4) on the core 11 and the magnet 12, and the phenomenon of original process stress concentration can be improved by the simple and easy machining of the cutting/punching shape.
In addition, the iron core 11 is formed by stacking a plurality of silicon steel sheets; alternatively, the core 11 is either a single cylindrical block or a cylindrical core; regardless of the structure of the core 11, the core 11 is formed with a shaft hole 114 and a plurality of through holes 115, and the through holes 115 surround the shaft hole 114; therefore, the position, size and shape of the through hole 115 of the core 11 are not limited, and may be designed according to practical applications to improve the oil circulation rate of the compressor.
Third embodiment
Referring to fig. 5 and 6, fig. 5 is a top view of a third embodiment of the rotor of fig. 1 according to the present invention, and fig. 6 is another structural top view of the third embodiment of the rotor of fig. 1 according to the present invention. The main difference between the first and second embodiments is that the predetermined shape of the side surface 113 of the core 11 is a non-perfect circular shape, and the non-perfect circular shape is a closed shape surrounded by more than one first arc segment a2 and more than one second arc segment A3; the predetermined shape of the inner annular surface 123 of the magnet 12 is a non-perfect circle shape, and the non-perfect circle shape is a closed shape surrounded by more than one first arc segment a2 'and more than one second arc segment A3'; the number of poles of the rotor 1 is N, the number of the cut edges of the core 11 is C, and if N ≠ 0, the condition that C/N >0 is satisfied, and the cut edges are the first arc segments a 2. Therefore, in order to improve the rotor 1 to improve the resistance between the core 11 and the magnet 12 and prevent the magnet 12 from flying or sliding, the core 11 and the magnet 12 are combined in a non-perfect circle shape, except for the polygonal shape of the core 11 and the magnet 12 in the first embodiment and the irregular shape of the core 11 and the magnet 12 in the second embodiment, a single-sided arc cutting/punching (as shown in fig. 5) or a double-sided arc cutting/punching (as shown in fig. 6) can be performed on the core 11 and the magnet 12 to achieve the third embodiment, and the cutting/punching shape is simple and easy to process, so that the phenomenon of original process stress concentration can be improved.
In addition, the iron core 11 is formed by stacking a plurality of silicon steel sheets; alternatively, the core 11 is either a single cylindrical block or a cylindrical core; regardless of the structure of the core 11, the core 11 is formed with a shaft hole 114 and a plurality of through holes 115, and the through holes 115 surround the shaft hole 114; therefore, the position, size and shape of the through hole 115 of the core 11 are not limited, and may be designed according to practical applications to improve the oil circulation rate of the compressor.
Therefore, according to the structure, the beneficial effects of the utility model are as follows:
the utility model discloses the side of this iron core is located to this magnet along axial direction cover, because this magnet passes through structural change with this iron core, all establish the interior anchor ring of this magnet and the side of this iron core into predetermined shape, reach and increase the resistance (frictional force) between this magnet and this iron core, make this magnet can firmly fix on this iron core, avoid this magnet to fly away or gliding phenomenon to take place, promote the reliability of this rotor by a wide margin, and can improve the phenomenon of original processing procedure stress concentration, and increase the magnet quantity and promote the performance; further, the resistance between the magnet and the iron core is increased, so that the adhesive between the magnet and the iron core is hardened and then fixed, the integral structure of the rotor is stronger, and the phenomenon that the magnet flies off or slides is avoided.
The above description is only an embodiment of the present invention, and the scope of the present invention should not be limited thereby, and all the simple equivalent changes and modifications made according to the claims and the contents of the patent specification of the present invention are still included in the scope covered by the present invention.
Claims (10)
1. A rotor structure of a compressor motor, comprising:
an iron core having a top surface, a bottom surface and a side surface, the top surface and the bottom surface being opposite to each other, the side surface connecting the bottom surface and the top surface, the side surface being in a predetermined shape; and
the magnet is sleeved on the side surface of the iron core along the axial direction and is provided with a top ring surface, a bottom ring surface, an inner ring surface and an outer ring surface, the top ring surface and the bottom ring surface are opposite to each other, the inner ring surface and the outer ring surface are connected to the top ring surface and the bottom ring surface, and the inner ring surface is in a preset shape.
2. The rotor structure of a compressor motor as claimed in claim 1, wherein the predetermined shape of the side surface of the core is a polygonal shape, a closed shape surrounded by a plurality of straight line segments; the predetermined shape of the inner ring surface of the magnet is a polygon shape and is a closed shape surrounded by a plurality of straight line segments.
3. The structure of a rotor for a compressor motor as claimed in claim 2, wherein the number of poles of the rotor is N, the number of the cut edges of the core is C, and if N ≠ 0, it satisfies C/N >0, and the cut edges are straight line segments.
4. The rotor structure of a compressor motor as claimed in claim 1, wherein the predetermined shape of the side surface of the core is an irregular shape, a closed shape surrounded by one or more straight line segments and one or more circular arc segments; the preset shape of the inner ring surface of the magnet is an irregular shape, and is a closed shape formed by enclosing more than one straight line segment and more than one circular arc segment.
5. The structure of a rotor for a compressor motor according to claim 4, wherein the number of poles of the rotor is N, the number of the cut edges of the core is C, and if N ≠ 0, C/N >0 is satisfied, and the cut edges are straight line segments.
6. The rotor structure of a compressor motor according to claim 1, wherein the predetermined shape of the side surface of the core is a non-perfect circle shape, a closed shape surrounded by one or more first arc segments and one or more second arc segments; the preset shape of the inner ring surface of the magnet is a non-perfect circle shape, and the magnet is a closed shape formed by more than one first arc section and more than one second arc section.
7. The structure of a rotor for a compressor motor according to claim 6, wherein the number of poles of the rotor is N, the number of the cut edges of the core is C, and if N ≠ 0, C/N >0 is satisfied, and the cut edges are first arc segments.
8. The rotor structure of a compressor motor as claimed in claim 1, wherein the core is constructed by stacking a plurality of silicon steel sheets.
9. The rotor structure of a compressor motor according to claim 1, wherein the core is either one of a single cylindrical block or a cylindrical core.
10. The rotor structure of a compressor motor as claimed in claim 1, wherein the core is formed with a shaft hole and a plurality of through holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022305156.4U CN212969214U (en) | 2020-10-16 | 2020-10-16 | Rotor structure of compressor motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022305156.4U CN212969214U (en) | 2020-10-16 | 2020-10-16 | Rotor structure of compressor motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212969214U true CN212969214U (en) | 2021-04-13 |
Family
ID=75372028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022305156.4U Active CN212969214U (en) | 2020-10-16 | 2020-10-16 | Rotor structure of compressor motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212969214U (en) |
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2020
- 2020-10-16 CN CN202022305156.4U patent/CN212969214U/en active Active
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