CN110768425A - Motor based on rotor round edge design and electric appliance adopting motor - Google Patents
Motor based on rotor round edge design and electric appliance adopting motor Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 30
- 239000010959 steel Substances 0.000 claims abstract description 30
- 108700041286 delta Proteins 0.000 claims abstract description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 30
- 229910052742 iron Inorganic materials 0.000 abstract description 15
- -1 delta Proteins 0.000 abstract 1
- 239000006185 dispersion Substances 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 241000237503 Pectinidae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
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Abstract
The invention provides a motor designed based on a rotor round edge and an electric appliance adopting the motor, which relate to the technical field of motors and aim to solve the problems of generation of a large amount of harmonic waves, higher motor noise and lower motor efficiency, wherein the rotor round edge in the motor comprises a first scattering point, a second scattering point, a third scattering point, a fourth scattering point and a fifth scattering point which are sequentially arranged, and the second scattering point is positioned on a bisector of a magnetic steel groove passing through the center of a rotor assembly; the transverse distances among the first scattered point, the second scattered point, the third scattered point, the fourth scattered point and the fifth scattered point are equal and are marked as delta L; taking a stator tooth round edge of a stator tooth part as a reference, respectively forming air gaps delta 1, delta, delta 1, delta 2 and delta 3 between the rotor round edge and the stator tooth round edge at each scattered point, wherein delta is a minimum air gap; where Δ δ 1 is Δ δ/cos θ, Δ δ 2 is Δ δ/cos (θ + Δ θ), Δ δ 3 is Δ δ/(θ +2 Δ θ), and θ and Δ θ cooperate to make the air-gap magnetic field sinusoidal. The electric appliance adopts the motor, and the motor can effectively reduce counter electromotive force harmonic waves, reduce the iron loss of the motor and improve the efficiency of the motor.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a motor based on rotor round edge design and an electric appliance adopting the motor.
Background
The motor noise mainly comes from electromagnetic vibration, most of the air gaps of the stator and the rotor of the motor are uniformly distributed at present, and a large amount of harmonic waves exist in a uniform air gap magnetic field, so that the motor iron loss and the motor noise are serious, and the motor performance is influenced. In order to improve the air gap magnetic field, an uneven air gap is often designed, for example, a stator tooth end slot, an uneven magnetic steel design, a stator winding distribution and the like are adopted.
This application designs the motor with another kind of form and improves motor back electromotive force wave form, reduces motor back electromotive force harmonic, reduces motor iron loss, improves motor efficiency.
Disclosure of Invention
The invention aims to design a motor designed based on a rotor round edge and an electric appliance adopting the motor, which can effectively reduce counter potential harmonic waves, reduce the iron loss of the motor and improve the efficiency of the motor.
The invention is realized by the following technical scheme:
the invention provides a motor designed based on a rotor round edge, which comprises a rotor assembly and a stator assembly, wherein the rotor assembly is provided with magnetic steel grooves distributed at intervals in the circumferential direction and magnetic steel arranged in the magnetic steel grooves, and the length of the magnetic steel is L; the stator component is provided with stator teeth which are arranged at intervals in the circumferential direction; the outer circle of the rotor assembly comprises a plurality of sections of rotor round edges, each rotor round edge comprises a first scattering point, a second scattering point, a third scattering point, a fourth scattering point and a fifth scattering point which are sequentially arranged along the circumferential direction, and the second scattering point is positioned on a bisector of the magnetic steel slot passing through the center of the rotor assembly; from the second scattering point along the tangential direction of the rotor round edge, the transverse distances of the first scattering point, the second scattering point, the third scattering point, the fourth scattering point and the fifth scattering point are all equal, and the transverse distance between adjacent scattering points is marked as delta L; taking a stator tooth circular edge of the stator tooth part as a reference, and respectively forming air gaps delta 1, delta 1, delta 2 and delta 3 between the rotor circular edge and the stator tooth circular edge at the first scattering point, the second scattering point, the third scattering point, the fourth scattering point and the fifth scattering point, wherein delta is a minimum air gap; where Δ δ 1 is Δ δ/cos θ, Δ δ 2 is Δ δ/cos (θ + Δ θ), Δ δ 3 is Δ δ/(θ +2 Δ θ), and θ and Δ θ are angles set to make the air-gap magnetic field approach a sine.
When the structure is arranged, the scheme is different from the mode of obtaining uneven air gaps in the prior art, is based on the rotor round edge design, and obtains the motor based on the rotor round edge design through analyzing the air gaps of the stator and the rotor. In order to enable the magnetic field distribution in the air gap to be close to a sine wave as much as possible, the rotor round edge is designed by taking the minimum air gap delta, the length L of the magnetic steel and the stator tooth round edge as design references, and an uneven air gap is obtained. And the second scattering point is taken as a reference, the second scattering point transversely moves in the left-right direction along the tangential direction passing through the second scattering point by delta L to obtain a first scattering point of an air gap delta 1, a third scattering point of the air gap delta 1, a fourth scattering point of delta 2 and a fifth scattering point of an air gap delta 3, so that the rotor circle passes through the scattering points, the counter potential harmonic waves can be effectively reduced, the iron loss of the motor is reduced, and the efficiency of the motor is improved.
In order to further better implement the invention, the following arrangement structure is particularly adopted: the air gap relationship satisfies: delta delta < Delta delta 1 < Delta delta 2 < Delta delta 3.
In order to further better implement the invention, the following arrangement structure is particularly adopted: delta L is less than or equal to 1/6L.
In order to further better implement the invention, the following arrangement structure is particularly adopted: when Δ L is 1/6L, 0.7< θ/Δ θ < 1.5.
In order to further better implement the invention, the following arrangement structure is particularly adopted: when Δ L is 1/6L, θ and Δ θ satisfy: 13 ° < θ <17 °, 14 ° < Δ θ <16 °.
In order to further better implement the invention, the following arrangement structure is particularly adopted: the rotor round edge comprises a first round edge, a second round edge and a third round edge which are sequentially connected; the first scatter point, the second scatter point and the third scatter point are on the first circular edge, and the first scatter point and the third scatter point are end points of the first circular edge; the third scatter point, the fourth scatter point and the fifth scatter point are on the second circle, and the third scatter point and the fifth scatter point are end points of the second circle; the third circular edge is an arc segment which passes through the fifth scattering point, takes the center of the rotor assembly as the circle center, takes the distance between the fifth scattering point and the center of the rotor assembly as the radius, and the fifth scattering point is the end point of the third circular edge.
When the structure is adopted, the design of sectional type round edges is adopted to obtain uneven air gaps so as to improve the distribution of air gap magnetic fields (close to sine), reduce the counter potential distortion rate, reduce the noise of the motor, reduce the iron loss of the motor and further improve the efficiency of the motor.
In order to further better implement the invention, the following arrangement structure is particularly adopted: and all the rotor circular edges are sequentially connected end to end through the circular edges to form a complete excircle.
In order to further better implement the invention, the following arrangement structure is particularly adopted: the rotor circular edge further comprises a fourth circular edge, the end point of the head end of the fourth circular edge is the fifth scattered point, and the end point of the fourth circular edge is in common with the first scattered point of the head end of the other section of the rotor circular edge.
In order to further better implement the invention, the following arrangement structure is particularly adopted: the excircle of the rotor component comprises a sixth dispersion point, an air gap delta 2 is formed between the rotor circular edge and the stator tooth circular edge at the sixth dispersion point, and the sixth dispersion point is located on the fourth circular edge.
When the structure is adopted, the rotor assembly adopts a sectional type round edge design, an uneven air gap is obtained between the rotor assembly and the stator tooth part, the distribution of an air gap magnetic field (close to sine) is improved, the back electromotive force distortion rate is reduced, the motor noise is reduced, the iron loss of the motor is reduced, and the motor efficiency is further improved.
In order to further better implement the invention, the following arrangement structure is particularly adopted: and a rotor core of the rotor assembly is provided with a magnetic beam arranging groove.
When the structure is adopted, the magnetic beam arrangement grooves are formed in the rotor, the magnetic beam arrangement grooves can standardize air gap magnetic circuits, the air gap magnetic circuits are vertically distributed, the air gaps are distributed in a sine mode by matching with the rotor round edges, and the magnetic beam arrangement grooves are helpful for reducing noise of the motor.
In order to further better implement the invention, the following arrangement structure is particularly adopted: the magnetic beam arrangement groove is positioned on the outer side of the magnetic steel groove.
The invention also provides an electric appliance, and the motor based on the rotor round edge design is adopted.
When the structure is adopted, the noise of the motor used by the electric appliance is low, the iron loss of the motor is low, and the efficiency of the motor is high.
The invention has the following advantages and beneficial effects:
(1) the invention discloses a motor which is different from a mode of obtaining uneven air gaps in the prior art. In order to enable the magnetic field distribution in the air gap to be close to a sine wave as much as possible, the rotor round edge is designed by taking the minimum air gap delta, the length L of the magnetic steel and the stator tooth round edge as design references, and an uneven air gap is obtained. And the second scattering point is taken as a reference, the second scattering point transversely moves in the left-right direction along the tangential direction passing through the second scattering point by delta L to obtain a first scattering point of an air gap delta 1, a third scattering point of the air gap delta 1, a fourth scattering point of delta 2 and a fifth scattering point of an air gap delta 3, so that the rotor circle passes through the scattering points, the counter potential harmonic waves can be effectively reduced, the iron loss of the motor is reduced, and the efficiency of the motor is improved.
(2) In the invention, the noise of the motor used by the electric appliance is low, the iron loss of the motor is low, and the efficiency of the motor is high.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a rotor assembly and a stator assembly in an electric machine;
FIG. 2 is a partial schematic view of section A of FIG. 1;
FIG. 3 is a schematic diagram of the position relationship and relative sizes of the scatter points;
FIG. 4 is a schematic view of a first rounded edge;
FIG. 5 is a schematic view of a second rounded edge;
FIG. 6 is a schematic view of a third rounded edge and a fourth rounded edge;
FIG. 7 is a simulated back emf waveform of the motor at 3600 rpm;
FIG. 8 is a histogram of Fourier transforms from simulation data;
labeled as:
1-rotor round edge; 2-stator tooth round edge; 3-magnetic beam arrangement groove; 4-magnetic steel grooves; 5-magnetic steel;
10-first scatter; 11-second scatter; 12-third scatter; 13-fourth scatter; 14-fifth scatter; 15-sixth scatter;
101-a first rounded edge; 102-a second rounded edge; 103-a third rounded edge; 104-fourth rounded edge.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Example 1:
a motor designed based on a rotor round edge can effectively reduce counter potential harmonic waves, reduce the iron loss of the motor and improve the efficiency of the motor, and is particularly arranged into the following structures as shown in figures 1-8:
the electric machine includes a rotor assembly and a stator assembly. The rotor core of this rotor subassembly has six magnetic steel grooves 4, and six magnetic steel grooves 4 all have installed corresponding magnet steel 5 along rotor core's circumferential direction interval distribution in each magnetic steel groove 4, and wherein, the length of magnet steel 5 is marked as L.
The stator assembly has circumferentially spaced stator teeth, the inner edges of which form stator teeth scallops 2.
In this embodiment, for convenience of description, the motor is horizontally placed, a magnetic steel 5 of the rotor assembly located at the top is horizontally arranged, the upper side of the magnetic steel 5 is opposite to a stator tooth portion, and the magnetic steel 5 located at the top is taken as an example for description.
Rotor assembly's excircle includes rotor circle limit 1 that the multistage connects gradually to rotor circle limit 1 that 5 magnet steel that the top corresponds is the example, and wherein, rotor circle limit 1 includes the first scattered point 10, the second that arranges in proper order along rotor assembly's excircle circumference, the scattered point 11 of second, the third scatters point 12, the scattered point 13 of fourth and the scattered point 14 of fifth, and the second scatters a little 11 and is located the bisector of the magnet steel groove 4 at rotor assembly center.
In order to make the magnetic field distribution in the air gap as close to a sine wave as possible, the second scattering point 11 is taken as a reference, the rest scattering points are distributed on two sides of the second scattering point 11, the second scattering point 11 is positioned at the position of the minimum air gap, specifically, the transverse distances of the first scattering point 10, the second scattering point 11, the third scattering point 12, the fourth scattering point 13 and the fifth scattering point 14 are all equal from the second scattering point 11 along the tangential direction (transverse direction) of the rotor round edge 1, the first scattering point 10 is positioned on the left side of the second scattering point 11, the rest scattering points are positioned on the right side of the second scattering point 11, and the transverse distance between adjacent scattering points is marked as Δ L; taking a stator tooth round edge 2 of a stator tooth part as a reference, forming an air gap delta 1 between a rotor round edge 1 and the stator tooth round edge 2 at a first scattering point 10 and a third scattering point 12, forming a minimum air gap delta between the rotor round edge 1 and the stator tooth round edge 2 at a second scattering point 11, forming an air gap delta 2 between the rotor round edge 1 and the stator tooth round edge 2 at a fourth scattering point 13, forming an air gap delta 3 between the rotor round edge 1 and the stator tooth round edge 2 at a fifth scattering point 14, wherein delta is the minimum air gap; where Δ δ 1 is Δ δ/cos θ, Δ δ 2 is Δ δ/cos (θ + Δ θ), Δ δ 3 is Δ δ/(θ +2 Δ θ), and θ and Δ θ are angles set to make the air-gap magnetic field approach a sine.
The rotor round edge 1 comprises a first round edge 101, a second round edge 102 and a third round edge 103, the first round edge 101, the second round edge 102 and the third round edge 103 are sequentially connected, and all the rotor round edges 1 are sequentially connected end to end through the round edges to form a complete excircle. The first scattered point 10, the second scattered point 11 and the third scattered point 12 are arranged on a first circular edge 101, and the first scattered point 10 and the third scattered point 12 are end points of the first circular edge 101; the third scatter point 12, the fourth scatter point 13 and the fifth scatter point 14 are on the second circular edge 102, and the third scatter point 12 and the fifth scatter point 14 are end points of the second circular edge 102; the third circular edge is a fifth scattering point 14, the center of the rotor assembly is used as a circle center, the distance between the fifth scattering point 14 and the center of the rotor assembly is used as a radius circular arc section, and the fifth scattering point 14 is an end point of the third circular edge 103. By adopting a sectional type round edge design, an uneven air gap is obtained, so that the distribution of an air gap magnetic field (close to sine) is improved, the counter potential distortion rate is reduced, the noise of the motor is reduced, the iron loss of the motor is reduced, and the efficiency of the motor is further improved.
Wherein the air gap relationship satisfies: delta is more than delta 1 and more than delta 2 and more than delta 3; when Δ L is 1/6L or less and Δ L is 1/6L, θ and Δ θ satisfy: 0.7< theta/delta theta <1.5, and further theta and delta theta satisfy: 13 deg. < theta <17 deg., 14 deg. < delta theta <16 deg., to obtain better air-gap magnetic field distribution effect.
The scheme is different from the mode of obtaining uneven air gaps in the prior art, is based on rotor round edge design, and obtains the motor based on rotor round edge design through analysis of stator and rotor air gaps. The ideal sine air gap flux density air gap design meets the following requirements: in order to make the magnetic field distribution in the air gap approach to a sine wave as much as possible, the rotor round edge 1 is designed by taking the minimum air gap delta, the length L of the magnetic steel and the stator tooth round edge 2 as design references, and uneven air gaps are obtained by the formula, so that the air gap magnetic field distribution tends to be sinusoidal. By taking the second scattering point 11 as a reference, transversely moving the second scattering point in the left-right direction along the tangential direction of the second scattering point by delta L to obtain a first scattering point 10 of the air gap delta 1, a third scattering point 12 of the air gap delta 1, a fourth scattering point 13 of the delta 2 and a fifth scattering point 14 of the air gap delta 3, so that the rotor round edge passes through the scattering points, the counter potential harmonic waves can be effectively reduced, the iron loss of the motor is reduced, and the efficiency of the motor is improved.
The adjacent rotor circular edges 1 can be connected through the excircle of the straight line segment and can also be connected through the circular edges. In the embodiment, the circular edge is taken as an example of a connection node, the rotor circular edge 1 further includes a fourth circular edge 104, a head end point of the fourth circular edge 104 is a fifth scattering point 14, and a tail end point of the fourth circular edge 104 is concurrent with the first scattering point 10 at the head end of another segment of the rotor circular edge 1. Preferably, the outer circle of the rotor assembly includes a sixth scattering point 15, an air gap Δ δ 2 is formed between the rotor circular edge 1 and the stator tooth circular edge 2 at the sixth scattering point 15, and the sixth scattering point 15 is located on the fourth circular edge 104. The rotor assembly adopts a sectional type round edge design, obtains uneven air gaps with the stator tooth part, improves the distribution of an air gap magnetic field (close to sine), reduces the counter potential distortion rate, reduces the noise of the motor, reduces the iron loss of the motor and further improves the efficiency of the motor.
Preferably, the rotor core of the rotor assembly is provided with a magnetic beam arranging groove 3, and the magnetic beam arranging groove 3 is positioned outside the magnetic steel groove 4. After the magnetic beam arrangement grooves are formed in the rotor, the magnetic beam arrangement grooves can standardize an air gap magnetic circuit, the harmonic content of the motor can be reduced, the air gap magnetic circuit is vertically distributed along the vertical direction, and the magnetic field distribution in the air gap is closer to sinusoidal distribution by matching with the rotor round edge. In addition, the magnetic beam arrangement groove is helpful to the noise reduction of the motor.
A simulation model is constructed based on the design of the round edge of the rotor, and the counter electromotive force of the motor at the rotating speed of 3600rpm is obtained through simulation, as shown in figure 7. The amplitude of the back electromotive voltage under each frequency is obtained by performing Fourier transform on the back electromotive voltage, as shown in Table 1, a histogram is generated according to Table 1, as shown in FIG. 8, even harmonics are low in content and can be ignored during Fourier analysis, odd harmonics are mainly calculated, and the calculated back electromotive voltage harmonic distortion rate is only 2.6%.
Table 1: fourier transform is carried out on the counter electromotive force to obtain the amplitude of the counter electromotive force voltage under each frequency
| |
1 | 3 | 5 | 7 | 9 | 11 | 13 |
| Amplitude value | 265.0895 | 0.19331 | 0.26207 | 1.13779 | 0.20629 | 1.37736 | 3.87114 |
Example 2:
the present embodiment provides an electric appliance based on embodiment 1, and particularly adopts the following arrangement structure:
this embodiment provides an electric appliance, the electric appliance adopts a motor designed based on the rotor round edge in embodiment 1, and may be an air conditioner, a refrigerator, a blower fan, or the like, which adopts a motor designed based on the rotor round edge in embodiment 1. Because the motor used by the electric appliance has low noise, low iron loss of the motor and high efficiency of the motor, the electric appliance has better use effect.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.
Claims (11)
1. The utility model provides a motor based on design of rotor round edge which characterized in that: the rotor assembly is provided with magnetic steel grooves (4) distributed at intervals in the circumferential direction and magnetic steel (5) arranged in the magnetic steel grooves (4), and the length of the magnetic steel (5) is L; the stator component is provided with stator teeth which are arranged at intervals in the circumferential direction;
the outer circle of the rotor assembly comprises a plurality of sections of rotor round edges (1), the rotor round edges (1) comprise a first scattering point (10), a second scattering point (11), a third scattering point (12), a fourth scattering point (13) and a fifth scattering point (14) which are sequentially arranged along the circumferential direction, and the second scattering point (11) is positioned on a bisector of the magnetic steel groove (4) passing through the center of the rotor assembly;
from the second scattering point (11) along the tangential direction of the rotor round edge (1), the transverse distances of the first scattering point (10), the second scattering point (11), the third scattering point (12), the fourth scattering point (13) and the fifth scattering point (14) are all equal, and the transverse distance between adjacent scattering points is marked as delta L;
taking a stator tooth round edge (2) of the stator tooth part as a reference, and respectively forming air gaps delta 1, delta 1, delta 2 and delta 3 between the rotor round edge (1) and the stator tooth round edge (2) at a first scattering point (10), a second scattering point (11), a third scattering point (12), a fourth scattering point (13) and a fifth scattering point (14), wherein delta is a minimum air gap;
where Δ δ 1 is Δ δ/cos θ, Δ δ 2 is Δ δ/cos (θ + Δ θ), Δ δ 3 is Δ δ/(θ +2 Δ θ), and θ and Δ θ are angles set to make the air-gap magnetic field approach a sine.
2. The motor designed based on the rotor round edge as claimed in claim 1, characterized in that: the air gap relationship satisfies: delta delta < Delta delta 1 < Delta delta 2 < Delta delta 3.
3. The motor designed based on the rotor round edge as claimed in claim 1, characterized in that: delta L is less than or equal to 1/6L.
4. A motor designed based on a rotor rim as claimed in claim 3, wherein: when Δ L is 1/6L, 0.7< θ/Δ θ < 1.5.
5. The motor designed based on the rotor round edge is characterized in that: when Δ L is 1/6L, θ and Δ θ satisfy: 13 ° < θ <17 °, 14 ° < Δ θ <16 °.
6. A motor designed based on a rotor rim according to any one of claims 1 to 5, characterized in that: the rotor round edge (1) comprises a first round edge (101), a second round edge (102) and a third round edge (103) which are sequentially connected;
the first scatter point (10), the second scatter point (11), and the third scatter point (12) are on the first circular edge (101), the first scatter point (10) and the third scatter point (12) being end points of the first circular edge (101);
the third, fourth and fifth scatter (12, 13, 14) being on the second circular side (102), the third and fifth scatter (12, 14) being end points of the second circular side (102);
the third circular edge passes through the fifth scattering point (14), the center of the rotor assembly is used as a circle center, the distance between the fifth scattering point (14) and the center of the rotor assembly is used as a radius arc section, and the fifth scattering point (14) is an end point of the third circular edge (103).
7. The motor designed based on the rotor round edge as claimed in claim 6, characterized in that: the rotor round edge (1) further comprises a fourth round edge (104), the head end point of the fourth round edge (104) is the fifth scattering point (14), and the tail end point of the fourth round edge (104) is in common with the first scattering point (10) at the head end of the rotor round edge (1) at the other section which is connected with the tail end point of the fourth round edge.
8. The motor designed based on the rotor round edge as claimed in claim 7, wherein: the excircle of the rotor assembly comprises a sixth scattering point (15), an air gap delta 2 is formed between the rotor round edge (1) and the stator tooth round edge (2) at the sixth scattering point (15), and the sixth scattering point (15) is located on the fourth round edge (104).
9. The motor designed based on the rotor round edge as claimed in claim 1, characterized in that: and a rotor core of the rotor assembly is provided with a magnetic beam arranging groove (3).
10. The motor designed based on the rotor round edge as claimed in claim 9, wherein: the magnetic beam arrangement groove (3) is positioned on the outer side of the magnetic steel groove (4).
11. An electrical appliance, characterized by: an electrical machine using a rotor rim based design according to any of claims 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911049387.9A CN110768425A (en) | 2019-10-31 | 2019-10-31 | Motor based on rotor round edge design and electric appliance adopting motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911049387.9A CN110768425A (en) | 2019-10-31 | 2019-10-31 | Motor based on rotor round edge design and electric appliance adopting motor |
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| Publication Number | Publication Date |
|---|---|
| CN110768425A true CN110768425A (en) | 2020-02-07 |
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|---|---|---|---|
| CN201911049387.9A Pending CN110768425A (en) | 2019-10-31 | 2019-10-31 | Motor based on rotor round edge design and electric appliance adopting motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113285537A (en) * | 2020-02-19 | 2021-08-20 | 莱克电气股份有限公司 | Motor and washing machine with low harmonic vibration, low loss and low noise |
| CN113839490A (en) * | 2020-06-24 | 2021-12-24 | 莱克电气股份有限公司 | Rotor, efficient low-noise motor and application thereof |
-
2019
- 2019-10-31 CN CN201911049387.9A patent/CN110768425A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113285537A (en) * | 2020-02-19 | 2021-08-20 | 莱克电气股份有限公司 | Motor and washing machine with low harmonic vibration, low loss and low noise |
| CN113285537B (en) * | 2020-02-19 | 2022-08-05 | 莱克电气股份有限公司 | Motor and washing machine with low harmonic vibration, low loss and low noise |
| CN113839490A (en) * | 2020-06-24 | 2021-12-24 | 莱克电气股份有限公司 | Rotor, efficient low-noise motor and application thereof |
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